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1. Note SCD built the lbt files using the L option of flint Users with their own software libraries can also use this technique to build Ibt files and invoke them using the methods described in this article For more information on flint see the flint man page see also the article Powerful new Fortran source code analyzer available in the March 1991 SCD Computing News A detailed source of information is the ZPT User s Manual FORTRAN lint Source Code Analyzer You can order this manual from SCD using the information on the back cover of this newsletter Tom Parker is a consultant in the SCD User Services Section No more GAU charge for connect time on shavano As of August 1 there is no longer a charge for connect time that is the time accrued during an interactive session on the CRAY Y MP8 864 shavano The General Accounting Units GAU formula is G J C 000167 DA t 002A 0019 A 2 0002 ID 0002 IT where G GAUs J Job charge 001 GAUs per job not assessed for interactive jobs C CPU hours used DA Cray disk drive I O activity in megawords t Memory residency time in hours excluding time waiting to execute A Average memory used in megawords ID Mass Storage System MSS disk I O activity in megawords IT MSS tape cartridge I O activity in megawords To account for the charging factor of the job queue used the total charge for shavano job2. SCIENTIFIC COMPUTING DIVISION NATIONAL I AAJ MINNEAPOLIS TO HOST NOV 92 SUPERCOMPUTING CONFERENCE COMPUTERS amp ATMOSPHERIC SCIENCES MEETING HELD IN SANTA FE NEW IMPROVED IRJE FTP FOR INFO ON MSS DATASETS FORTRAN 90 USE VECTOR INTRINSICS AND WHERE CONSTRUCT CONTOUR FROM 1 10 2 8 BY 1 About the cover The cover shows the nitrogen dioxide NO2 distribution at 43 7 millibars calculated for January 7 1992 The distribution was calculated by the new offline chemistry transport model developed by Franck Lef vre Guy Brasseur Ian Folkins Anne Smith and Stacy Walters of NCAR s Atmospheric Chemistry Division This model is currently being used for a real case study of the Arctic lower stratosphere during the 1991 1992 winter The model includes a comprehensive photochemical package allowing a full description of the oxygen nitrogen chlorine and bromine chemistry as well as a rather detailed treatment of the heterogeneous processes on polar stratospheric clouds and aerosols Analyzed winds and temperatures from the European Centre for Medium Range Weather Forecasts and the National Meteorological Center are used respectively to drive the transport of 42 species of stratospheric interest and compute their loss and production frequencies The diurnal variation of NO is clearly visible on this plot with strong longitudinal gradients at the night terminator located in the 60
3. Those of you who use datasets provided by SCD s Data Support Section DSS are encouraged to read Use FTP to obtain information on MSS Novenib r datasets Many DSS files are easily and quickly accessible via File Transfer Protocol FTP over the network and this article gives 16 20 Supercomputing 92 information on how to take advantage of this option Minneapolis Analyze your code with FORTRAN lint 23 SCDUG This month s Hints from the Consultants department discusses a December programming tool that can be of tremendous help in developing and debugging Fortran programs see FORTRAN lint Checking subroutine SCD UNIX Basics Class library calls SCD UNICOS Orientation Class SCDUG For more information about these calendar items send e mail to scdinfo ncar ucar edu 2 SEPTEMBER OCTOBER 1992 Discoveries brought to you by Supercomputing 92 Supercomputing 92 the world s premiere conference on high performance computing will be held November 16 20 1992 at the Minneapolis Convention Center in Minneapolis Minnesota Guided by the theme Voyages of Discovery through Computing Technology this year s conference offers a vast array of current information and numerous opportunities for making new contacts in this rapidly changing field This article offers a brief overview of the various Supercomputing 92 events You can access continuously updated information about th
4. For further information about the education program please contact Ginger Caldwell SC 92 Education Program Chair National Center for Atmospheric Research P O Box 3000 Boulder CO 80307 e mail sc92ed ncar ucar edu fax 303 497 1298 phone 303 497 1229 Awards to recognize top achievers The awards luncheon will feature a panel of speakers that includes John Rollwagen Cray Research and John Armstrong IBM They will discuss the High Performance Computing and Communications Program The following awards will be presented The Forefronts of Large scale Computation Award will be given to an individual or team making a Significant contribution to computational science through the application of interdisciplinary techniques to solve an important scientific problem The Virtual Reality Cave will offer a way for participants to transcend reality The Gordon Bell Prize Lectures will consist of several talks given by the finalists for a monetary prize the prize is awarded for the best speedup of a real parallel processing application running on a real machine a e The Student Paper Award will be given for the best paper and delivery by a student Social events to offer entertainment and new contacts The opening social event in the exhibit hall on Monday November 16 will feature refreshments and live entertainment It will provide an opportunity for attendees to meet exhibitors informally and view d
5. array valued results from intrinsic functions are needed Cray CF77 has full vectorization of most of these functions Appendix B of the Cray Research publication CF77 Compiling System Vol 1 Fortran Reference Manual SR 3071 5 0 contains tables that indicate which functions provide vector valued results The simple case in Example 1 uses a DATA statement to establish values for X Using a whole array assignment statement Y is set to 2 8 times X The next assignment sums the vector values using SIN and COS intrinsics and assigns the result to the vector Z SEPTEMBER OCTOBER 1992 SOFTWARE N EWS Example 1 Vector intrinsic functions R is a vector that is assigned values for the expression ALOG Y 5 The intrinsic ALOG has full vectorization and 5 is broadcast to the number of elements declared for vectors Y and R In Example 2 page 18 the scalar A is set to 23 and its square root is calculated through traditional Fortran MARIGOLDS is a vector of 10 values initialized in a DATA statement BB is the vector of the square roots of the vector AA in a whole array assignment statement using a vector square root AA is assigned floating point values in the assignment of MARIGOLDS a type INTEGER rank 1 array TULIPS is assigned a value from the SIN of the FLOAT function of MARIGOLDS plus the scalar 3 2 which is broadcast to ten elements the number of elements in MARIGOLDS and TULIPS In the last assignm
6. Sato Cecil E Leith Robert Malone John Anderson Roger Wiley Bernie O Lear Matthew Arrott William Schramm Akimasa Sumi Michel Valin Iain Findleton Affiliation Deutsches Klimarechenzentrum GmbH Hamburg Germany Hadley Centre for Climate Prediction and Research United Kingdom Lawrence Livermore National Laboratory NCAR NCAR NCAR Lawrence Livermore National Laboratory Los Alamos National Laboratory University of Wisconsin at Madison Meteorological Office United Kingdom NCAR National Center for Supercomputing Applications University of Illinois National Oceanic and Atmospheric Administration Center for Ocean Analysis and Prediction Monterey University of Tokyo Japan Dorval Quebec Canada Finalists for Computerworld Smithsonian Award honored in Washington D C by Sara Van Dyke Finalists for the Computerworld Smithsonian Award convened in Washington D C on June 8 at a dinner held to honor the winners NCAR representatives Bill Buzbee Bernie O Lear and Dave Kitts along with Cynthia Kruse NCAR s Storage Technology Corporation StorageTek sales representative attended the black tie event held in the National Buildings Museum in downtown Washington Nominees for the Smithsonian Award which is called A Search for New Heroes were judged on the following criteria e How the application benefits its users e The importance of
7. reserved Printed in the United States of America A Software change articles The delta symbol A appears next to the title of articles that may affect how you run your jobs Conventions For a list of conventions used in this news letter see the Documentation department Printed on recycled paper 50 mill waste 10 post consumer waste with soy inks A PRINTED WITH SJ SOY INK SCD Director s Column Supercomputer users welcome at SC 92 11 Discoveries brought to you by Supercomputing 92 Froma heterogeneous computing challenge to Visualization Theater Atmospheric sciences conference well attended in Santa Fe Scientific capability of state of the art climate models is reviewed Finalists for Computerworld Smithsonian Award honored in Washington D C A Search for New Heroes highlights importance of information technology Use FTP to obtain information on MSS datasets Data Support Section catalogs documents and software now more easily accessible 14 16 20 IRJE rebuilt to keep pace with increased use Software is dramatically upgraded interface remains virtually the same Fortran 90 CF77 5 0 make use of vector intrinsic functions A vector intrinsic function has an array argument and is built into Fortran The WHERE construct in Fortran 90 and CF77 6 0 WHERE performs a Selective array assignment using a mask 22 29 29 29 26 27 Hints from th
8. the new DSS File Transfer Protocol FTP area Although copies of these files are still maintained on the Mass Storage System MSS most users will probably find it easier to use anonymous FTP The actual data files will continue to reside on the MSS with the exception of a few small datasets that have been copied to the FTP area which may be retrieved free of charge by any user The Internet name of the DSS FTP area is ncardata ucar edu Internet address 128 117 8 111 At your machine prompt type ftp ncardata ucar edu or ftp 128 117 8 111 The screen displays Connected to huron scd ucar edu 220 huron FTP server SunOS 4 1 ready Name ncardata yourname Type anonymous or ftp at this prompt The screen displays 331 Guest login ok send ident as password Password Type your e mail address as your password When you connect to the DSS FTP area you start in the top level directory There are several useful files in this directory beginning with the README file which briefly describes the various files and subdirectories Other important files are news which lists the most recent updates and new data and pricing which contains a summary of the DSS pricing policy and a list of the free datasets that are directly available via FTP Users with NCAR computing project numbers may use any DSS dataset free of charge The file staff lists the names e mail addresses and locations of the DSS staff each d
9. to an NCAR machine They also us the system to access the Mass Storage System MSS the Text and Graphics System TAGS and the high speed laser printers Like an old car with engine problems the IRJE system was still functioning but straining to keep up with the increased workload Like an old car with engine problems the IRJE system was still functioning but straining to keep up with the increased workload The number of IRJE registered users increased by almost 200 during 1991 and the jobs submitted increased by 2 000 a month By the end of 1991 653 users and 8 383 jobs a month forced IRJE to run at full speed all the time Before the software was rewritten the IRJE computer windom ucar edu would run out of memory disks would become full and sometimes the system would crash from the heavy load And the old system did not have any load controls so every job that came in was processed immediately If many jobs came in simultaneously the resulting traffic jam would cause system failures The challenge for SCD staff was to upgrade IRJE to meet current and future demands but maintain the interface that many users already knew and depended on to get their work done SCD decided to use the NCAR designed MASnet Internet Gateway Server MIGS software to replace the IRJE software while maintaining the familiar IRJE user interface The MIGS software provided several advantages over the old IRJE software e MI
10. 30 SEPTEMBER OCTOBER 1992 Panoramic view of the SCD Computer Room At center are the Cray master consoles and on the left is a small High Performance Parallel Interface HIPPI PS32 switch box Behind the switch box a Liebert air conditioner white and cabinets black in the far background left and center the Mass Storage System The stacked boxes next to the post right rear are Network Systems Corporation adaptors other cabinets house various Cray equipment On the right stands the CRAY Y MP2D castle Photo by Bob Bumpas i SEPTEMBER OCTOBER 1992 31 a Fa f i Trademarks CRAY SSD CRAY Y MP and UNICOS are registered trademarks of Cray Research Inc e CFT CFT77 COS SEGLDR Autotasking and CRAY X MP are trademarks of Cray Research Inc e IBM and RISC System 6000 are registered trademarks of International Business Machines Corp AIX is a trademark of International Business Machines Corp DEC VAX VMS and DECstation are trademarks of Digital Equipment Corp EXABYTE is a registered trademark of Exabyte Corp Macintosh is a trademark of Macintosh Laboratories Inc e X Window System is a trademark of the Massachusetts Institute of Technology PostScript is a registered trademark of Adobe Systems Inc e UNIX is a registered trademark of UNIX System Laboratories Inc e Sun Workstation is a registered trademark of Sun Microsystems Inc Sun SunOS Sun 3 Sun 4 SPARC and SPARCstation ar
11. GS can handle more jobs and still place a much lighter load on the system It also has load control built in e MIGS has been thoroughly tested through years of use by NCAR users e MIGS was designed to provide for future capacity and changes making it possible for the IRJE interface to sit on top of it Road test results Of course any time a major software system is completely rewritten and still kept in service during the rewrite there are going to be a few potholes but for the most part the new IRJE system has been a success The load on the windom computer has dropped dramatically since early May when the most active users were converted to the new system the system no longer runs out of memory or crashes due to heavy load The new disk scrubber Keeps the disks from filling up while still allowing space to retain job 14 SEPTEMBER OCTOBER 1992 SOFTWARE NEWS and output files for a long enough time so SCD staff can troubleshoot any problems users report And finally the new system is easier for SCD to monitor and administer freeing staff to pursue other development projects Latest model of IRJE sports two new features 1 IRJE users now have direct access to the online database that stores their registration information This means no more moving your file with registration information the former ntwkparms file back and forth over the Internet for temporary changes or waiting for the system admi
12. MPUTING NEWS Nonprofit Organization Scientific Computing Division U S POSTAGE PAID National Center for Atmospheric Research Boulder Colorado P O Box 3000 Boulder CO 80307 3000 Permit No 558 pineal ite NCAR LIBRAR Y SERI DIR ALS 2 MESA LAB NCAR MAIL ROOM
13. RAY Y MP8 864 shavano have an extension of bat for batch or qsub qsub will eventually be the standard suffix for these files Sample data files in binary format have an extension of pbin for packed binary Plain ASCII files and directory names have no extensions If the actual data file resides in the FTP area it will be named data if it is an ASCII file or data pbin if it is in packed binary format Other common extensions that you might see include aC C code cesh C shell script exe Executable UNIX file Cosb COS blocked file troff Troff file tex Tex file ps PostScript file Researchers can now identify datasets and use them on shavano with minimal assistance from DSS Two other useful directories Some of the access programs require common utility subroutines for such functions as bit movement or grid interpolation These routines which are used by the access programs for many different datasets are located in the libraries directory Many of these routines are in the standard libraries on shavano so you won t need them unless you are planning to use the data on another machine One more directory that may interest users is the download directory If you would like to use a small dataset on another computer and you don t have access to the MSS DSS staff can move it from the MSS to this directory for you to retrieve via FTP There is a charge for this service Please consult the special
14. W 90W morning and 60E 90E evening sectors Lower amounts of NO can be seen in daylight photodissociation as well as its slow decay during the night conversion to NO3 The abundance of NO3 is effectively zero in the polar night region due to the conversion to NO3 and N2Os and the suppression of nitrogen oxides in the presence of polar stratospheric clouds This plot was created with the Conpack Ezmap and Plotchar utilities of NCAR graphics SCD Computing News welcomes cover graphic submissions Please send your graphic along with a description including SCD facilities or software used to Christine Guzy Mesa Lab or send e mail to guzy ncar ucar edu or call Christine at 303 497 1826 SEPTEMBER OCTOBER 1992 Volume 13 Number 7 SCD Computing News is pub lished monthly by the Scientific Computing Division SCD of the National Center for Atmospheric Research NCAR in Boulder Colorado NCAR is operated by the University Corporation for Atmospheric Research and is sponsored by the National Science Foundation Please submit articles photos graphics and letters to SCD Computing News NCAR SCD P O Box 3000 Boulder CO 80307 3000 Staff Lynda Lester managing editor Nancy Dawson writer editor Christine Guzy production coordinator Jacque Marshall production assistant Juli Rew writer editor Copyright 1992 University Corporation for Atmospheric Research Boulder Colorado All rights
15. ataset has a specialist associated with it so you can look up the contact information for him or her in this file How to get started The place you will probably want to start is the catalogs directory You can access this directory by typing cd catalogs within FTP This directory contains lists of datasets organized in various ways The file dstitles is a list of the DSS reference numbers and titles of all the datasets in the archive similar to the MSS file DSS D CATDS which was described in the August 1991 issue of SCD Computing News Other files in this directory list more information about particular subsets of data for example the file ocean_ds_list contains information about various oceanography datasets DSS has moved many of its catalogs documents and software to the new DSS FTP area Finding out what s available Another useful file in the catalogs directory is keyword This is a list of all the keywords used to identify each dataset followed by a list of datasets and their keywords After you get this file via FTP first identify the keyword of interest and then search for its occurrence in the second part of the file SEPTEMBER OCTOBER 1992 11 Example 1 Excerpt from keyword SST list For example suppose you wanted sea surface temperature data The keyword file contains the line SST SEA SURFACE TEMPERATURE indicating that SST is the keyword associated with sea su
16. ce Room at the NCAR Mesa Lab on the following dates October 7 8 December 2 3 Wednesday Thursday Wednesday Thursday This free two day class introduces you to the basics of UNIX Topics covered include essential UNIX commands UNIX file permissions I O redirection pipes and filters job processing the vi editor UNIX e mail and basic C shell features such as history aliasing simple scripts and shell files UNIX Basics is a popular hands on class and often has a waiting list To increase your chances of getting into the class you want register early To register send e mail to scdinfo ncar ucar edu or call the SCD course enrollment line at 303 497 1225 Note This class or equivalent knowledge of UNIX is a prerequisite for the UNICOS Orientation Class Make the most of UNICOS The UNICOS Orientation Class will be held from 08 30 16 30 Mountain Time in the Damon Room at the NCAR Mesa Lab on Tuesday December 8 The class introduces UNIX UNICOS programming tools and the NCAR computing environment and requires a good understanding of basic UNIX 26 SEPTEMBER OCTOBER 1992 Topics covered include make and makefiles shell scripts NCAR hardware and access methods Mass Storage System commands CFT77 and CF77 library and segldr considerations fmgen the NQS Network Queueing System batch system job accounting graphics facilities and debugging with cdbx Please register in advance by sen
17. d you specify which shavano libraries you want flint to check just as you would on a segldr statement For example if you want flint to check calls to NCAR Graphics and NAG you would specify set Ibtdir usr local lib flint flint fgs myfile f lbtdir ncarg Ibt ibtdir nag Ibt SCD consultant Tom Parker SEPTEMBER OCTOBER 1992 Method 2 Wildcard The wildcard method gives you a convenient way to specify all the lbt libraries by using a wildcard character For example flint fgs myfile f usr local lib flint Ibt Note however that since the approximately 25 software libraries contain some duplicate entries there is the potential that flint may check a different routine than the one intended thou gh this is rarely a problem Method 3 E option This method is the same as the wildcard method except that you specify all the lbt libraries by using the E option The E option tells flint to include all the files specified in usrAocalib flint lbtlist For example flint fgs myfile f E usr local Aib flint btlist Method 4 Configuration file The configuration file method is probably the easiest It is just like the E option method except that you specify options in your flint configuration file rather than on the command line The configuration file allows you to specify frequently used options so you don t have to put them on your flint command line each time Here are the one time st
18. ding e mail to scdinfo ncar ucar edu or calling the SCD course enrollment line at 303 497 1225 SEPTEMBER OCTOBER 1992 This department lists recently released SCD documents which you can order by phone or electronic mail Instructions for obtaining printed copies of SCD documents appear under SCD Documentation Orders on the back cover of this newsletter Instructions for obtaining copies of online documents appear at the end of this department Vendor documentation for the XC editor The XC Editor An XEDIT Simulator Program Version 1 1 August 1992 139 pages is now available This is a complete reprint of the recently revised version of the XC documentation from the product creator Syllabi Inc XC is an XEDIT Style editor written for the UNIX environment and is available on the SCD UNIX front end computer meeker The document covers all the XC commands in alphabetical order Efficiency hints for shavano Hints for Using shavano Efficiently and Reducing Your Charges Version 1 0 August 1992 19 pages contains information on how you can decrease the turnaround time for your CRAY Y MP8 864 shavano jobs and reduce General Accounting Unit GAU charges This collection of recent articles from SCD Computing News shows how to build checkpointing capabilities into your jobs set Network Queueing System NQS limits optimize your I O and drop unneeded jobs before
19. e SCD Consultants FORTRAN lint Checking subroutine library calls Use flint Save your code save your job Systems News No more GAU charge for connect time on shavano Networking and Data Communications News Ownership set properly for NFS cross mounted files Graphics News Latest translator installed line width problem fixed on TAGS IRJE processing of tagsparms keywords has changed Training News Learn the UNIX basics Make the most of UNICOS Documentation Vendor documentation for the XC editor Efficiency hints for shavano Latest charging information How to access the SCD Daily Bulletin Obtain SCD documentation via anonymous FTP Conventions used in this newsletter SCD Calendar Supercomputer users welcome at SC 92 by Bill Buzbee October The IEEE ACM supercomputing conference which is cosponsored by the Institute of Electrical and Electronics Engineers and the Association for Computing Machinery is widely viewed as the premier event in high 1 3 Conference on Parallel and Distributed Com puting and Systems Pittsburgh Super performance computing This year s conference will be in Minneapolis computing Center q November 16 20 Supercomputer users are especially welcome at this event Please see Discoveries brought to you by Supercomputing 92 SCD UNIX Basics Class for further details Prine seta see MSS dataset information available via FTP SCD Users Group SCDUG
20. e conference via anonymous File Transfer Protocol FTP to the computer named ftp ucar edu on the Internet Up to the minute conference information appears in the sc92 directory Get the README file to see how the files in this directory are organized Instructions for using anonymous FTP appear in the Documentation department of this issue Speakers to share the latest information Dr Larry Smarr director of the National Center for Supercomputing Applications will deliver the keynote address He will discuss the application of computational science to a set of fundamental problems in science and engineering known as grand challenges problems with potentially broad economic political or scientific impact SCinet 92 will showcase the latest in supercomputing applications and remote systems The conference will offer 80 contributed papers and eight invited presentations Contributed papers are being selected by a peer review process and cover major areas of high performance computing The invited presentations will be given by experts in their respective fields The program will include nine panels and six minisymposia Panels will provide a forum for conference attendees to hear differing views on issues relating to high performance computing there will be opportunities to interact with the panelists Mini Symposia are sessions that present a concentration of talks focusing on a single theme Birds of a feath
21. e trademarks of Sun Microsystems Inc ANSI is a trademark of American National Standards Institute Inc e Motif is a trademark of Open Software Foundation e FORTRAN lint is a registered trademark of IPT Corp Connection Machine is a registered trademark of Thinking Machines Corp CM 2 and CM S5 are trademarks of Thinking Machines Corp Auspex and NS 5000 are trademarks of Auspex Systems Inc Copyrights NCAR Graphics is copyrighted software of the University Corporation for Atmospheric Research Note Reference to a company or product name does not imply approval or recommendation of that company or product to the exclusion of others Change of address form C Add to mailing list Delete from mailing list Change existing entry Name New address User number Phone number Send to User Information Scientific Computing Division NCAR P O Box 3000 Boulder CO 80307 3000 Or include the above information in e mail addressed to sylvia ncar ucar edu on the Internet SCD SERVICES DIRECTORY Phone Contact 303 E mail General Information SCD Consulting Office Consultant on Duty 497 1278 consulti _ SCD Visitor User Information 497 1225 scdinfo SCD Course Enrollment 497 1225 scdinfo Graphics Software Purchase Information 497 1201 scdinfo Data Communications Networking Marla Meehl 497 1301 marla Research Data Archive Access Data Support 497 1219 datahelp Project a
22. eakers on the agenda gave the conference a decidedly international flavor see Table 1 on page 8 The next Computers and the Atmospheric Sciences conference will be held in Monterey California in the fall of 1993 Sara Van Dyke is a writer editor in the Documentation Group within the SCD User Services Section SEPTEMBER OCTOBER 1992 Table 1 Presentations given at CAS 92 Topic Climate System Modeling and Prediction Climate Modeling Work at the Hadley Centre Using a Unified Coupled Model Climate Model Validation and Intercomparison Toward More Comprehensive Global Change Climate Models NCAR Community Climate Model 2 CCM2 Eulerian and Semi Lagrangian Versions The Implementation of the NCAR CCM2 on the Connection Machine 2 Livermore Model of Parallel Computing An Overview of the Department of Energy s Computer Hardware Advanced Mathematics and Model Physics CHAMMP Program Wisconsin Model Engine Project Real Applications on Parallel Systems MaSSIVE Mass Storage System IV Enterprise Visualization as a Tool for Analysis and Communication Integrated Environmental Data Management Present Status of Atmospheric Circulation Model at the Center for Climate System Research Canadian Experience with Nippon Electric Company Global Modeling and System User Interface speaker Lennart Bengtsson Timothy Johns W Lawrence Gates Warren Washington David Williamson Dick
23. ent use RANF RANGET and RANSET on the Cray to generate random numbers MATMUL and DOT_PRODUCT are available as external functions These functions which are intrinsic in Fortran 90 will be available in a subsequent release of CF77 as intrinsics Jeanne Adams was chair of the American National Standards Institute ANSI committee that developed Fortran 90 and is a past chair of the International Programming Languages Committee of the International SEPTEMBER OCTOBER 1992 SOFTWARE N E WS The WHERE construct in Fortran 90 and CF77 6 0 by Jeanne Adams Editor s note This is the ninth in a series of articles about Fortran 90 features available on version 5 0 of CF77 the Cray compiling system Future articles will discuss new input output facilities and pointers in Fortran 90 and CF77 In addition to the transformational functions see Fortran 90 CF77 5 0 make use of vector intrinsic functions in this issue the 6 0 version of CF77 tentatively scheduled for release in April 1993 will have the WHERE construct as well The WHERE statement and the WHERE construct are referred to as masked array assignment In other words these instructions perform an array assignment selectively Example 1 A simple program using a mask that is only certain elements of one array are assigned to another array based on whether the mask is true or false The mask is a logical array expression The arrays in an assignment state
24. ent statement an array section is used for both TEMPERATURE_NORTH and WEST The section WEST 1 10 2 3 is conformable with has the same shape as TEMPERATURE_NORTH 5 50 5 2 3 In the printout of the array WEST the first row of the second dimension is not involved and happens to be zero The second row of the second dimension is derived from TEMPERATURE_NORTH having been assigned values from BB The third row is Simply the TAN of the value 999 It was initialized as 999 before the assignment of BB to the second row of the second dimension The bit intrinsic functions of Fortran 90 are fully vectorized in Cray Fortran Other intrinsics The bit intrinsic functions of Fortran 90 are fully vectorized in Cray Fortran These were discussed in SEPTEMBER OCTOBER 1992 17 5 SOFTWARE N E W S eo U a NN E L O E Example 2 Vector assignment and intrinsic functions 18 _SEPTEMBER OCTOBER 1992 SOFTWARE NEWS the February issue of SCD Computing News The following intrinsic names take INTEGER arguments IOR IAND NOT IEOR IBSET IBCLR BTEST ISHFT ISHFTC MVBITS and IBITS For example the logical AND IAND 1 3 with arguments 1 and 3 would be Argument Result of 1 3 IAND 1 3 1 1 1 0 1 0 0 0 0 0 0 0 The exclusive OR IEOR 1 3 has the value 2 The inclusive OR IOR 1 3 has the value 3 On the CRAY Y MP8 864 shavano SHIFT SHIFTL and SHIFTR remain from earlier Fortrans and are offe
25. eps to follow 1 In your home directory on shavano create a file named flint cfg that contains these two lines fgs E usr localAib flint lbtlist SEPTEMBER OCTOBER 1992 2 In your login file type setenv IPT_CONFIG HOME Then whenever you use flint it will automatically check any calls to routines in all the software libraries For example flint myfile f You can use flint to check your calls to NCAR Graphics Method 5 Customized With the customized method you create your own list of lbt files If you don t normally use some of the libraries listed in usr local Aib flint Ibilist you can edit that file to remove the libraries you don t want then save the new file in your home directory for instance in my lbtlist You can then then point to this file using any of the previous methods For example using the E option method you would type flint fgs mylib f E HOME my btlist The advantage of the customized method is that it may be more efficient because flint doesn t have to search extra libraries On the other hand if you use different libraries in different programs the customized method may not be worth the effort In conclusion We know you will find this flint subroutine checking capability useful We recommend you use it so flint can check your library calls We will continue to create new lbt files whenever new software libraries are obtained or modified
26. er sessions BOFs will be held at various times throughout the conference and will be scheduled on a space available basis These informal sessions will allow conference attendees to exchange ideas and information on specific topics Expand your knowledge with tutorials and workshops The 18 tutorials will provide broad coverage of popular and important topics that affect supercomputer professionals in a variety of disciplines and at a SEPTEMBER OCTOBER 1992 variety of experience levels see sidebar Because tutorial attendance will be limited by available space or equipment potential attendees are encouraged to preregister registration information appears at the end of this article The eight workshops will offer an informal and often interactive format for participants to explore common interests Highest bandwidth network ever SCinet 92 an innovative scientific network using high speed communications between exhibitors and remote locations will showcase the latest in supercomputing applications and remote systems SCinet 92 will provide a networking environment similar to those envisioned for the future It will be the highest bandwidth network that can be experimentally assembled by leaders in the networking industry Highlights will include e Demonstrations of the technical feasibility of building a networked supercomputing environment using High Performance Parallel Interface HIPPI Fiber Distrib
27. evelopments in high performance computing technology at the industry exhibits Receptions will also be held on Tuesday and Thursday evenings during the poster and video poster exhibits Registration info and other conference facilities it s easy to attend To obtain printed registration forms contact the Supercomputing 92 conference office e mail sc92info ncar ucar edu phone 303 497 1808 and ask for the advance information mailer You may also use the online registration forms available via anonymous FTP to ftp ucar edu Advance registration discounts are available registration forms with payment in full must be postmarked by October 16 1992 International attendees may submit their registration fee by wire transfer Please study all the conditions for registering the information mailer and the anonymous FIP files provide complete details about registration Workstations with Internet access for electronic mail will be provided at the convention center for conference attendees Since these facilities are expected to be oversubscribed we encourage you to bring your own workstation for use in your hotel room if you need extended connect time Twelve hotels will house conference attendees Two of these are within walking distance of the Minneapolis Convention Center Supercomputing 92 will provide shuttle services to and from the convention center for all conference activities Hotel room reservations must be made in wri
28. f each session will allow two or three directors to present their point of view on the topic for the day and the remaining time will include open discussion among all attendees The sessions will be open to all but will be of particular interest to people with management responsibilities at supercomputing _ centers Topics will include massively parallel systems mass storage strategies workstation farms and heterogeneous computing er sasnaceuovauevasusineaes ua TTT Te 2 eee nls nit O aa E b J t gs tess 4 kadie af ar Tilia TIF 2 Manes aoe A rT Me whe Eee o gt ie r PRA Ot j l sa oe PRE K ee 24 Mes vw Supercomputing 92 will be held at the Minneapolis Convention Center a state of the art facility that was completed in December 1990 A unique Skyway System a series of glass enclosed climate controlled second floor walkways connects almost 70 blocks of downtown including many of the hotels chosen to accommodate attendees SEPTEMBER OCTOBER 1992 Education program aims for next generation of computing professionals This year s education program will focus on an introduction to high performance computing for high school and middle school teachers It will include hands on activities and demonstrations as well as presentations by representatives from current high school supercomputing programs Some financial Support is available Secondary and minority educators are encouraged to apply
29. for researchers to display their work allowing attendees to engage in direct in depth technical discussions with the researchers Poster exhibits typically consist of graphics charts and text Video posters will be included this year these exhibits will use video graphics to illustrate the points of the presentation Research exhibits Research exhibits will show a broad range of high performance computing research sansu T bun ul Ti ees i projects They will emphasize interactive and visual displays Visualization Theater The Visualization Theater will present an entertaining mix of presentation quality graphics and interactive visualization in computational science This diverse collection of scientific visualization examples will play on Tuesday and Thursday evenings during the conference The history exhibit will describe the beginnings of the computer industry Virtual Reality Cave The Virtual Reality Cave will offer a way for participants to transcend reality and take a journey never before offered at a supercomputing conference Three dimensional graphics and stirring visualizations promise to transport attendees to a place where the only limit is their imagination Center directors roundtables to offer new ideas for management The morning roundtable sessions will provide a forum for center directors to discuss timely topics dealing with strategic management or operational issues The format o
30. ger checks the value of the MACR or REQ tagsparms keywords for validity Any keywords that IRJE does not recognize will be passed through to the Text and Graphics System TAGS exactly as specified TAGS will perform checking of the validity and values of these new keywords This change has been made because there have been too many recent changes to the TAGS system s keyword set for the IRJE system to keep up For now all tagsparms keywords continue to work as documented in the IRJE UserDoc IRJE Using the NCAR Internet Remote Job Entry System but they do not all work as documented in the TAGS document see the TAGS UserDoc for your access method UNICOS UNIX or MIGS The back cover of this newsletter contains document ordering information There are some differences between what goes in IRJE tagsparms files and for instance what the sendtg command accepts Eventually all keyword processing for TAGS jobs by the IRJE system will be phased out and all tagsparms keywords will be passed through unmodified and unchecked by the IRJE system At that time tagsparms files will have to be changed to match the actual TAGS keywords If you have questions about IRJE processing of tagsparms keywords contact the SCD consultant on duty e mail consult ncar ucar edu phone 303 497 1278 Learn the UNIX basics The SCD UNIX Basics Class will be held from 09 00 15 00 Mountain Time in the Director s Conferen
31. ist for that dataset to verify that the dataset is small enough to be transmitted electronically Call us for help The DSS staff hopes that the NCAR user community finds the new DSS FTP area useful In many cases researchers will now be able to identify datasets for their use and access them on shavano with minimal assistance from the DSS staff We do recommend though that first time users of the archive contact DSS For information on a particular dataset contact the specialist listed in the MASTER file for that dataset for general archive information send e mail to datahelp ncar ucar edu or call DSS at 303 497 1219 Ilana Stern is a member of the SCD Data Support Section SEPTEMBER OCTOBER 1992 SOFTWARE NEWS IRJE rebuilt to keep pace with increased use by Nancy Dawson and Greg Woods The recent overhaul of the Internet Remote Job Entry system IRJE was something like having a new engine put in your favorite aging car that has already seen 150 000 miles of service Although the IRJE software was completely rewritten the outer shell that users see the interface remains virtually the same Over the past year an increasing number of university users have been using IRJE to move jobs to and from the computing resources at NCAR IRJE users submit jobs directly from their local host computers to the NCAR Cray computers and receive the output back on their local computers without ever having to log on
32. loop which will generate SEPTEMBER OCTOBER 1992 element by element sequential assignment The preprocessed code which is then processed by the CF77 compiling system is DO J1X 1 10 TRADE J1X 3 33 IF GROWING J1X NE 0 THEN ELEMENTS J1X 2 GROWING J1X ELSE ELEMENTS J1X TRADE J1X ENDIF END DO In Fortran 90 no order is implied for these elemental Operations in a WHERE statement or construct Assignments may be done in any order or Simultaneously The ordering of elements within the array itself is retained of course The elements of the array do form a sequence subscripts along the first dimension vary most rapidly Jeanne Adams is a member of SCD s Computational Support Group She is being included in the Institute of Electronic Engineers Annals of the History of Computing among those persons who have made a significant contribution to the history and development of computer science 21 FORTRAN lint Checking subroutine library calls by Tom Parker Author s note The following article is a reprint from the June 1991 issue of SCD Computing News with one important update a path name change from usr local src lib flint to usr local lib flint If you are referring to the old pathname for example in your flint configuration file flint cfg you should change to the new pathname The old pathname will become invalid in October 1992 In the March 1991 SCD Computing News
33. ment must be conformable Every assignment in a WHERE construct is executed whether in the WHERE block or in the ELSEWHERE block if there is one Assignments are made based on the evaluation of the mask expression Note that WHERE constructs may not be nested For example a WHERE statement might be WHERE M EQ 0 Y 0 0 using the WHERE construct SEPTEMBER OCTOBER 1992 ER Sa I I ET SOFTWARE N EWS and a simple WHERE construct might be WHERE M LE N Y 2Z ELSE WHERE YS 2 4 2 END WHERE where M N Y and Z are all arrays dimensioned with the same number of elements i e are conformable The expressions M EQ 0 and M LE N generate a logical mask used to selectively assign values to Y In CF77 5 0 you may preprocess the WHERE construct or the WHERE statement in a Fortran preprocessor using the zv or zp options on the cf77 control line The simple program in Example 1 uses a preprocessor for code generation before compilation In this program a comparison is made between GROWING and 0 in a logical or mask expression For elements of GROWING that are not 0 the corresponding elements of ELEMENTS are set to 2 4 that element of GROWING For all other elements that is those that are 0 the value in ELEMENTS is set to the corresponding element of TRADE 3 33 _ The Fortran generated for the WHERE construct in the preprocessor uses the IF THEN ELSE construct of Fortran 77 and a DO
34. mp User Number Assignment Rosemary Mitchell 497 1235 rosemary Computing Resource Applications JoAn Knudson 497 1207 knudson SCD Computing News Editor Lynda Lester 497 1285 lester NCAR Switchboard 497 1000 Networking Information Data Communications Networking Information Network Trouble Reports 24 hour NCAR UCAR Network Work Requests Operations Information 497 1278 consulti 497 1200 opns 497 1310 scdmg Consultant on Duty Operations Supervisor Belinda Housewright Computer Operations Bob Niffenegger 497 1240 niff Machine Room Operations Supervisor 497 1200 opns Graphics Operations Andy Robertson 497 1241 42 andy Tape Librarian Sue Jensen 497 1245 sue Output Mailing Mary Buck 497 1232 docorder Documentation SCD Documentation Information 497 1225 scdinfo SCD Documentation Orders Mary Buck 497 1232 docorder Sending Electronic Mail to NCAR Staff Use the addresses in the e mail column above and the appropriate network information below to send e mail to SCD staff e Internet address mame ncar ucar edu IP node 128 117 64 4 e BITNET users Use the BITNET address name ncario Please consult your system administrator for the exact syntax e SPAN address NSFGW name ncar ucar edu DECNET node 9580 or 9 364 e Telemail OMNET address name ncar ucar edu for the Internet address For further information on e mail please see the UserDoc Using the NCAR E mail System SCD CO
35. nistrator to make a permanent change after you requested it by e mail 2 The new version of IRJE includes another change that users of TAGS will appreciate As additional keywords and parameters are added to TAGS to accommodate the growing list of output devices IRJE will now immediately accept those new values and pass them on to TAGS for processing Under the old IRJE system only a limited set of TAGS output devices were available to IRJE users and there was a delay before each new TAGS device could be added to the IRJE software IRJE users received e mail notices in May and June about these new features and both are documented in the new version of IRJE Using the NCAR Internet Remote Job Entry System For hardcopy see the back cover for ordering information for the online version use the anonymous File Transfer Protocol FTP account on ftp ucar edu _ The pathname is docs networking irje Instructions for using FTP appear in the Documentation department in this issue Signing up to use IRJE If you would like to become an IRJE user your local computer must have the standard TCP IP Transmission Control Protocol Internet Protocol applications of FTP and electronic mail as well as Internet access Your local system administrator can tell you if your local computer meets these requirements If so get a copy of the IRJE registration The IRJE user interface is virtually the same form from the anonym
36. o Fortran For example in DIMENSION TEMP 100 X SIN TEMP X 100 the function SIN with an array argument returns 100 values of the sine of TEMP which in the example are assigned to a corresponding element of X A vector intrinsic function is one that has an array argument and is built into Fortran In version 6 0 of CF77 there will be a number of Fortran 90 array functions The array construction functions are MERGE PACK SPREAD and UNPACK A RESHAPE function will allow the programmer to reshape a rank 1 array to any array of any specified shape up to seven dimensions The CSHIFT EOSHIFT and TRANSPOSE functions shift and transpose the elements of an array A vector function may return an array result or it may return a scalar result reduced from an array an array reduction function The array reduction functions in Fortran 90 are ALL ANY COUNT MAXVAL MINVAL PRODUCT and SUM These functions will also be in the next version of CF77 version 6 0 For example DIMENSION Y 10 X SUM Y sums the 10 elements of Y and assigns the value to the scalar X Fortran 90 and version 5 0 of CF77 have whole array assignment and whole array expressions as well as array section assignment and array section expressions see the April issue of SCD Computing News In order to use the mathematical and conversion intrinsic functions in these expressions and assignment statements using whole arrays
37. ous FTP account on ftp ucar edu The pathname is irje template Fill it out online and mail it back to irje windom ucar edu You will be notified by e mail when your account has been set up If you want to see a filled in example of the template also get the file irje template ex Nancy Dawson is a writer editor in the Documentation Group within the SCD User Services Section Greg Woods is the chief IRJE mechanic and a programmer in the Distributed Services Group within the SCD Distributed Services and Scientific Visualization Section SEPTEMBER OCTOBER 1992 SOFTWARE N EWS Fortran 90 CF77 5 0 make use of vector intrinsic functions ial by Jeanne Adams Editor s note This is the eighth in a series of articles about Fortran 90 features available on version 5 0 of CF77 the Cray compiling system Future articles will discuss new input output facilities and pointers in Fortran 90 and CF77 See also The WHERE construct in Fortran 90 and CF77 in this issue The term intrinsic in Fortran 90 is used to describe facilities that are always defined by the language and available to programmers that is procedures such as Sine and cosine data types such as REAL or INTEGER and operators such as and These facilities are built into Fortran and are called intrinsic procedures intrinsic data types and intrinsic operators A vector intrinsic function is one that has an array argument and is built int
38. ozone depletion This video is available for showing and can be obtained from Susan Cross e mail susan ncar ucar edu phone 303 497 1133 Dave Kitts Cynthia Kruse and Bernie O Lear attended the Computerworld Smithsonian Award ceremony in Washington D C SEPTEMBER OCTOBER 1992 Just being one of the five finalists was a tremendous honor said Bill Buzbee and reflects the inno vation that SCD staff members have incorporated into the MSS We much appreciate encourage ment from Storage Technology Corporation to participate in events such as this I was rather taken back by the idea of attending a black tie event added Dave I found that it wasn t too bad and I was impressed by the quality of projects being honored It s a good feeling when the work the MSS group puts into a project receives national recognition Sara Van Dyke is a writer editor in the Documentation Group within the SCD User Services Section The StorageTek 4400 Automatic Cartridge System referred to locally as the silo because of its distinctive shape is an important part of the MSS because it provides fast and cost effective access to large amounts of data Photo by Bob Bumpas 10 SEPTEMBER OCTOBER 1992 Use FTP to obtain information on MSS datasets by Ilana Stern Over the past several months SCD s Data Support Section DSS has moved many of its catalogs documents and software to
39. red as shifting functions that take REAL and INTEGER arguments They also take Boolean constants and Cray pointers as arguments Note that REAL arguments may be used with AND OR NOT and XOR as a Cray extension to the above Fortran 90 bit intrinsics which are restricted to INTEGER type in the Fortran 90 standard The date and time functions as well as the system Clock are available however the names are different from the ones chosen for Fortran 90 There is a Fortran 90 DATE_AND_TIME intrinsic function with four optional arguments that provide for the Cray functions CLOCK TIMEF DATEF and DATE In Fortran 90 there is a system clock with three arguments that obtain data from the system clock It is called SYSTEM CLOCK and some of its functionality is available with RTC real time clock on the Cray The Fortran 90 random number generation is available using the intrinsic subroutines RANDOM_NUMBER and RANDOM_SEED The subroutine RANDOM_NUMBER returns one pseudo random number a scalar or an array of these numbers depending on whether the argument is scalar or an array from the uniform distribution over the range of 0 to 1 For example in the following code segment DIMENSION X 10 CALL RANDOM_NUMBER X the array X is returned with ten random numbers generated In CF77 6 0 there will be a number of Fortran 90 array functions The same facility is provided on the CRAY Y MP but the names are differ
40. rface temperature data A search through the rest of the file for the keyword SST gives a long list of datasets that contain sea surface temperature data Example 1 shows an excerpt from this list The leftmost item on each line is a dataset reference number You can get more information about any _ particular dataset in a variety of ways Be aware that not all datasets have been entered into the keyword database so there may be additional datasets that meet your needs but are not listed there Given the reference number of a dataset you can obtain its complete title from the file dstitles In your search use a lower case ds in the dataset reference number For example the entries for the first two datasets in this list are ds061 5 NMC B 3 47x51 N Hem Anals daily 1962Mar 1972 ds066 0 NMC 65x65 N Hem Tropo Anals daily 1973 con amp 47x51 by DSS The titles usually indicate the data source in this case it is NMC the National Meteorological Center the period of record the frequency and in the case of gridded data the grid size Browsing through this file may give you ideas about other datasets that might meet your needs Getting information on a particular dataset For more information you should access the datasets directory This directory has a subdirectory for each dataset in the archive All of these subdirectories contain basic information about the datasets some contain documentation data inven
41. s is calculated by applying the charging factor listed in Table 1 of the Charges for SCD Computing Resources UserDoc For document ordering information see the back cover of this newsletter SEPTEMBER OCTOBER 1992 Ownership set properly for NFS cross mounted files In mid July the Mainframe and Server Network MASnet software was fixed to properly set the owner of files disposed from MASnet when the destination directory is Network File System NFS cross mounted Formerly these files would have been owned by user ntwk Latest translator installed line width problem fixed on TAGS Version 3 1 3 of the NCAR Graphics translator ctrans has been installed on the Text and Graphics System TAGS In addition the line width simulation has been fixed for film output This means metafiles with line widths greater than 1 will now be imaged correctly for the QUAL GOOD and QUAL BETTER parameters Previously any line width information was ignored The following new TAGS parameters are available REQ NCGM or REQ CGM only LMIN n Sets minimum line width to n LMAX n Limits maximum line width ton LSCA n Scales all line widths by n If you have any questions about these changes to TAGS please contact the consultant on duty by sending e mail to consult ncar ucar edu or by calling 303 497 1278 20 IRJE processing of tagsparms keywords has changed The Internet Remote Job Entry system IRJE no lon
42. tem IRJE use File Transfer Protocol FTP to access the computer named windom ucar edu Once you have logged on to your account type get dailyb filename where filename is the name you assign to the file on your computer MIGS access If you use the MASnet Internet Gateway Server MIGS from your local computer type nrnet dailyb filename where filename is the name of the local file into which the Daily Bulletin will be returned FTP access The Daily Bulletin is now also available via anonymous FTP in the top level directory with the filename dailyb For directions on how to obtain SCD documentation via anonymous FTP see Obtain SCD documentation via anonymous FTP below If you have questions please contact the SCD consultant on duty by sending e mail to consult1 ncar ucar edu or calling 303 497 1278 S Watch the Daily Bulletin to keep up with timely developments in the Scientific Computing Division SEPTEMBER OCTOBER 1992 tee Obtain SCD documentation via anonymous FTP A growing number of SCD documents are available via anonymous File Transfer Protocol FTP on the computer named ftp ucar edu The User Documentation Catalog which includes descriptions of UNICOS documentation and the yearly indexes of SCD Computing News are also available online The complete list of online documents is in the README file in the docs subdirectory To obtain copies of online documents follo
43. the information technology e The application s originality The application s success in reaching its goals What obstacles were overcome in order to achieve success with the project NCAR s Mass Storage System MSS was nominated in the Environment Energy and Agriculture category by StorageTek a member company of the Chairman s Committee for the Computerworld Smithsonian Awards NCAR was one of five finalists in the category The Wilderness Society of Seattle Washington this year s Environment Energy and Agriculture category winner was recognized for its Endangered Ecosystems Mapping Project The project addresses issues surrounding fragile ecosystems threats to endangered species and the economic costs and benefits of conservation StorageTek s 4400 Automatic Cartridge System referred to locally as the silo is key to the implementation of NCAR s MSS This high speed data retrieval system allows scientists to access more than 400 000 files containing over 25 terabytes of data The SCD developed Local Data Network technology provides fast and cost effective direct access to the huge datasets needed for processing of the large climate models An NCAR produced video Computing Technology and the Environment was developed for the Computerworld Smithsonian Awards program It shows how the MSS helps scientists analyze and respond to global climate change most notably the greenhouse effect and
44. they run 27 Latest charging information The updated Charges for SCD Computing Resources Version 7 2 August 1992 22 pages provides the formulas to compute General Accounting Unit GAU charges for using the computing resources in SCD It contains descriptions of new CRAY Y MP8 864 shavano job queues updates on the maximum memory allowed in the various job queues and instructions for obtaining current online information on subqueues within each queue It contains the charging formulas for use of shavano the Mass Storage System the Text and Graphics System the Xerox 4050 laser printer and the 1 800 connect account This document is also available online via anonymous FTP to ftp ucar edu in the docs other directory under the filename charges gau How to access the SCD Daily Bulletin The Daily Bulletin is an online daily status report of all SCD computing systems It is the most current source of news about computing at NCAR giving information about hardware software documentation communication links and scheduled and unscheduled computer downtime The Daily Bulletin is prepared weekdays by the SCD Consulting Office between 08 45 and 09 00 Mountain Time and again if necessary at 16 00 Interactive access If you log on to the CRAY Y MP8 864 shavano the front end computer meeker or one of the NCAR divisional computers type dailyb IRJE access If you use the Internet Remote Job Entry Sys
45. ting via the postal service mail or fax Housing forms are available in the advance information mailer and via anonymous FTP to ftp ucar edu SEPTEMBER OCTOBER 1992 Atmospheric sciences conference well attended in Santa Fe by Sara Van Dyke The Computing and the Atmospheric Sciences 1992 conference CAS 92 was held in Santa Fe New Mexico from June 28 through July 1 SCD Director Bill Buzbee chaired the program committee as he did for the 1990 conference This year s meeting attended by 63 participants was very successful The conference s purposes were to Review the scientific capability of state of the art climate models Discuss enhancements that will characterize the computational requirements of the next generation of climate models and estimate the computational requirements for these models Review advances in computing technologies and discuss the interaction between these technology advances and future model requirements CAS is the only forum that focuses on the intersection between computing technology and modeling within the atmospheric sciences Bill said The conference enjoys international participation and received high marks this year from all attendees Keynote speaker for the conference was Steven Orszag from Princeton University s Program in Applied and Computational Mathematics Steve discussed Advanced Computational Fluid Dynamics Methods for the Future Other sp
46. tories and or programs to read and decode the data Several even have small subsets of sample data For example suppose you were interested in ds066 0 To return to the top level from the catalogs directory you would type cd Then to get to the subdirectory with information on ds066 0 type cd datasets ds066 0 There are several files in this subdirectory The MASTER file is found in every dataset subdirectory it is the dataset writeup described in a previous article How to get information on the SCD dataset archive SCD Computing News August 1991 As an example the file datasets ds066 0 MASTER in the ncardata ucar edu FTP area is identical to the file DSS D DS0660 on the MSS The MASTER file contains a brief summary of the dataset contents the name of the DSS specialist to contact for help with that dataset and the locations on the MSS of the data files and read programs SEPTEMBER OCTOBER 1992 Conventions we re using Since the DSS has just started transferring information to the FTP area in many cases the MASTER file is the only one in the directory Eventually most dataset subdirectories will contain useful programs and documentation The files in these directories can be identified by their extensions Fortran programs have an extension of f or for for IBM PC compatible Fortran programs such as read f or subs for Files that may contain Fortran code and are ready to be submitted to the C
47. uted Data Interface FDDI Ethernet local fiber T3 and other technologies e Facilities to allow researchers and exhibitors to sho their work and products in operation SEPTEMBER OCTOBER 1992 e A heterogeneous computing challenge with awards to applications running on the network during the conference Exhibits to show the newest ang oldest computing technologies Industry exhibits Industry exhibits will present a comprehensive display of products specific to the supercomputing environment hardware software peripherals workstations industry services publications networking and communications More than 25 exhibitors are expected to give 30 minute _ presentations on their latest developments during the Exhibitor s Forum These industry presentations will not be marketing hype they will be given by computer scientists analysts and engineers who will discuss recent breakthroughs in their areas of expertise History exhibit The history exhibit a first time event at the supercomputing conference will describe the beginnings of the computer industry Highlighting the conference theme Voyages of Discovery through Computing Technology it will depict significant events in high performance computing from the 1950s to the present Displays will include actual hardware modules prototypes and photos of historical computer systems Poster exhibits Poster exhibits will provide an informal setting
48. w the steps below 1 From your local computer connected to the Internet type ftp ftp ucar edu or ftp 128 117 64 4 2 When prompted for a logon name type anonymous Note If your local computer is a Digital Equipment VAX running VMS you may need to type anonymous 3 Enter your logon ID at the password prompt and wait for the ftp gt prompt If you re examining docs for the first time you may obtain a README file with a list of the documentation categories as currently available by typing SEPTEMBER OCTOBER 1992 cd docs get README quit You can read the README file using your Own system tools If you already know the subdirectory you want you can use the dir or Is command within directories to list the contents To transfer a file to your present working directory on your local computer change directories to the desired subdirectory of docs and use the get command For example cd cray get filename where filename is the name of the file you want to transfer Caution If your local computer already has a file with a name identical to the one you want to transfer your existing file will be replaced with the new file To give a file a new name on your local computer type get filename newfilename To terminate the anonymous FTP session type quit A close look at the base of the Y MP2D s I O Subsystem reveals a striking geometric _ pattern Photo by Bob Bumpas
49. we introduced FORTRAN lint a powerful Fortran analysis tool that SCD purchased from Infor mation Processing Techniques FORTRAN lint which is invoked via the flint command on the CRAY Y MP8 864 shavano analyzes Fortran programs and reports on potential problems both within and across routines Consultants and users have used FORTRAN lint to locate Fortran errors in large codes at a savings in debug time to users Now an important new flint capability is available You can use flint to check your calls to subroutines in any of the approximately 25 software libraries on shavano including IMSL NAG SLATEC NCAR Graphics and many others How it works To make this possible SCD built a lbt library file for each software library on shavano When you specify a lbt file along with the g option flint will check your arguments to any routines in that library A lbt filename is in the form usr ocal Aib flint xxx Ibt where xxx generally corresponds to the software library name Exact Ibt filenames are in file usr local lib flint Ibtlist on shavano Note We recommend the fgs options for most flint runs The g option checks arguments f requests FYI s about your code helpful in cleaning up code and avoiding potential problems and s requests a summary of the analysis The following are several methods you can use to check your library subroutine calls Method 1 Actual filenames Using the first metho
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