---------------------------------------------------------------------- H H PPP CCC UK NATIONAL HPC SERVICE H H P P C C -------------------------- HHHHH PPP C x x EPCC and CCLRC Daresbury H H P C C xx Laboratory are members of H H P CCC x x the HPC-UK partnership ---------------------------------------------------------------------- HPCx User Mailing 115 12 January 2007 ---------------------------------------------------------------------- Contents ** Use of the interactive region ** Course: Using the IBM High Performance Computing Toolkit ** Course: Shared Memory Programming with OpenMP ** NAMD: Version 2.6 now available ** TotalView: Version 8.0.1 now available ---------------------------------------------------------------------- Greetings-- USE OF THE INTERACTIVE REGION The Interactive/Parallel region of HPCx includes 2 nodes; that is, 32 processors. You can find out how to make use of it in the User Guide: http://www.hpcx.ac.uk/support/documentation/UserGuide/HPCxuser/HPCxuser.html - under "Interactive Execution". This region is obviously quite a scarce resource, and at the moment it's busy. I'd like to mention the following points. * The objective of the Interactive/Parallel region is to support development work, especially work using interactive tools like TotalView. It is NOT intended for production work. People who submit streams of non-interactive 1-hour 32-processor jobs are misusing this resource, and taking advantage of the interactive character of the region to get their jobs to the head of the queues. This is unfair. Please use the batch queues for production work. * Although there are 32 processors in the region, you don't have to use them all. The region can be shared. In fact, if you are doing development or debugging work, it's rarely necessary to use all 32 processors. Use the LoadLeveler cpus directive, for example: @# cpus = 5 The number of CPUs doesn't have to be a multiple of 2; it could be 3, for example, or 17. It's better to ask for only as many CPUs as you need, since this leaves the others to be used at the same time by other people. Please don't automatically ask for 32 CPUs, just because they are there. Please observe these guidelines as they will help everyone's work along. ---------------------------------------------------------------------- COURSE: USING THE IBM HIGH PERFORMANCE COMPUTING TOOLKIT (HPCT) EPCC, Edinburgh, 17-18 January 2007 This course will cover the use of the HPCT, which assists users in the performance analysis, and performance debugging of sequential and parallel scientific applications. The HPCT is available on HPCx. THERE ARE STILL SOME PLACES AVAILABLE ON THIS COURSE! Further details: http://www.hpcx.ac.uk/support/training/HPCxHPCT.html Registration form: http://www.hpcx.ac.uk/support/training/form.html ---------------------------------------------------------------------- COURSE: SHARED MEMORY PROGRAMMING WITH OPENMP Queen's University, Belfast, 24-25 January 2007 This course is a comprehensive introduction to OpenMP, the industry standard API for programming shared memory architectures. Further details: http://www.epcc.ed.ac.uk/computing/training/courses/course_summaries/SharedMem$ Registration form: http://www.hpcx.ac.uk/support/training/form.html ---------------------------------------------------------------------- NAMD: VERSION 2.6 NOW AVAILABLE NAMD 2.6 is now available on HPCx. Initial testing by the HPCx support team indicates a significant performance improvement over the previous beta version NAMD 2.6b1. Users previously registered for NAMD access can access the new version. Users so far not registered for NAMD access should contact the helpdesk for access. ---------------------------------------------------------------------- TOTALVIEW: VERSION 8.0.1 NOW AVAILABLE Totalview version 8.0.1 is now available on HPCx. Users should now start serial and parallel Totalview debugging sessions on HPCx by use of the commands 'tv' and 'runtv'. This ensures access to the latest Totalview features. For more information see: http://www.hpcx.ac.uk/support/FAQ/totalview/ ---------------------------------------------------------------------- Regards --John ---------------------------------------------------------------------- HPC-UK partnership: http://www.hpc-uk.ac.uk ---------------------------------------------------------------------- Earlier mailings: http://www.hpcx.ac.uk/support/notices/index.html To be removed from the mailing list: log into your website account, go to the "Update" page, and click the "Opt out of user emails" field; then click "Commit update". -- John Fisher j.fisher@epcc.ed.ac.uk HPCx User Administration and Helpdesk HPCx: http://www.hpcx.ac.uk Helpdesk: support@hpcx.ac.uk Phone: +44 131 650 5029 Fax: +44 131 650 6555