---------------------------------------------------------------------- H H PPP CCC UK NATIONAL HPC SERVICE H H P P C C -------------------------- HHHHH PPP C x x Provided by EPCC and H H P C C xx CCLRC Daresbury Laboratory H H P CCC x x ---------------------------------------------------------------------- HPCx User Mailing 118 23 March 2007 ---------------------------------------------------------------------- Contents ** Change in default handling of core files ** HECToR user meeting: 19 April ** Course: Fundamental Concepts of HPC, 24-26 April ** Course: Message-Passing Programming with MPI, 30 April - 2 May ---------------------------------------------------------------------- Greetings-- CHANGE IN DEFAULT HANDLING OF CORE FILES We have recently changed what happens by default when a program running under LoadLeveler tries to do a core dump. In future, no core file will created. This is because the enormous size of core files generated has sometimes caused problems. If you want a core file to be created should your batch job crash, you must include a core_limit line in your jobscript. For example: @# core_limit = 50Mb This will allow a core file to be created, but will ensure that it does not exceed 50 Mb in size. ---------------------------------------------------------------------- HECToR USER MEETING Oxford e-Research Centre, Keble Road, Oxford, 19 April 2007 This meeting is being convened by NAG Ltd, who will be doing the computational science and engineering support for the new HECToR HPC service. All interested in becoming users of the service are welcome to attend. Agenda 10:30 - 11:00 Registration and Coffee 11:00 - 11:10 Welcome and Agenda Jane Nicholson, EPSRC 11:10 - 11:45 Overview of HECToR Arthur Trew, EPCC 11:45 - 12:10 HECToR CSE Mike Dewar, NAG 12:10 - 13:00 Discussion/Questions Ian Reid, NAG (Chair) 13:10 - 13:45 Lunch 13:45 - 14:15 Applying for time on HECToR Jennifer Houghton, EPSRC 14:15 - 14:45 HPCx and HECToR Martyn Guest, CCLRC 14:45 - 15:00 Wrap up Rob Meyer, NAG 15:00 - Tea Location: The meeting will be held at the Oxford e-Research Centre in Keble Road. There will also be a live webcast for those unable to attend - we will mail out the URL for this later. Oxford e-Research Centre: http://www.oerc.ox.ac.uk/ HECToR: http://www.hector.ac.uk NAG: http://www.nag.co.uk To register, please email HECToR.meeting@nag.co.uk. ---------------------------------------------------------------------- COURSE: FUNDAMENTAL CONCEPTS OF HIGH-PERFORMANCE COMPUTING EPCC, Edinburgh, 24-26 April 2007 This course covers the ways that High Performance Computing (HPC) techniques can be used to address problems in Computational Science. After introducing the major scientific applications areas and basic concepts of parallel computing, it outlines the hardware design of modern HPC platforms and the parallel programming models that they support. The principal methods of measuring and characterising serial and parallel performance are then covered. The final section of the course gives an introduction to grid technologies together with an overview of the opportunities and challenges associated with the computational grid. Details: http://www.hpcx.ac.uk/support/training/FundamentalConcepts.html Registration: http://www.hpcx.ac.uk/support/training/form.html ---------------------------------------------------------------------- COURSE: MESSAGE-PASSING PROGRAMMING WITH MPI EPCC, Edinburgh, 30 April - 2 May 2007 Most of the applications on most of the world's supercomputers are parallelised using Message Passing. This course covers all the basic knowledge required to write parallel programs using this programming model, and is directly applicable to almost every parallel computer architecture, including both HPCx and HECToR. The course uses the de facto standard for message passing, the Message Passing Interface (MPI). It covers point-to-point communication, non-blocking operations, derived datatypes, virtual topologies, collective communication, MPI-IO and general design issues. Details: http://www.hpcx.ac.uk/support/training/MPP.html Registration: http://www.hpcx.ac.uk/support/training/form.html ---------------------------------------------------------------------- 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