---------------------------------------------------------------------- H H PPP CCC UK NATIONAL HPC SERVICE H H P P C C -------------------------- HHHHH PPP C x x provided by H H P C C xx EPCC and H H P CCC x x CCLRC Daresbury Laboratory ---------------------------------------------------------------------- HPCx User Mailing 031 6 February 2004 ---------------------------------------------------------------------- Contents ** New Technical reports ** Phase 2: progress report ---------------------------------------------------------------------- Greetings-- NEW TECHNICAL REPORTS Two new reports have been placed on the web this year. They are: "Introducing LAPI and Capturing the Performance of its Point-to-Point Communications on HPCx and the Colony SPswitch2", by Christos Kartsaklis "An LPAR-customized MPI_AllToAllV for the Materials Science code CASTEP", by Martin Plummer and Keith Refson You can find links to these on this page: http://www.hpcx.ac.uk/research/hpc/ Although these are primarily written for the current system, work is in hand to apply these techniques to the HPS switch and the rest of the Phase 2 environment. ---------------------------------------------------------------------- MOVING TO PHASE 2 - PROGRESS REPORT We are following the plan I sent round in Mailing 030 on 23 January. At present there are no serious problems. The embryo Phase 2 system now includes 8 32-processor frames. It's being used by HPCx staff for familiarisation and benchmarking, and to prepare the acceptance tests. Current areas of investigation include characterising the low-level performance of the switch and the behaviour of OpenMP jobs running on up to 32 processors. I shall report progress again in a fortnight's time. ---------------------------------------------------------------------- Regards --John ---------------------------------------------------------------------- Earlier mailings: http://www.hpcx.ac.uk/support/notices/index.html -- 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