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

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HPCx User Mailing 106                                   6 October 2006
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Contents

**  Start of Phase 3

**  DEISA Training Session in Jülich, Germany


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Greetings--


We are very happy to announce that as from the end of the maintenance
session on Wednesday 11 Oct, we have been running Phase 3 of HPCx.

At present, Phase 3 is not officially in service.  We have to run
benchmarks, and after that, there is a reliability trial, during which
the system must run for a set period of time without incident.  In the
mean time, the system is available for use, although problems may
happen during this interim period.

We have moved to Phase 3 simply by the addition of more CPUs.  These
have been divided into regions, as before:

                                       Phase 2A   Phase 3
Capability region (Jobs >= 256 CPUs):    1024      1536
Capacity region (other jobs):             416       800
Interactive/parallel region:               32        32
Total:                                   1472      2368

Reserved development region:              192       192

TOTAL:                                   1664      2560

At present, the queue structure is the same as before.  Your existing
jobscripts should work without change.

The new system will deliver a minimum of 12 Tflops, that is, 12,000
AUs an hour.  The Capability region is large enough to run a
512-processor job (or two 256-processor jobs) at the same time as a
1024-processor job - this will make the batch system run more
smoothly.  The increase in the Capacity region, which has been very
busy recently, should be very helpful.


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DEISA TRAINING SESSION IN JÜLICH, GERMANY

The 2nd DEISA training session will be held at Forschungszentrum
Jülich GmbH, in Jülich, Germany, on October 23rd - 25th, 2006.

The training will give a global introduction to the usage of the
DEISA infrastructure and discuss the topic of performance and
portability.

DEISA will refund all reasonable expenses.

For more information and registration, please visit
http://www.deisa.eu/news_events/deisa_events/juelich_training.php