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05/04/2006
NEW IBM POWER 5 NODES AVAILABLE
 Since Monday May 8 2006 the new IBM Power 5 HPC cluster is available. The cluster is based upon 21 8-way p5 575 systems, interconnected by a High Performance Switch.
Transition from Power 4 to Power 5 should not cause any problem, however we recommend users to recompile their own codes.
The new cluster front-end is pwr503: it is accessible for interactive login by ssh to man.caspur.it.
Starting from the same date, batch job submission on Power 4 nodes is disabled. The cluster is available for interactive login during the next week (monday 05-15-06). Its front-end is reachable by ssh to pwr4s0.caspur.it. Users are kindly requested to remove their files stored in local scratch areas, backing them up on Power 5 cluster or NFS areas.
The cluster is organized as follows:
| Hostname |
RAM(GB) |
Role |
| man (pwr503) |
32 |
Interactive front-end, serial batch |
| pwr501,pwr521 |
16 |
GPFS server, test jobs parallel batch |
| pwr504,pwr510,pwr511 |
32 |
parallel batch |
| remaining nodes (pwr502-pwr520) |
16 |
parallel batch |
A shared storage area of about 11 TB size is available through GPFS.
System Software: IBM AIX 5.2 TL8 SP1, IBM Fortran 9.1 C/C++ 7.0 Compilers, POE 4.2, ESSL 4.2, PESSL 3.2, LoadLeveler 3.3, GPFS 2.3.
The batch queue system is SGEEE 5.3p3. The following computing environments are available:
| mp |
for message passing jobs |
| sm, smlarge |
for shared memory jobs |
| serial |
for serial jobs |
| test |
for test message passing jobs |
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