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| Subject: |
Bassi status, IPM is available, Performance toolkit installed |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-05-24 14:21:05 |
|
Dear NERSC Users,
Bassi is up and running AIX 5.3 with the NERSC benchmark codes
achieving performance
very similar to that measured under AIX 5.2. Over the last few days,
node b0408 was found
to have degraded memory bandwidth and removed from the system, and GPFS
was tuned to restore
pre-migration performance in /scratch.
* IPM PERFORMANCE UTILITY
The NERSC IPM performance utility is available again on Bassi. IPM was
recompiled under AIX
5.3 to fix hangs in MPI_init reported by some users.
* IBM HIGH PERFORMANCE COMPUTING TOOLKIT (IHPCT)
The IBM High Performance Computing Toolkit has been installed on Bassi
in the "ihpct" module. The software is installed "as-is" as provided by
IBM.
Please report problems with the software to consult@nersc.gov.
From the README file:
-------------------------------------------------------------------------
The IBM High Performance Computing Toolkit is a collection of tools
and libraries which make it easy to collect performance
data from a program. It provides libraries to to gather
data from programs parallelized with OpenMP, SHMEM and
MPI. It allows you to collect data from the hardware
performance counters too. With SiGMA a tool is provided
which is able to show the utilisation of the memory with
a very fine granularity. The PeekPerf GUI is able to show
the collected data within one window.
-----------------------------------------------------------------------
After loading the module, you can use "hpmcount -l" and "hpmcount -c" to
see all the POWER5
counters, events, and groups.
See the following website for more information:
http://www.research.ibm.com/actc/
Regards,
Richard Gerber
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