Application Profiling for ERCAP

From: Francesca Verdier (fverdier_at_lbl.gov)
Date: 06/16/2005


Dear NERSC Project Managers,

ERCAP allocation requests for 2006 will be due September 1, 2005. They
will request application performance data similar to what was requested
last year. The 2006 code performance details are located at:

http://www.nersc.gov/nusers/accounts/allocations/ercap/help/code.html

If you used poe+ to collect this data last year, please be advised that
this utility is no longer available. The upgrade to AIX 5.2 removed a
mechanism upon which poe+ relied. poe+ has been replaced by IPM, the
Integrated Performance Monitoring tool.  To use IPM:

module load ipm

and then run your code as you would normally.

Information on IPM is available at

http://www.nersc.gov/nusers/resources/SP/ipm/

You also have other options. The hpmcount utility works well for serial
codes or code kernels which contain no MPI. PMAPI, HPMLIB and PAPI
provide APIs to programmers to instrument codes by hand.

As always, NERSC staff are available to assist if you encounter problems
or have questions: consult@nersc.gov.

Sincerely,
-- 
Francesca Verdier                   email: fverdier@lbl.gov
Group Lead, NERSC User Services     phone: 510-486-7193

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