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Gwinel / likwid

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Refine and validate Groups in perfCtr #5

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
The performance groups in perfCtr are not validated.
This is especially true for Intel Nehalem.

Solution:

Validate the existing groups with the implemented events.
Think about new metrics for performance groups.

Original issue reported on code.google.com by jan.trei...@gmail.com on 28 Sep 2009 at 8:24

GoogleCodeExporter commented 9 years ago 
A paper on the topic was taken as input:

Basic Performance Measurements for AMD Athlon™ 64,
AMD Opteron™ and AMD Phenom™ Processors by Paul J. Drongowski.

The event groups described there were as far as possible configured for the 
core Processor architectures (Intel Nehalem, Core2, K8, K10).

This covers especially the Cache miss rate and ratios which give a good metric 
on cache reuse and locality and are also employed by craypat.

The groups were tested with likwid-bench on plausibility.

Original comment by jan.trei...@gmail.com on 6 Jul 2010 at 11:18