Extending OmniXXX to profile/trace EPYC CPUs

[drmichaelt7777]

Hello,

The functionality provided by the omniXXX packages could be extended to provide similar performance information on AMD EPYC CPUS. We are lacking tools to produce Roofline curves for EPYC DRAM/L3/L2/L1 curves. Although floating point (SP/DP) can be obtained with other synthetic benchmarks, cache hierarchy BW and latencies require specialized low-level instructions.

I am suggesting the omni tools to be extended to provide such information about the various AMD EPYC CPUs as well.

U can incorporate this functionality to AMDuProf or at least add L3 BWs (and latency) profiles.

thank you
Michael Thomadakis

[jrmadsen]

Omnitrace already has the capabilities to generate the roofline curves and collect the data. What's required is getting omniperf to read the output from omnitrace