Server Gurus Discussions

[yah]

On a dual socket AMD EPYC 7702 64-Core Processor,  how many events can  someone sample at the same time? i'm using 

./AMDuProfCLI-bin. i'm looking at using this program to look at these features:

pmu-events, predefined-events and cacheline-events

thanks,

YAH

[dipak]

Thank you for the query. Moving it to the AMD Server Gurus forum which is the right place to post any query/issue related to AMD uProf.

Thanks.

[santosh_zanjurne]

Hello Yah,

The right way to profile an application using events directly is by using "-e event=eventx".  Know more about this option by -  AMDuProfCLI collect -h. It is suggested that you use fewer events in one profile session - to avoid multiplexing.  Refer chapter 13.2.2 - "Event-Counter Multiplexing" in User_Guide_AMD_uProf_v3.4_GA.

Let me know if you need more information.

Regards,

Santosh

[santosh_zanjurne]

Example custom profile command : 

AMDuProfCLI collect -e event=PMCx043,umask=0x40 -e event=L1_DTLB_MISSES -e event=L2_DTLB_MISSES -e event=PMCx047 -o $PWD/outputdir ./cmd