topic Hello Chandra, in Software Tuning, Performance Optimization & Platform Monitoring

PCM on Windows 10 - PMEM device error

Chandra_V_ — Thu, 01 Mar 2018 10:58:49 GMT

Dear All,

I have compiled the PCM for windows 10 on Visual Studio Community on 64bit - i7 -7th generation laptop. I am trying to measure MEM_LOAD_UOPS_RETIRED_L3_MISS_EVTNR. So, i run the following command.

pcm-core -e cpu/umask=0x20,event=0xD1. Seems working but i getting error

"Failed to seek in the pmem device". and IPC value = -nan(ind). Please refer the attached screen shot. Can not solve this issue last 2 days :) // Am i missing anything? Any suggestion very helpful. Many thanks.

With regards, Chandra

Hello Chandra,

Zhuoran — Mon, 22 Jul 2019 16:53:34 GMT

Hello Chandra,

Did you solve the problem? I am trying to use PCM now and I got the same error as yours. Thank you very much!

Best regards,

The first error says

HadiBrais — Mon, 22 Jul 2019 17:33:02 GMT

The first error says "Starting MSR service failed with error 2," which I think it means that the MSR driver file msr.sys could not be found in the same directory as pcm-core.

Quote:Hadi Brais wrote:

Zhuoran — Mon, 22 Jul 2019 17:42:50 GMT

Hadi Brais wrote:
The first error says "Starting MSR service failed with error 2," which I think it means that the MSR driver file msr.sys could not be found in the same directory as pcm-core.

Yes, because he used the winring driver instead of msr.sys. I did that too. I switched another computer and rebuilt the same .sln. Now the message "failed to seek in pmem" has gone and everything looks fine. I don't understand the reason maybe they have different intel CPUs.

Unsuccessful: i7-7500U

Successful: i5-7440HQ