topic No Call Stack Information on MIC in Software Archive

No Call Stack Information on MIC

Bryan_H_2 — Sun, 19 Jul 2015 12:19:17 GMT

Hi, there.

Our team is trying to conduct hotspots analysis on MIC from host. However, after we open the result with Vtune 2015, it got no call stack information both in Bottom Up and Top Down taps.

Would you please help us out here?

Many thanks,

Bryan

I am not familiar with this

Kevin_D_Intel — Mon, 20 Jul 2015 12:21:39 GMT

I am not familiar with this so I inquired with others for advice. From what I read, VTune 2015 should support the call stack information.

While I await help, a few questions:

Is your application running native on the Xeon Phi™ or using host execution plus offload?
Have the binary/symbol search paths been setup accordingly (per: https://software.intel.com/en-us/node/529790) ?
Are you using the -knob options discussed in Event-based sampling with Call stack for Intel® Xeon Phi™ is coming in VTune™ Amplifier XE 2015

Hello,

Dmitry_P_Intel1 — Mon, 20 Jul 2015 20:05:30 GMT

Hello,

VTune stack sampling collection on Xeon Phi works only for native application launch so the command line should be something like:

>amplxe-cl -target-system=mic-native -collect advanced-hotspots -knob collection-detail=stack-sampling <path_to_my_app_on_the_card>

It is available only for Linux host.

Thanks & Regards, Dmitry