gpu_perfmon_set

GPU PerfMon Set

Overview

This sample utility allows to tune Intel(R) Processor Graphics execution unit (EU) performance monitoring register to collect hardware events of some type.

The utility has a single parameter that contains the value one would like to set for events collection. Actual values are described in Programmer's Reference Manual for Intel(R) Processor Graphics, Volume 14: Observability, e.g.:

./gpu_perfmon_set 5 # EU Stall Collection

On start the utility will configure the driver, and GPU will collect desired events until user press ENTER button. Expected output should be the following:

Configuration with the given GUID is already added
GPU PefMon configuration is completed
Press ENTER to deconfigure the driver...

To read the collected values for the event one should use binary instrumentation techniques or inline assembly.

Supported OS

• Linux

Prerequisites

• CMake (version 3.12 and above)
• Git (version 1.8 and above)
• Python (version 2.7 and above)
• libdrm

Build and Run

Linux

Run the following commands to build the sample:

cd <pti>/samples/gpu_perfmon_set
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
make

Use this command line to run the utility:

./gpu_perfmon_set <perf_mon_reg_value>