インテル® VTune™ Amplifier 2018 ヘルプ
Intel® VTune™ Amplifier may not collect the GPU usage data in the following cases:
Intel Media Server Studio driver is not installed properly, so the kernel patching is not applied.
GPU analysis is run without root privileges.
Intel Graphics driver is not signed properly.
Linux kernel is configured with the CONFIG_FTRACE option disabled.
Depending on the root cause, which is typically identified by the VTune Amplifier and described in a warning message, consider one of the following workarounds:
Make sure to install the Intel Media Server Studio (starting with version 2015 R5) and build the kernel driver as described in the Getting Started Guide.
Since GPU analysis relies on the Ftrace* technology, you need to follow one of the following requirements:
Run GPU analysis with root privileges (recommended).
Use the prepare_debugfs.sh script that sets read/write permissions to debugFS.
If you use a customized kernel, make sure it is configured with the CONFIG_FTRACE option enabled.