Nouveau Lands MP Performance Counters For The GK110
Written by Michael Larabel in Nouveau on 12 March 2016 at 07:47 AM EST. Add A Comment
Samuel Pitoiset has been continuing in his performance counters / compute support quest for the Nouveau open-source NVIDIA driver. Samuel's latest accomplishment is landing MP performance counters for the GK110 GPUs.

Now within Mesa Git is MP performance counter support for the GK110, a.k.a. the GeForce GTX 780, Titan, K20, etc. The support landed here and while it's in place, it's currently not enabled by default: you must set the NVF0_COMPUTE=1 environment variable for enabling this experimental feature.

However, once enabled, you can take advantage of the exposed performance counters via the Gallium HUD, GL_AMD_performance_monitor OpenGL extension, etc. This support comes months after Pitoiset added this support to Fermi GPUs and some support for NV50. He also did some restructuring this week of the Nouveau NVC0 MP counters / driver metrics code and other improvements.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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