Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.
NVIDIA Corporation has today released NVPerfKit, which is a set of tools for debug and profile OpenGL and Direct3D applications. This program does allow access low-level performance counters on NVIDIA GPUs. NVPerfKit has been around for a while, but today's version 2.1 release now supports 32-bit and 64-bit Linux. More on NVIDIA's NVPerfKit can be found on its project page.