Compute Code For AMD Cayman Lands In Mesa
Written by Michael Larabel in AMD on 7 June 2012 at 07:18 AM EDT. 11 Comments
AMD
Compute (OpenCL) support for the AMD Radeon HD 6900 "Cayman" graphics cards has now landed in Mesa Git master.

Last week I wrote that compute support for AMD Evergreen (Radeon HD 5000 series) had landed and the latest Mesa Git commits from Wednesday afternoon now provide the "Cayman" support.

When you pair this latest code with a Radeon HD 6900 series graphics card, the OpenCL Clover Gallium3D state tracker (also in Mesa Git master now), LLVM 3.1, libclc, and build it all correctly, it should be possible to get basic OpenCL/GPGPU demos running off an open-source driver stack. It's still not quite a pleasant "out of the box" experience for end-users, but we're moving closer to open-source OpenCL support under Linux becoming viable.

It's been an active target for a long while -- the Clover state tracker has been talked about on Phoronix since summer of 2009 -- while three years later all of the pieces are finally coming together.

The commit that does the Cayman compute magic is 0c4b19, which will be part of Mesa 8.1.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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