Radeon Open-Source vs. Catalyst With OpenCL CLPEAK
The double-precision float performance reported by clpeak was also similar between the two Linux drivers.
With the exception of the Radeon HD 6870, the transfer bandwidth potential between the two drivers was largely similar for both enqueueWriteBuffer and enqueueReadBuffer. With the HD 6870, the open-source driver's transfer bandwidth performance was significantly lower. The other graphics cards saw small differences in performance for these tests.
Well, here are those results as a response to yesterday's Russian Super-Computing Users Get Tired Of Catalyst, Start Looking At Open-Source AMD article. While these results show great compute performance potential for the open-source code-base, keep in mind that clpeak is a very basic OpenCL micro-benchmark: of only marginally more value to OpenCL testing as glxgears is to OpenGL. Unfortunately, our other OpenCL benchmarks with more complex, real-world OpenCL kernels still are not running on the current open-source OpenCL driver stack. Once they are running, however, will be more interesting OpenCL compute results.
You can explore all of today's test data via this OpenBenchmarking.org result file.
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