HPL performance on MIC

HPL performance on MIC

The HPL benchmark performance obtained on a host + 2 MIC cards is coming only 719GFlops. The Host system has 128 GB memory. The theoretical peak is 1.2TF + 1.2TF + 460GFLOPS = 2.8TF. Efficiency is just 35%(~). May I know how to optimize the hpl performance? I've used the OFFLOAD execution, with the executable xhpl_offload_intel64(manually compiled from source of Intel linpack 11.1.1)

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try use another  floating point models and use huge pages , which should increase ur performance as well , thats a factor of 2 or 3 if u use both. It also depends on the problem u just want to compute, do u have many memor acceses ?.

best regards

Markus Gruber

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