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markland

Trying to run HPL on markland cluster.

CPUs are E5-2670 which are supposedly ~155GFLOPS per socket. [1] Another source says 330 GFLOPS. [2] Let's be conservative and say 150GF per CPU. Trying one run of xhpl with gotoblas, I get about 26GFLOPS for one socket, or about one sixth of the max theoretical. Clearly not the best BLAS for this CPU.

Links

• run with | mpirun: http://www.rocksclusters.org/rocks-documentation/4.3/running-linpack.html
• generate your HPL.dat: http://www.advancedclustering.com/faq/how-do-i-tune-my-hpldat-file.html
• get the right BLAS for Sandy Bridge: http://software.intel.com/en-us/articles/performance-tools-for-software-developers-hpl-application-note/

references

1. http://forums.anandtech.com/showpost.php?p=33585052&postcount=1
2. http://novatte.com/blog/2012/03/how-to-calculate-theoretical-peak-performance-of-a-cpu-based-hpc-system/