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ScaLA PACK Evaluation and Performance at the DoD MSRCs

ScaLA PACK Evaluation and Performance at the DoD MSRCs

terry_zhang
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This report presents performance results for a subset of ScaLAPACK driver routines and PBLAS routines on the Cray T3E, IBM SP, SGI Origin 2000, and SGI Power Challenge Array platforms at the Department of Defense (DoD) CEWES, ARL, and ASC Ma jor Shared Resource Centers (MSRCs). Performance is analyzed using SGI MPI v3.0 versus MPICH version 1.1.0 on the SGI platforms, and MPI versus shmem on the Cray T3E. On the Cray T3E, correctness of the version of ScaLAPACK included in LIBSCI is tested, and performance timings are compared against the freely available version of ScaLAPACK on netlib using the MPIBLACS. On the IBM SP, correctness of the version of ScaLAPACK included in PESSL is tested, and performance timings are compared against the freely available version of ScaLAPACK on netlib using the MPIBLACS. On the SGI platforms, ScaLAPACK performance using distributed memory BLAS (PBLAS) is compared to LAPACK performance using the multi-threaded MP BLAS.
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