PBLASParallel Basic Linear Algebra Subprograms
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On the CM-5 we used the gen_matrix_mult routine present in the Connection Machine Scientific Software Library, and on the Paragon we used the psgemm routine from Parallel BLAS (PBLAS).
For matrix sizes between n = 512 and n = 896, the BPRAM matrix multiply even slightly (by at most 7%) outperforms the PBLAS subroutine sgemm.
1979], particularly the Level 2 and 3 BLAS for computational efficiency, and ScaLAPACK relies upon the BLACS [Dongarra and Whaley 1995] for efficiency of communication and uses a set of parallel BLAS, the PBLAS [Choi et al.