02d428b109
- needs an MPI implementation (mpich and lam are supported by this port) - needs an Basic Linear Algebra Subprograms implementation like atlas (default) or blas (both are supported by this port) tested on alpha (5), amd64 (5) and i386 (4 and 5)
21 lines
1.3 KiB
Text
21 lines
1.3 KiB
Text
HPL is a software package that solves a (random) dense linear system in double
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precision (64 bits) arithmetic on distributed-memory computers. It can thus be
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regarded as aportable as well as freely available implementation of the High
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Performance Computing Linpack Benchmark.
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The algorithm used by HPL can be summarized by the following keywords:
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Two-dimensional block-cyclic data distribution - Right-looking variant of the
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LU factorization with row partial pivoting featuring multiple look-ahead
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depths - Recursive panel factorization with pivot search and column broadcast
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combined - Various virtual panel broadcast topologies - bandwidth reducing
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swap-broadcast algorithm - backward substitution with look-ahead of depth 1.
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The HPL package provides a testing and timing program to quantify the accuracy
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of the obtained solution as well as the time it took to compute it. The best
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performance achievable by this software on your system depends on a large
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variety of factors. Nonetheless, with some restrictive assumptions on the
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interconnection network, the algorithm described here and its attached
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implementation are scalable in the sense that their parallel efficiency is
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maintained constant with respect to the per processor memory usage.
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WWW: http://www.netlib.org/benchmark/hpl/
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