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IRIX 6.2 Development Libraries
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SGI IRIX 6.2 Development Libraries.iso
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complib.idb
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solvers.z
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solvers
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1996-03-14
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67 lines
SSSSOOOOLLLLVVVVEEEERRRRSSSS((((3333FFFF)))) SSSSOOOOLLLLVVVVEEEERRRRSSSS((((3333FFFF))))
NNNNAAAAMMMMEEEE
SOLVERS - SGI developed linear equations solvers.
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
Two direct solvers for specific sparse symmetric linear systems of
equations are available in complib.sgimath, PSLDLT and PSKYSL. These
solvers are optimized and parallelized for the SGI R8000 platforms. For
direct solvers for dense linear systems of equations, see LAPACK manpage.
PSLDLT solves sparse symmetric linear systems of the form
Ax = b
where A is an n x n symmetric input matrix, b is an input vector of
length n, and x is an unknown vector of length n. PSLDLT uses a direct
method: A is factored into the form
A = L D L-transpose
where L is a lower triangular matrix with unit diagonal and D is a
diagonal matrix.
This routine is double precision only and is available in the mp versions
of complib.sgimath.
See the manpage for PSLDLT for details.
PSKYSL solves skyline, or profile, symmetric linear systems of the form
Ax = b
where A is an n x n symmetric input matrix stored in either the Jenning's
profile format or the reverse Jenning's profile format. b is an input
vector of length n, and x is an unknown vector of length n. PSKYSL uses
a direct method: A is factored into the form A = L D L-transpose where L
is a lower triangular matrix with unit diagonal and D is a diagonal
matrix.
See the manpage for PSKYSL for details.
PPPPaaaaggggeeee 1111