root / man / man3 / HPL_pdmatgen.3 @ 1
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.TH HPL_pdmatgen 3 "September 10, 2008" "HPL 2.0" "HPL Library Functions" |
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.SH NAME |
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HPL_pdmatgen \- Parallel random matrix generator. |
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.SH SYNOPSIS |
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\fB\&#include "hpl.h"\fR |
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|
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\fB\&void\fR |
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\fB\&HPL_pdmatgen(\fR |
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\fB\&const HPL_T_grid *\fR |
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\fI\&GRID\fR, |
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\fB\&const int\fR |
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\fI\&M\fR, |
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\fB\&const int\fR |
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\fI\&N\fR, |
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\fB\&const int\fR |
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\fI\&NB\fR, |
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\fB\&double *\fR |
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\fI\&A\fR, |
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\fB\&const int\fR |
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\fI\&LDA\fR, |
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\fB\&const int\fR |
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\fI\&ISEED\fR |
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\fB\&);\fR |
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.SH DESCRIPTION |
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\fB\&HPL_pdmatgen\fR |
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generates (or regenerates) a parallel random matrix A. |
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|
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The pseudo-random generator uses the linear congruential algorithm: |
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X(n+1) = (a * X(n) + c) mod m as described in the Art of Computer |
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Programming, Knuth 1973, Vol. 2. |
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.SH ARGUMENTS |
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.TP 8 |
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GRID (local input) const HPL_T_grid * |
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On entry, GRID points to the data structure containing the |
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process grid information. |
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.TP 8 |
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M (global input) const int |
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On entry, M specifies the number of rows of the matrix A. |
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M must be at least zero. |
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.TP 8 |
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N (global input) const int |
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On entry, N specifies the number of columns of the matrix A. |
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N must be at least zero. |
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.TP 8 |
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NB (global input) const int |
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On entry, NB specifies the blocking factor used to partition |
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and distribute the matrix A. NB must be larger than one. |
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.TP 8 |
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A (local output) double * |
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On entry, A points to an array of dimension (LDA,LocQ(N)). |
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On exit, this array contains the coefficients of the randomly |
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generated matrix. |
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.TP 8 |
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LDA (local input) const int |
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On entry, LDA specifies the leading dimension of the array A. |
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LDA must be at least max(1,LocP(M)). |
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.TP 8 |
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ISEED (global input) const int |
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On entry, ISEED specifies the seed number to generate the |
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matrix A. ISEED must be at least zero. |
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.SH SEE ALSO |
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.BR HPL_ladd \ (3), |
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.BR HPL_lmul \ (3), |
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.BR HPL_setran \ (3), |
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.BR HPL_xjumpm \ (3), |
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.BR HPL_jumpit \ (3), |
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.BR HPL_drand \ (3). |