root / man / man3 / HPL_pdtest.3 @ 1
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| 1 | 1 | equemene | .TH HPL_pdtest 3 "September 10, 2008" "HPL 2.0" "HPL Library Functions" |
|---|---|---|---|
| 2 | 1 | equemene | .SH NAME |
| 3 | 1 | equemene | HPL_pdtest \- Perform one test. |
| 4 | 1 | equemene | .SH SYNOPSIS |
| 5 | 1 | equemene | \fB\&#include "hpl.h"\fR |
| 6 | 1 | equemene | |
| 7 | 1 | equemene | \fB\&void\fR |
| 8 | 1 | equemene | \fB\&HPL_pdtest(\fR |
| 9 | 1 | equemene | \fB\&HPL_T_test *\fR |
| 10 | 1 | equemene | \fI\&TEST\fR, |
| 11 | 1 | equemene | \fB\&HPL_T_grid *\fR |
| 12 | 1 | equemene | \fI\&GRID\fR, |
| 13 | 1 | equemene | \fB\&HPL_T_palg *\fR |
| 14 | 1 | equemene | \fI\&ALGO\fR, |
| 15 | 1 | equemene | \fB\&const int\fR |
| 16 | 1 | equemene | \fI\&N\fR, |
| 17 | 1 | equemene | \fB\&const int\fR |
| 18 | 1 | equemene | \fI\&NB\fR |
| 19 | 1 | equemene | \fB\&);\fR |
| 20 | 1 | equemene | .SH DESCRIPTION |
| 21 | 1 | equemene | \fB\&HPL_pdtest\fR |
| 22 | 1 | equemene | performs one test given a set of parameters such as the |
| 23 | 1 | equemene | process grid, the problem size, the distribution blocking factor ... |
| 24 | 1 | equemene | This function generates the data, calls and times the linear system |
| 25 | 1 | equemene | solver, checks the accuracy of the obtained vector solution and |
| 26 | 1 | equemene | writes this information to the file pointed to by TEST->outfp. |
| 27 | 1 | equemene | .SH ARGUMENTS |
| 28 | 1 | equemene | .TP 8 |
| 29 | 1 | equemene | TEST (global input) HPL_T_test * |
| 30 | 1 | equemene | On entry, TEST points to a testing data structure: outfp |
| 31 | 1 | equemene | specifies the output file where the results will be printed. |
| 32 | 1 | equemene | It is only defined and used by the process 0 of the grid. |
| 33 | 1 | equemene | thrsh specifies the threshhold value for the test ratio. |
| 34 | 1 | equemene | Concretely, a test is declared "PASSED" if and only if the |
| 35 | 1 | equemene | following inequality is satisfied: |
| 36 | 1 | equemene | ||Ax-b||_oo / ( epsil * |
| 37 | 1 | equemene | ( || x ||_oo * || A ||_oo + || b ||_oo ) * |
| 38 | 1 | equemene | N ) < thrsh. |
| 39 | 1 | equemene | epsil is the relative machine precision of the distributed |
| 40 | 1 | equemene | computer. Finally the test counters, kfail, kpass, kskip and |
| 41 | 1 | equemene | ktest are updated as follows: if the test passes, kpass is |
| 42 | 1 | equemene | incremented by one; if the test fails, kfail is incremented |
| 43 | 1 | equemene | by one; if the test is skipped, kskip is incremented by one. |
| 44 | 1 | equemene | ktest is left unchanged. |
| 45 | 1 | equemene | .TP 8 |
| 46 | 1 | equemene | GRID (local input) HPL_T_grid * |
| 47 | 1 | equemene | On entry, GRID points to the data structure containing the |
| 48 | 1 | equemene | process grid information. |
| 49 | 1 | equemene | .TP 8 |
| 50 | 1 | equemene | ALGO (global input) HPL_T_palg * |
| 51 | 1 | equemene | On entry, ALGO points to the data structure containing the |
| 52 | 1 | equemene | algorithmic parameters to be used for this test. |
| 53 | 1 | equemene | .TP 8 |
| 54 | 1 | equemene | N (global input) const int |
| 55 | 1 | equemene | On entry, N specifies the order of the coefficient matrix A. |
| 56 | 1 | equemene | N must be at least zero. |
| 57 | 1 | equemene | .TP 8 |
| 58 | 1 | equemene | NB (global input) const int |
| 59 | 1 | equemene | On entry, NB specifies the blocking factor used to partition |
| 60 | 1 | equemene | and distribute the matrix A. NB must be larger than one. |
| 61 | 1 | equemene | .SH SEE ALSO |
| 62 | 1 | equemene | .BR HPL_pddriver \ (3), |
| 63 | 1 | equemene | .BR HPL_pdinfo \ (3). |