/[escript]/trunk/paso/src/MKL.c
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Contents of /trunk/paso/src/MKL.c

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Revision 2479 - (show annotations)
Thu Jun 18 06:50:37 2009 UTC (10 years, 3 months ago) by gross
File MIME type: text/plain
File size: 6724 byte(s)
paso returns now some diagnostics. SCSL has been removed.

1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2008 by University of Queensland
5 * Earth Systems Science Computational Center (ESSCC)
6 * http://www.uq.edu.au/esscc
7 *
8 * Primary Business: Queensland, Australia
9 * Licensed under the Open Software License version 3.0
10 * http://www.opensource.org/licenses/osl-3.0.php
11 *
12 *******************************************************/
13
14
15 /**************************************************************/
16
17 /* Paso: interface to the Intel MKL library */
18
19 /**************************************************************/
20
21 /* Copyrights by ACcESS Australia 2006 */
22 /* Author: gross@@access.edu.au */
23
24 /**************************************************************/
25
26 #include "Paso.h"
27 #include "MKL.h"
28 #ifdef _OPENMP
29 #include <omp.h>
30 #endif
31
32
33 /**************************************************************/
34
35 /* free any extra stuff possibly used by the MKL library */
36
37 void Paso_MKL_free(Paso_SystemMatrix* A) {
38 #ifdef MKL
39 index_t i;
40 if (A->solver!=NULL) {
41 _INTEGER_t mtype = MKL_MTYPE_UNSYM;
42 if (A->type & MATRIX_FORMAT_SYM) mtype=MKL_MTYPE_SYM;
43 _INTEGER_t n = A->mainBlock->numRows;
44 _INTEGER_t maxfct=1; /* number of factorizations on the same pattern */
45 _INTEGER_t mnum =1; /* factoriztion to be handeled in this call */
46 _INTEGER_t msglvl=0; /* message level */
47 _INTEGER_t nrhs=1; /* number of right hand sides */
48 _INTEGER_t idum; /* dummy integer */
49 _DOUBLE_PRECISION_t ddum; /* dummy float */
50 _INTEGER_t error=MKL_ERROR_NO; /* error code */
51 _INTEGER_t iparm[64]; /* parameters */
52 for (i=0;i<64;++i) iparm[i]=0;
53
54 _INTEGER_t phase = MKL_PHASE_RELEASE_MEMORY;
55 PARDISO ((_MKL_DSS_HANDLE_t *)(A->solver), &maxfct, &mnum, &mtype, &phase,
56 &n, A->mainBlock->val, A->mainBlock->pattern->ptr, A->mainBlock->pattern->index, &idum, &nrhs,
57 iparm, &msglvl,&ddum, &ddum, &error);
58 MEMFREE(A->solver);
59 if (error != MKL_ERROR_NO) Paso_setError(TYPE_ERROR,"memory release in paradiso library failed.");
60 }
61 #endif
62 }
63 /* call the solver: */
64
65 void Paso_MKL(Paso_SystemMatrix* A,
66 double* out,
67 double* in,
68 Paso_Options* options,
69 Paso_Performance* pp) {
70 #ifdef MKL
71 double time0, time1;
72 index_t i;
73
74 if (! (A->type & (MATRIX_FORMAT_OFFSET1 + MATRIX_FORMAT_BLK1)) ) {
75 Paso_setError(TYPE_ERROR,"Paso_MKL: MKL requires CSR format with index offset 1 and block size 1.");
76 return;
77 }
78 options->converged=FALSE;
79 Performance_startMonitor(pp,PERFORMANCE_ALL);
80 _INTEGER_t mtype = MKL_MTYPE_UNSYM;
81 if (A->type & MATRIX_FORMAT_SYM) mtype=MKL_MTYPE_SYM;
82 _INTEGER_t n = A->mainBlock->numRows;
83 _INTEGER_t maxfct=1; /* number of factorizations on the same pattern */
84 _INTEGER_t mnum =1; /* factoriztion to be handeled in this call */
85 _INTEGER_t msglvl=0; /* message level */
86 _INTEGER_t nrhs=1; /* number of right hand sides */
87 _INTEGER_t idum; /* dummy integer */
88 _DOUBLE_PRECISION_t ddum; /* dummy float */
89 _INTEGER_t phase = MKL_PHASE_SYMBOLIC_FACTORIZATION;
90
91 _INTEGER_t error=MKL_ERROR_NO; /* error code */
92 _INTEGER_t iparm[64]; /* parameters */
93 _MKL_DSS_HANDLE_t* pt = (_MKL_DSS_HANDLE_t *)(A->solver);
94 /* set iparm */
95 for (i=0;i<64;++i) iparm[i]=0;
96 iparm[0] = 1; /* no default settings*/
97 switch (options->reordering) {
98 case PASO_MINIMUM_FILL_IN:
99 iparm[1]=MKL_REORDERING_MINIMUM_DEGREE;
100 break;
101 default:
102 iparm[1]=MKL_REORDERING_NESTED_DISSECTION;
103 break;
104 }
105 #ifdef _OPENMP
106 iparm[2] = omp_get_max_threads();
107 #else
108 iparm[2] = 1;
109 #endif
110 iparm[5] = 0; /* store solution into output array */
111 iparm[7] = 2; /* maximum number of refinements */
112 iparm[9] = 13; /* 10**(-iparm[9]) preturbation of pivot elements */
113 iparm[10] = 1; /* rescaling the matrix before factorization started */
114 iparm[17] =0; /* =-1 report number of non-zeroes */
115 iparm[18] =0; /* =-1 report flops */
116
117
118 if (pt==NULL) {
119 /* allocate address pointer */
120 pt=MEMALLOC(64,_MKL_DSS_HANDLE_t);
121 if (Paso_checkPtr(pt)) return;
122 A->solver=(void*) pt;
123 for (i=0;i<64;++i) pt[i]=NULL;
124 time0=Paso_timer();
125 /* symbolic factorization */
126 phase = MKL_PHASE_SYMBOLIC_FACTORIZATION;
127 PARDISO (pt, &maxfct, &mnum, &mtype, &phase,
128 &n, A->mainBlock->val, A->mainBlock->pattern->ptr, A->mainBlock->pattern->index, &idum, &nrhs,
129 iparm, &msglvl, in, out, &error);
130 if (error != MKL_ERROR_NO) {
131 Paso_setError(VALUE_ERROR,"symbolic factorization in paradiso library failed.");
132 Paso_MKL_free(A);
133 } else {
134 /* LDU factorization */
135 phase = MKL_PHASE_FACTORIZATION;
136 PARDISO(pt, &maxfct, &mnum, &mtype, &phase,
137 &n, A->mainBlock->val, A->mainBlock->pattern->ptr, A->mainBlock->pattern->index, &idum, &nrhs,
138 iparm, &msglvl, in, out, &error);
139 if (error != MKL_ERROR_NO) {
140 Paso_setError(ZERO_DIVISION_ERROR,"factorization in paradiso library failed. Most likely the matrix is singular.");
141 Paso_MKL_free(A);
142 }
143 if (options->verbose) printf("MKL: LDU factorization completed.");
144 }
145 options->set_up_time=Paso_timer()-time0;
146 } else {
147 options->set_up_time=0;
148 }
149 /* forward backward substitution\ */
150 if (Paso_noError()) {
151 time0=Paso_timer();
152 phase = MKL_PHASE_SOLVE;
153 PARDISO (pt, &maxfct, &mnum, &mtype, &phase,
154 &n, A->mainBlock->val, A->mainBlock->pattern->ptr, A->mainBlock->pattern->index, &idum, &nrhs,
155 iparm, &msglvl, in, out, &error);
156 if (options->verbose) printf("MKL: solve completed.");
157 if (error != MKL_ERROR_NO) {
158 Paso_setError(VALUE_ERROR,"forward/backward substition in paradiso library failed. Most likely the matrix is singular.");
159 } else {
160 options->residual_norm=0.;
161 options->num_iter=0;
162 options->num_level=0;
163 options->num_inner_iter=0;
164 options->converged=TRUE;
165 }
166 options->time=Paso_timer()-time0 + options->set_up_time;
167 }
168 Performance_stopMonitor(pp,PERFORMANCE_ALL);
169 #else
170 Paso_setError(SYSTEM_ERROR,"Paso_MKL:MKL is not avialble.");
171 #endif
172 }
173 /*
174 * $Log$
175 *
176 */

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