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

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Revision 3283 - (show annotations)
Mon Oct 18 22:39:28 2010 UTC (10 years, 4 months ago) by gross
File MIME type: text/plain
File size: 6348 byte(s)
AMG reengineered, BUG is Smoother fixed.


1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2010 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: l.gross@uq.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_SparseMatrix* A) {
38 #ifdef MKL
39 index_t i;
40 if ((A->solver_p!=NULL) && (A->solver_package=PASO_MKL) ) {
41 _INTEGER_t mtype = MKL_MTYPE_UNSYM;
42 _INTEGER_t n = A->numRows;
43 _INTEGER_t maxfct=1; /* number of factorizations on the same pattern */
44 _INTEGER_t mnum =1; /* factoriztion to be handeled in this call */
45 _INTEGER_t msglvl=0; /* message level */
46 _INTEGER_t nrhs=1; /* number of right hand sides */
47 _INTEGER_t idum; /* dummy integer */
48 _DOUBLE_PRECISION_t ddum; /* dummy float */
49 _INTEGER_t error=MKL_ERROR_NO; /* error code */
50 _INTEGER_t iparm[64]; /* parameters */
51 for (i=0;i<64;++i) iparm[i]=0;
52
53 _INTEGER_t phase = MKL_PHASE_RELEASE_MEMORY;
54 PARDISO ((_MKL_DSS_HANDLE_t *)(A->solver_p), &maxfct, &mnum, &mtype, &phase,
55 &n, A->val, A->pattern->ptr, A->pattern->index, &idum, &nrhs,
56 iparm, &msglvl,&ddum, &ddum, &error);
57 MEMFREE(A->solver_p);
58 if (error != MKL_ERROR_NO) Paso_setError(TYPE_ERROR,"memory release in PARDISO library failed.");
59 }
60 #endif
61 }
62
63 /* call the solver: */
64
65 void Paso_MKL(Paso_SparseMatrix* A,
66 double* out,
67 double* in,
68 index_t reordering,
69 dim_t numRefinements,
70 bool_t verbose)
71 {
72
73 #ifdef MKL
74 double time0;
75 index_t i;
76
77 if (! (A->type & (MATRIX_FORMAT_OFFSET1 + MATRIX_FORMAT_BLK1)) ) {
78 Esys_setError(TYPE_ERROR,"Paso_MKL: MKL requires CSR format with index offset 1 and block size 1.");
79 return;
80 }
81
82 _INTEGER_t mtype = MKL_MTYPE_UNSYM;
83 _INTEGER_t n = A->numRows;
84 _INTEGER_t maxfct=1; /* number of factorizations on the same pattern */
85 _INTEGER_t mnum =1; /* factoriztion to be handeled in this call */
86 _INTEGER_t msglvl=0; /* message level */
87 _INTEGER_t nrhs=1; /* number of right hand sides */
88 _INTEGER_t idum; /* dummy integer */
89 _DOUBLE_PRECISION_t ddum; /* dummy float */
90 _INTEGER_t phase = MKL_PHASE_SYMBOLIC_FACTORIZATION;
91
92 _INTEGER_t error=MKL_ERROR_NO; /* error code */
93 _INTEGER_t iparm[64]; /* parameters */
94 _MKL_DSS_HANDLE_t* pt = (_MKL_DSS_HANDLE_t *)(A->solver_p);
95 /* set iparm */
96 for (i=0;i<64;++i) iparm[i]=0;
97 iparm[0] = 1; /* no default settings*/
98 switch (reordering) {
99 case PASO_MINIMUM_FILL_IN:
100 iparm[1]=MKL_REORDERING_MINIMUM_DEGREE;
101 break;
102 default:
103 iparm[1]=MKL_REORDERING_NESTED_DISSECTION;
104 break;
105 }
106 #ifdef _OPENMP
107 iparm[2] =omp_get_max_threads();
108 #else
109 iparm[2] = 1;
110 #endif
111 iparm[5] = 0; /* store solution into output array */
112 iparm[7] = numRefinements; /* maximum number of refinements */
113 iparm[9] = 13; /* 10**(-iparm[9]) preturbation of pivot elements */
114 iparm[10] = 1; /* rescaling the matrix before factorization started */
115 iparm[17] =0; /* =-1 report number of non-zeroes */
116 iparm[18] =0; /* =-1 report flops */
117
118 if (pt==NULL) {
119 /* allocate address pointer */
120 pt=MEMALLOC(64,_MKL_DSS_HANDLE_t);
121 if (Esys_checkPtr(pt)) return;
122 A->solver_p=(void*) pt;
123 A->solver_package=PASO_MKL;
124 for (i=0;i<64;++i) pt[i]=NULL;
125 time0=Esys_timer();
126 /* symbolic factorization */
127 phase = MKL_PHASE_SYMBOLIC_FACTORIZATION;
128 PARDISO (pt, &maxfct, &mnum, &mtype, &phase,
129 &n, A->val, A->pattern->ptr, A->pattern->index, &idum, &nrhs,
130 iparm, &msglvl, in, out, &error);
131 if (error != MKL_ERROR_NO) {
132 if (verbose) printf("MKL: symbolic factorization factorization failed.\n");
133 Paso_setError(VALUE_ERROR,"symbolic factorization in PARDISO library failed.");
134 Paso_MKL_free(A);
135 } else {
136 /* LDU factorization */
137 phase = MKL_PHASE_FACTORIZATION;
138 PARDISO(pt, &maxfct, &mnum, &mtype, &phase,
139 &n, A->val, A->pattern->ptr, A->pattern->index, &idum, &nrhs,
140 iparm, &msglvl, in, out, &error);
141 if (error != MKL_ERROR_NO) {
142 if (verbose) printf("MKL: LDU factorization failed.\n");
143 Paso_setError(ZERO_DIVISION_ERROR,"factorization in PARDISO library failed. Most likely the matrix is singular.");
144 Paso_MKL_free(A);
145 }
146 if (verbose) printf("MKL: LDU factorization completed (time = %e).\n",Paso_timer()-time0);
147 }
148
149 /* forward backward substitution\ */
150 if (Esys_noError()) {
151 time0=Esys_timer();
152 phase = MKL_PHASE_SOLVE;
153 PARDISO (pt, &maxfct, &mnum, &mtype, &phase,
154 &n, A->val, A->pattern->ptr, A->pattern->index, &idum, &nrhs,
155 iparm, &msglvl, in, out, &error);
156 if (verbose) printf("MKL: solve completed.\n");
157 if (error != MKL_ERROR_NO) {
158 if (verbose) printf("MKL: forward/backward substitution failed.\n");
159 Paso_setError(VALUE_ERROR,"forward/backward substitution in PARDISO library failed. Most likely the matrix is singular.");
160 } else {
161 if (verbose) printf("MKL: forward/backward substitution completed (time = %e).\n",Paso_timer()-time0);
162 }
163 }
164 #else
165 Esys_setError(SYSTEM_ERROR,"Paso_MKL:MKL is not avialble.");
166 #endif
167 }

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