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

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Revision 969 - (show annotations)
Tue Feb 13 23:02:23 2007 UTC (13 years ago) by ksteube
File MIME type: text/plain
File size: 4008 byte(s)
Parallelization using MPI for solution of implicit problems.

Parallelization for explicit problems has already been accomplished in
the main SVN branch.

This is incomplete and is not ready for use.


1 /* $Id$ */
2
3 /*
4 ********************************************************************************
5 * Copyright 2006 by ACcESS MNRF *
6 * *
7 * http://www.access.edu.au *
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 /* Paso: SystemMatrixPatternPattern */
17
18 /**************************************************************/
19
20 /* Copyrights by ACcESS Australia 2003, 2004, 2005 */
21 /* Author: gross@access.edu.au */
22
23 /**************************************************************/
24
25 #include "Paso.h"
26 #include "SystemMatrixPattern.h"
27
28 /**************************************************************/
29
30 /* creates SystemMatrixPattern */
31
32 Paso_SystemMatrixPattern* Paso_SystemMatrixPattern_unrollBlocks(Paso_SystemMatrixPattern* pattern, \
33 int type, dim_t row_block_size,dim_t col_block_size) {
34 index_t index_offset_in=(pattern->type & PATTERN_FORMAT_OFFSET1 ? 1:0);
35 index_t index_offset_out=(type & PATTERN_FORMAT_OFFSET1 ? 1:0);
36
37 if ((pattern->type & PATTERN_FORMAT_SYM) != (type & PATTERN_FORMAT_SYM)) {
38 Paso_setError(TYPE_ERROR,"Paso_SystemMatrixPattern_unrollBlocks: conversion between symmetric and non-symmetric is not implemented yet");
39 return NULL;
40 }
41 Paso_SystemMatrixPattern*out=NULL;
42 index_t *ptr=NULL,*index=NULL,iPtr;
43 dim_t i,j,k,l;
44 Paso_resetError();
45 dim_t block_size=row_block_size*col_block_size;
46 dim_t new_n_ptr=(pattern->n_ptr)*row_block_size;
47 dim_t new_len=(pattern->len)*block_size;
48
49 ptr=MEMALLOC(new_n_ptr+1,index_t);
50 index=MEMALLOC(new_len,index_t);
51
52
53 if (! ( Paso_checkPtr(ptr) || Paso_checkPtr(index) ) ) {
54 #pragma omp parallel
55 {
56 #pragma omp for private(i) schedule(static)
57 for (i=0;i<new_n_ptr+1;++i) ptr[i]=index_offset_out;
58
59 #pragma omp master
60 ptr[new_n_ptr]=new_len+index_offset_out;
61
62 #pragma omp for private(i,k) schedule(static)
63 for (i=0;i<pattern->n_ptr;++i)
64 for (k=0;k<row_block_size;++k) ptr[i*row_block_size+k]=(pattern->ptr[i]-index_offset_in)*block_size+(pattern->ptr[i+1]-pattern->ptr[i])*col_block_size*k+index_offset_out;
65
66 #pragma omp for private(i,iPtr) schedule(static)
67 for (i=0;i<new_n_ptr;++i)
68 for (iPtr=ptr[i]-index_offset_out;iPtr<ptr[i+1]-index_offset_out;++iPtr) index[iPtr]=index_offset_out;
69
70 #pragma omp for private(i,j,iPtr,k) schedule(static)
71 for (i=0;i<pattern->n_ptr;++i) {
72 for (iPtr=pattern->ptr[i]-index_offset_in;iPtr<pattern->ptr[i+1]-index_offset_in;++iPtr) {
73 for (k=0;k<row_block_size;++k) {
74 for (j=0;j<col_block_size;++j) {
75 index[ptr[i*row_block_size+k]-index_offset_out+(iPtr-(pattern->ptr[i]-index_offset_in))*col_block_size+j]=(pattern->index[iPtr]-index_offset_in)*col_block_size+j+index_offset_out;
76 }
77 }
78 }
79 }
80 }
81 /* create return value */
82 out=Paso_SystemMatrixPattern_alloc(type,new_n_ptr,ptr,index,pattern->MPIInfo);
83 }
84 if (! Paso_noError()) {
85 MEMFREE(index);
86 MEMFREE(ptr);
87 }
88 return out;
89 }
90 /*
91 * $Log$
92 * Revision 1.2 2005/09/15 03:44:39 jgs
93 * Merge of development branch dev-02 back to main trunk on 2005-09-15
94 *
95 * Revision 1.1.2.1 2005/09/05 06:29:47 gross
96 * These files have been extracted from finley to define a stand alone libray for iterative
97 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
98 * has not been tested yet.
99 *
100 *
101 */

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