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

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Revision 155 - (show annotations)
Wed Nov 9 02:02:19 2005 UTC (13 years, 10 months ago) by jgs
File MIME type: text/plain
File size: 2754 byte(s)
move all directories from trunk/esys2 into trunk and remove esys2

1 /* $Id$ */
2
3 /**************************************************************/
4
5 /* Paso: SystemMatrixPatternPattern */
6
7 /**************************************************************/
8
9 /* Copyrights by ACcESS Australia 2003, 2004, 2005 */
10 /* Author: gross@access.edu.au */
11
12 /**************************************************************/
13
14 #include "Paso.h"
15 #include "SystemMatrixPattern.h"
16
17 /**************************************************************/
18
19 /* creates SystemMatrixPattern */
20
21 Paso_SystemMatrixPattern* Paso_SystemMatrixPattern_unrollBlocks(Paso_SystemMatrixPattern* pattern, \
22 dim_t row_block_size,dim_t col_block_size) {
23 Paso_SystemMatrixPattern*out=NULL;
24 index_t *ptr=NULL,*index=NULL,iPtr;
25 dim_t i,j,k,l;
26 Paso_resetError();
27 dim_t block_size=row_block_size*col_block_size;
28 dim_t new_n_ptr=(pattern->n_ptr)*row_block_size;
29 dim_t new_len=(pattern->len)*block_size;
30
31 ptr=MEMALLOC(new_n_ptr+1,index_t);
32 index=MEMALLOC(new_len,index_t);
33
34
35 if (! ( Paso_checkPtr(ptr) || Paso_checkPtr(index) ) ) {
36 #pragma omp parallel
37 {
38 #pragma omp for private(i) schedule(static)
39 for (i=0;i<new_n_ptr+1;++i) ptr[i]=0;
40
41 #pragma omp master
42 ptr[new_n_ptr]=new_len;
43
44 #pragma omp for private(i,k) schedule(static)
45 for (i=0;i<pattern->n_ptr;++i)
46 for (k=0;k<row_block_size;++k) ptr[i*row_block_size+k]=(pattern->ptr[i]-PTR_OFFSET)*block_size+(pattern->ptr[i+1]-pattern->ptr[i])*col_block_size*k;
47
48 #pragma omp for private(i,iPtr) schedule(static)
49 for (i=0;i<new_n_ptr;++i)
50 for (iPtr=ptr[i];iPtr<ptr[i+1];++iPtr) index[iPtr]=0;
51
52 #pragma omp for private(i,j,iPtr,k) schedule(static)
53 for (i=0;i<pattern->n_ptr;++i) {
54 for (iPtr=pattern->ptr[i];iPtr<pattern->ptr[i+1];++iPtr) {
55 for (k=0;k<row_block_size;++k) {
56 for (j=0;j<col_block_size;++j) {
57 index[ptr[i*row_block_size+k]+(iPtr-pattern->ptr[i])*col_block_size+j]=(pattern->index[iPtr]-INDEX_OFFSET)*col_block_size+j;
58 }
59 }
60 }
61 }
62 }
63 /* create return value */
64 out=Paso_SystemMatrixPattern_alloc(new_n_ptr,ptr,index);
65 }
66 if (! Paso_noError()) {
67 MEMFREE(index);
68 MEMFREE(ptr);
69 }
70 return out;
71 }
72 /*
73 * $Log$
74 * Revision 1.2 2005/09/15 03:44:39 jgs
75 * Merge of development branch dev-02 back to main trunk on 2005-09-15
76 *
77 * Revision 1.1.2.1 2005/09/05 06:29:47 gross
78 * These files have been extracted from finley to define a stand alone libray for iterative
79 * linear solvers on the ALTIX. main entry through Paso_solve. this version compiles but
80 * has not been tested yet.
81 *
82 *
83 */

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