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

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Revision 3312 - (show annotations)
Tue Oct 26 07:54:58 2010 UTC (8 years, 11 months ago) by gross
File MIME type: text/plain
File size: 3618 byte(s)
last step for a clean up version of the AMG
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: Pattern_unrollBlocks */
18
19 /**************************************************************/
20
21 /* Author: Lutz Gross, l.gross@uq.edu.au */
22
23 /**************************************************************/
24
25 #include "Paso.h"
26 #include "Pattern.h"
27
28 /**************************************************************/
29
30 /* creates Pattern */
31
32 Paso_Pattern* Paso_Pattern_unrollBlocks(Paso_Pattern* pattern, \
33 int type, dim_t output_block_size,dim_t input_block_size) {
34 Paso_Pattern*out=NULL;
35 index_t *ptr=NULL,*index=NULL,iPtr;
36 dim_t i,j,k, block_size, new_len, new_numOutput, new_numInput;
37 const index_t index_offset_in=(pattern->type & MATRIX_FORMAT_OFFSET1 ? 1:0);
38 const index_t index_offset_out=(type & MATRIX_FORMAT_OFFSET1 ? 1:0);
39
40
41 Esys_resetError();
42 if ( ( output_block_size == 1 ) && (input_block_size == 1) && ((pattern->type & MATRIX_FORMAT_OFFSET1) == (type & MATRIX_FORMAT_OFFSET1) ) ) {
43 out = Paso_Pattern_getReference(pattern);
44 } else {
45 block_size=output_block_size*input_block_size;
46 new_len=(pattern->len)*block_size;
47 new_numOutput=(pattern->numOutput)*output_block_size;
48 new_numInput=(pattern->numInput)*input_block_size;
49
50 ptr=MEMALLOC(new_numOutput+1,index_t);
51 index=MEMALLOC(new_len,index_t);
52 if (! ( Esys_checkPtr(ptr) || Esys_checkPtr(index) ) ) {
53 #pragma omp parallel
54 {
55 #pragma omp for private(i) schedule(static)
56 for (i=0;i<new_numOutput+1;++i) ptr[i]=index_offset_out;
57
58 #pragma omp single
59 ptr[new_numOutput]=new_len+index_offset_out;
60
61 #pragma omp for private(i,k) schedule(static)
62 for (i=0;i<pattern->numOutput;++i) {
63 for (k=0;k<output_block_size;++k) {
64 ptr[i*output_block_size+k]=(pattern->ptr[i]-index_offset_in)*block_size+
65 (pattern->ptr[i+1]-pattern->ptr[i])*input_block_size*k+index_offset_out;
66 }
67 }
68
69 #pragma omp for private(i,iPtr) schedule(static)
70 for (i=0;i<new_numOutput;++i) {
71 #pragma ivdep
72 for (iPtr=ptr[i]-index_offset_out;iPtr<ptr[i+1]-index_offset_out;++iPtr) index[iPtr]=index_offset_out;
73 }
74
75 #pragma omp for private(i,j,iPtr,k) schedule(static)
76 for (i=0;i<pattern->numOutput;++i) {
77 for (iPtr=pattern->ptr[i]-index_offset_in;iPtr<pattern->ptr[i+1]-index_offset_in;++iPtr) {
78 for (k=0;k<output_block_size;++k) {
79 #pragma ivdep
80 for (j=0;j<input_block_size;++j) {
81 index[ptr[i*output_block_size+k]-index_offset_out+(iPtr-(pattern->ptr[i]-index_offset_in))*input_block_size+j]=(pattern->index[iPtr]-index_offset_in)*input_block_size+j+index_offset_out;
82 }
83 }
84 }
85 }
86 }
87 out=Paso_Pattern_alloc(type,new_numOutput,new_numInput,ptr,index);
88 }
89 if (! Esys_noError()) {
90 MEMFREE(index);
91 MEMFREE(ptr);
92 }
93 }
94 return out;
95 }

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