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

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Revision 1628 - (show annotations)
Fri Jul 11 13:12:46 2008 UTC (11 years, 4 months ago) by phornby
File MIME type: text/plain
File size: 9588 byte(s)

Merge in /branches/windows_from_1456_trunk_1620_merged_in branch.

You will find a preserved pre-merge trunk in tags under tags/trunk_at_1625.
That will be useful for diffing & checking on my stupidity.

Here is a list of the conflicts and their resolution at this
point in time.


=================================================================================
(LLWS == looks like white space).

finley/src/Assemble_addToSystemMatrix.c - resolve to branch - unused var. may be wrong.....
finley/src/CPPAdapter/SystemMatrixAdapter.cpp - resolve to branch - LLWS
finley/src/CPPAdapter/MeshAdapter.cpp - resolve to branch - LLWS
paso/src/PCG.c - resolve to branch - unused var fixes.
paso/src/SolverFCT.c - resolve to branch - LLWS
paso/src/FGMRES.c - resolve to branch - LLWS
paso/src/Common.h - resolve to trunk version. It's omp.h's include... not sure it's needed,
but for the sake of saftey.....
paso/src/Functions.c - resolve to branch version, indentation/tab removal and return error
on bad unimplemented Paso_FunctionCall.
paso/src/SolverFCT_solve.c - resolve to branch version, unused vars
paso/src/SparseMatrix_MatrixVector.c - resolve to branch version, unused vars.
escript/src/Utils.cpp - resloved to branch, needs WinSock2.h
escript/src/DataExpanded.cpp - resolved to branch version - LLWS
escript/src/DataFactory.cpp - resolve to branch version
=================================================================================

This currently passes tests on linux (debian), but is not checked on windows or Altix yet.

This checkin is to make a trunk I can check out for windows to do tests on it.

Known outstanding problem is in the operator=() method of exceptions
causing warning messages on the intel compilers.

May the God of doughnuts have mercy on my soul.


1 /* $Id: Coupler.c 1306 2007-09-18 05:51:09Z ksteube $ */
2
3 /*******************************************************
4 *
5 * Copyright 2003-2007 by ACceSS MNRF
6 * Copyright 2007 by University of Queensland
7 *
8 * http://esscc.uq.edu.au
9 * Primary Business: Queensland, Australia
10 * Licensed under the Open Software License version 3.0
11 * http://www.opensource.org/licenses/osl-3.0.php
12 *
13 **************************************************************
14 *
15 * Paso: Connector and Coupler organizes the coupling with in a pattern/matrix
16 * across processors
17 *
18 **************************************************************
19 *
20 * Author: gross@access.edu.au
21 *
22 **************************************************************/
23
24 #include "Coupler.h"
25
26 /*************************************************************
27 *
28 * allocates a Connector
29 *
30 **************************************************************/
31
32 Paso_Connector* Paso_Connector_alloc(Paso_SharedComponents* send,
33 Paso_SharedComponents* recv)
34 {
35 Paso_Connector*out=NULL;
36 Paso_resetError();
37 out=MEMALLOC(1,Paso_Connector);
38 if ( send->mpi_info != recv->mpi_info ) {
39 Paso_setError(SYSTEM_ERROR,"Paso_Coupler_alloc: send and recv mpi communicator don't match.");
40 return NULL;
41 }
42 if ( send->local_length != recv->local_length ) {
43 Paso_setError(SYSTEM_ERROR,"Paso_Coupler_alloc: local length of send and recv Paso_SharedComponents must match.");
44 return NULL;
45 }
46
47 if (!Paso_checkPtr(out)) {
48 out->send=Paso_SharedComponents_getReference(send);
49 out->recv= Paso_SharedComponents_getReference(recv);
50 out->mpi_info = Paso_MPIInfo_getReference(send->mpi_info);
51 out->reference_counter=1;
52 }
53 if (Paso_noError()) {
54 return out;
55 } else {
56 Paso_Connector_free(out);
57 return NULL;
58 }
59 }
60
61 /* returns a reference to Connector */
62
63 Paso_Connector* Paso_Connector_getReference(Paso_Connector* in) {
64 if (in!=NULL) {
65 ++(in->reference_counter);
66 }
67 return in;
68 }
69
70 /* deallocates a Connector: */
71
72 void Paso_Connector_free(Paso_Connector* in) {
73 if (in!=NULL) {
74 in->reference_counter--;
75 if (in->reference_counter<=0) {
76 Paso_SharedComponents_free(in->send);
77 Paso_SharedComponents_free(in->recv);
78 Paso_MPIInfo_free(in->mpi_info);
79 MEMFREE(in);
80 #ifdef Paso_TRACE
81 printf("Paso_Coupler_dealloc: system matrix pattern as been deallocated.\n");
82 #endif
83 }
84 }
85 }
86
87 Paso_Connector* Paso_Connector_copy(Paso_Connector* in) {
88 return Paso_Connector_unroll(in,1);
89 }
90
91 Paso_Connector* Paso_Connector_unroll(Paso_Connector* in, index_t block_size) {
92 Paso_SharedComponents *new_send_shcomp=NULL, *new_recv_shcomp=NULL;
93 Paso_Connector *out=NULL;
94 if (Paso_noError()) {
95 if (block_size>1) {
96 new_send_shcomp=Paso_SharedComponents_alloc(in->send->local_length,
97 in->send->numNeighbors,
98 in->send->neighbor,
99 in->send->shared,
100 in->send->offsetInShared,
101 block_size,0,in->mpi_info);
102
103 new_recv_shcomp=Paso_SharedComponents_alloc(in->recv->local_length,
104 in->recv->numNeighbors,
105 in->recv->neighbor,
106 in->recv->shared,
107 in->recv->offsetInShared,
108 block_size,0,in->mpi_info);
109 } else {
110 new_send_shcomp=Paso_SharedComponents_getReference(in->send);
111 new_recv_shcomp=Paso_SharedComponents_getReference(in->recv);
112 }
113 if (Paso_noError()) out=Paso_Connector_alloc(new_send_shcomp,new_recv_shcomp);
114 }
115 Paso_SharedComponents_free(new_send_shcomp);
116 Paso_SharedComponents_free(new_recv_shcomp);
117 if (Paso_noError()) {
118 return out;
119 } else {
120 Paso_Connector_free(out);
121 return NULL;
122 }
123 }
124 /*************************************************************
125 *
126 * allocates a Connector
127 *
128 **************************************************************/
129
130 Paso_Coupler* Paso_Coupler_alloc(Paso_Connector* connector, dim_t block_size)
131 {
132 Paso_MPIInfo *mpi_info = connector->mpi_info;
133 Paso_Coupler*out=NULL;
134 Paso_resetError();
135 out=MEMALLOC(1,Paso_Coupler);
136 if (!Paso_checkPtr(out)) {
137 out->data=NULL;
138 out->block_size=block_size;
139 out->connector=Paso_Connector_getReference(connector);
140 out->send_buffer=NULL;
141 out->recv_buffer=NULL;
142 out->mpi_requests=NULL;
143 out->mpi_stati=NULL;
144 out->mpi_info = Paso_MPIInfo_getReference(mpi_info);
145 out->reference_counter=1;
146
147 #ifdef PASO_MPI
148 out->mpi_requests=MEMALLOC(connector->send->numNeighbors+connector->recv->numNeighbors,MPI_Request);
149 out->mpi_stati=MEMALLOC(connector->send->numNeighbors+connector->recv->numNeighbors,MPI_Status);
150 Paso_checkPtr(out->mpi_requests);
151 Paso_checkPtr(out->mpi_stati);
152 #endif
153 if (mpi_info->size>1) {
154 out->send_buffer=MEMALLOC(connector->send->numSharedComponents * block_size,double);
155 out->recv_buffer=MEMALLOC(connector->recv->numSharedComponents * block_size,double);
156 Paso_checkPtr(out->send_buffer);
157 Paso_checkPtr(out->recv_buffer);
158 }
159 }
160 if (Paso_noError()) {
161 return out;
162 } else {
163 Paso_Coupler_free(out);
164 return NULL;
165 }
166 }
167
168 /* returns a reference to Coupler */
169
170 Paso_Coupler* Paso_Coupler_getReference(Paso_Coupler* in) {
171 if (in!=NULL) {
172 ++(in->reference_counter);
173 }
174 return in;
175 }
176
177 /* deallocates a Coupler: */
178
179 void Paso_Coupler_free(Paso_Coupler* in) {
180 if (in!=NULL) {
181 in->reference_counter--;
182 if (in->reference_counter<=0) {
183 Paso_Connector_free(in->connector);
184 MEMFREE(in->send_buffer);
185 MEMFREE(in->recv_buffer);
186 MEMFREE(in->mpi_requests);
187 MEMFREE(in->mpi_stati);
188 Paso_MPIInfo_free(in->mpi_info);
189 MEMFREE(in);
190 #ifdef Paso_TRACE
191 printf("Paso_Coupler_dealloc: system matrix pattern as been deallocated.\n");
192 #endif
193 }
194 }
195 }
196
197
198 void Paso_Coupler_startCollect(Paso_Coupler* coupler,double* in)
199 {
200 Paso_MPIInfo *mpi_info = coupler->mpi_info;
201 dim_t block_size=coupler->block_size;
202 size_t block_size_size=block_size*sizeof(double);
203 dim_t i;
204 coupler->data=in;
205 coupler->data=in;
206 if ( mpi_info->size>1) {
207 /* start reveiving input */
208 {
209 for (i=0; i< coupler->connector->recv->numNeighbors; ++i) {
210 #ifdef PASO_MPI
211 MPI_Irecv(&(coupler->recv_buffer[coupler->connector->recv->offsetInShared[i] * block_size]),
212 (coupler->connector->recv->offsetInShared[i+1]- coupler->connector->recv->offsetInShared[i])*block_size,
213 MPI_DOUBLE,
214 coupler->connector->recv->neighbor[i],
215 mpi_info->msg_tag_counter+coupler->connector->recv->neighbor[i],
216 mpi_info->comm,
217 &(coupler->mpi_requests[i]));
218 #endif
219
220 }
221 }
222 /* collect values into buffer */
223 #pragma omp parallel for private(i)
224 for (i=0; i < coupler->connector->send->numSharedComponents;++i) {
225 memcpy(&(coupler->send_buffer[(block_size)*i]),&(in[ block_size * coupler->connector->send->shared[i]]), block_size_size);
226 }
227 /* send buffer out */
228 {
229 for (i=0; i< coupler->connector->send->numNeighbors; ++i) {
230 #ifdef PASO_MPI
231 MPI_Issend(&(coupler->send_buffer[coupler->connector->send->offsetInShared[i] * block_size]),
232 (coupler->connector->send->offsetInShared[i+1]- coupler->connector->send->offsetInShared[i])*block_size,
233 MPI_DOUBLE,
234 coupler->connector->send->neighbor[i],
235 mpi_info->msg_tag_counter+mpi_info->rank,
236 mpi_info->comm,
237 &(coupler->mpi_requests[i+ coupler->connector->recv->numNeighbors]));
238 #endif
239 }
240 }
241 mpi_info->msg_tag_counter+=mpi_info->size;
242 }
243 }
244
245 double* Paso_Coupler_finishCollect(Paso_Coupler* coupler)
246 {
247 Paso_MPIInfo *mpi_info = coupler->mpi_info;
248 if ( mpi_info->size>1) {
249 /* wait for receive */
250 #ifdef PASO_MPI
251 MPI_Waitall(coupler->connector->recv->numNeighbors+coupler->connector->send->numNeighbors,
252 coupler->mpi_requests,
253 coupler->mpi_stati);
254 #endif
255 }
256 return coupler->recv_buffer;
257 }
258 dim_t Paso_Coupler_getLocalLength(const Paso_Coupler* in) {
259 return in->connector->send->local_length;
260
261 }
262 void Paso_Coupler_copyAll(const Paso_Coupler* src, Paso_Coupler* target)
263 {
264 dim_t i;
265 #pragma omp parallel
266 {
267 #pragma omp for private(i)
268 for (i =0; i< src->connector->recv->numSharedComponents * src->block_size; ++i) {
269 target->recv_buffer[i]=src->recv_buffer[i];
270 }
271 #pragma omp for private(i)
272 for (i =0; i< Paso_Coupler_getLocalLength(src) * src->block_size; ++i) {
273 target->data[i]=src->data[i];
274 }
275 }
276 }

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