fdurastante
/
amg4psblas
mirror of https://github.com/sfilippone/amg4psblas.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PROCESS MATCHED VERTICES draft of parallelization

Browse Source
omp-walther
StefanoPetrilli 3 years ago
parent f921aa47c4
commit 6c20cd7819
2 changed files with 175 additions and 161 deletions
Show Stats Download Patch File Download Diff File

334
amgprec/impl/aggregator/algoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP.cpp
Unescape Escape View File

@ -1,6 +1,7 @@
#include "MatchBoxPC.h"
#include <omp.h>
#include <stdio.h>
// ***********************************************************************
//
// MatchboxP: A C++ library for approximate weighted matching
@ -602,8 +603,6 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
} //End of if(w >=0)
//This piece of code is executed a really small amount of times, I will not allocate a
//huge amount of memory to the private data structures.
adj11 = verLocPtr[v];
adj12 = verLocPtr[v + 1];
for (k1 = adj11; k1 < adj12; k1++) {
@ -622,16 +621,28 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
PCounter[ghostOwner]++;
QLocalVtx.push_back(v + StartIndex);
QGhostVtx.push_back(w);
QMsgType.push_back(FAILURE);
QOwner.push_back(ghostOwner);
privateQLocalVtx.push_back(v + StartIndex);
privateQGhostVtx.push_back(w);
privateQMsgType.push_back(FAILURE);
privateQOwner.push_back(ghostOwner);
} //End of if(GHOST)
} //End of for loop
//End: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
} //End of for ( v=0; v < NLVer; v++ )
#pragma omp critical(privateMsg)
{
while (!privateQLocalVtx.empty()) {
QLocalVtx.push_back(privateQLocalVtx.pop_back());
QGhostVtx.push_back(privateQGhostVtx.pop_back());
QMsgType.push_back(privateQMsgType.pop_back());
QOwner.push_back(privateQOwner.pop_back());
}
}
#pragma omp critical(U)
{
while (!privateU.empty())
@ -658,202 +669,205 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
MilanLongInt localVertices = 0;
#endif
while( true )
{
while (true) {
#pragma omp critical(U)
{
if (U.empty()) isEmpty = true;
else u = U.pop_front();
} // End of critical U
if (isEmpty) break;
{
if (U.empty()) isEmpty = true;
else u = U.pop_front();
} // End of critical U
if (isEmpty) break;
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")u: "<<u; fflush(stdout);
cout<<"\n("<<myRank<<")u: "<<u; fflush(stdout);
#endif
if ( (u >= StartIndex) && (u <= EndIndex) ) { //Process Only the Local Vertices
if ((u >= StartIndex) && (u <= EndIndex)) { //Process Only the Local Vertices
#ifdef COUNT_LOCAL_VERTEX
localVertices ++;
localVertices ++;
#endif
//Get the Adjacency list for u
adj1 = verLocPtr[u - StartIndex]; //Pointer
adj2 = verLocPtr[u - StartIndex + 1];
for (k = adj1; k < adj2; k++) {
v = verLocInd[k];
//Get the Adjacency list for u
adj1 = verLocPtr[u - StartIndex]; //Pointer
adj2 = verLocPtr[u - StartIndex + 1];
for (k = adj1; k < adj2; k++) {
v = verLocInd[k];
if ((v >= StartIndex) && (v <= EndIndex)) { //If Local Vertex:
#pragma omp critical
{
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")v: "<<v<<" c(v)= "<<candidateMate[v-StartIndex]<<" Mate[v]: "<<Mate[v];
fflush(stdout);
#endif
if ((v >= StartIndex) && (v <= EndIndex)) { //If Local Vertex:
//If the current vertex is pointing to a matched vertex and is not matched
//FIXME is there a way to make candidateMate private?
// for the moment it could generate an error.
if (not isAlreadyMatched(v, StartIndex, EndIndex, GMate, Mate, Ghost2LocalMap) and
candidateMate[v - StartIndex] == u) {
//Start: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
//Start: PARALLEL_COMPUTE_CANDIDATE_MATE_B(v)
w = computeCandidateMate(verLocPtr[v - StartIndex],
verLocPtr[v - StartIndex + 1],
edgeLocWeight, 0,
verLocInd,
StartIndex,
EndIndex,
GMate,
Mate,
Ghost2LocalMap);
candidateMate[v - StartIndex] = w;
//End: PARALLEL_COMPUTE_CANDIDATE_MATE_B(v)
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")"<<v<<" Points to: "<<w; fflush(stdout);
#endif
//If found a dominating edge:
if (w >= 0) {
if ((w < StartIndex) || (w > EndIndex)) { //A ghost
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Sending a request message:";
cout<<"\n("<<myRank<<")Ghost is "<<w<<" Owner is: "<<findOwnerOfGhost(w, verDistance, myRank, numProcs);
#endif
QLocalVtx.push_back(v);
QGhostVtx.push_back(w);
QMsgType.push_back(REQUEST);
ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
QOwner.push_back(ghostOwner);
PCounter[ghostOwner]++;
NumMessagesBundled++;
msgInd++;
if (candidateMate[NLVer + Ghost2LocalMap[w]] == v) {
Mate[v - StartIndex] = w; //v is a local vertex
GMate[Ghost2LocalMap[w]] = v; //w is a ghost vertex
//Q.push_back(u);
privateU.push_back(v);
privateU.push_back(w);
privateMyCard++;
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")MATCH: ("<<v<<","<<w<<") "; fflush(stdout);
#endif
//Decrement the counter:
//Start: PARALLEL_PROCESS_CROSS_EDGE_B(v,w)
if (Counter[Ghost2LocalMap[w]] > 0) {
Counter[Ghost2LocalMap[w]] = Counter[Ghost2LocalMap[w]] - 1; //Decrement
if (Counter[Ghost2LocalMap[w]] == 0) {
S--; //Decrement S
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Decrementing S: Ghost vertex "<<w<<" has received all its messages";
fflush(stdout);
cout<<"\n("<<myRank<<")v: "<<v<<" c(v)= "<<candidateMate[v-StartIndex]<<" Mate[v]: "<<Mate[v];
fflush(stdout);
#endif
}
} //End of if Counter[w] > 0
//End: PARALLEL_PROCESS_CROSS_EDGE_B(v,w)
} //End of if CandidateMate[w] = v
} //End of if a Ghost Vertex
else { //w is a local vertex
if (candidateMate[w - StartIndex] == v) {
Mate[v - StartIndex] = w; //v is a local vertex
Mate[w - StartIndex] = v; //w is a local vertex
//Q.push_back(u);
privateU.push_back(v);
privateU.push_back(w);
privateMyCard++;
//If the current vertex is pointing to a matched vertex and is not matched
//FIXME is there a way to make candidateMate private?
// for the moment it could generate errors.
if (not isAlreadyMatched(v, StartIndex, EndIndex, GMate, Mate, Ghost2LocalMap) and
candidateMate[v - StartIndex] == u) {
//Start: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
//Start: PARALLEL_COMPUTE_CANDIDATE_MATE_B(v)
w = computeCandidateMate(verLocPtr[v - StartIndex],
verLocPtr[v - StartIndex + 1],
edgeLocWeight, 0,
verLocInd,
StartIndex,
EndIndex,
GMate,
Mate,
Ghost2LocalMap);
candidateMate[v - StartIndex] = w;
//End: PARALLEL_COMPUTE_CANDIDATE_MATE_B(v)
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")MATCH: ("<<v<<","<<w<<") "; fflush(stdout);
cout<<"\n("<<myRank<<")"<<v<<" Points to: "<<w; fflush(stdout);
#endif
} //End of if(CandidateMate(w) = v
} //End of Else
} //End of if(w >=0)
else {
adj11 = verLocPtr[v - StartIndex];
adj12 = verLocPtr[v - StartIndex + 1];
for (k1 = adj11; k1 < adj12; k1++) {
w = verLocInd[k1];
//If found a dominating edge:
if (w >= 0) {
if ((w < StartIndex) || (w > EndIndex)) { //A ghost
//Build the Message Packet:
//Message[0] = v; //LOCAL
//Message[1] = w; //GHOST
//Message[2] = FAILURE; //TYPE
//Send a Request (Asynchronous)
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Sending a failure message: ";
cout<<"\n("<<myRank<<")Sending a request message:";
cout<<"\n("<<myRank<<")Ghost is "<<w<<" Owner is: "<<findOwnerOfGhost(w, verDistance, myRank, numProcs);
fflush(stdout);
#endif
/* MPI_Bsend(&Message[0], 3, MPI_INT, inputSubGraph.findOwner(w),
ComputeTag, comm); */
QLocalVtx.push_back(v);
QGhostVtx.push_back(w);
QMsgType.push_back(FAILURE);
//ghostOwner = inputSubGraph.findOwner(w);
ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
QOwner.push_back(ghostOwner);
QLocalVtx.push_back(v);
QGhostVtx.push_back(w);
QMsgType.push_back(REQUEST);
PCounter[ghostOwner]++;
NumMessagesBundled++;
msgInd++;
} //End of if(GHOST)
} //End of for loop
} // End of Else: w == -1
//End: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
} //End of If (candidateMate[v-StartIndex] == u)
} //End of critical region if
} //End of if ( (v >= StartIndex) && (v <= EndIndex) ) //If Local Vertex:
else { //Neighbor is a ghost vertex
if (candidateMate[NLVer + Ghost2LocalMap[w]] == v) {
Mate[v - StartIndex] = w; //v is a local vertex
GMate[Ghost2LocalMap[w]] = v; //w is a ghost vertex
//Q.push_back(u);
privateU.push_back(v);
privateU.push_back(w);
privateMyCard++;
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")MATCH: ("<<v<<","<<w<<") "; fflush(stdout);
#endif
//Decrement the counter:
//Start: PARALLEL_PROCESS_CROSS_EDGE_B(v,w)
if (Counter[Ghost2LocalMap[w]] > 0) {
Counter[Ghost2LocalMap[w]] = Counter[Ghost2LocalMap[w]] - 1; //Decrement
if (Counter[Ghost2LocalMap[w]] == 0) {
S--; //Decrement S
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Decrementing S: Ghost vertex "<<w<<" has received all its messages";
fflush(stdout);
#endif
}
} //End of if Counter[w] > 0
#pragma omp critical
{
if (candidateMate[NLVer + Ghost2LocalMap[v]] == u)
candidateMate[NLVer + Ghost2LocalMap[v]] = -1;
if (v != Mate[u - StartIndex]) { //u is local
//Build the Message Packet:
//Message[0] = u; //LOCAL
//Message[1] = v; //GHOST
//Message[2] = SUCCESS; //TYPE
//Send a Request (Asynchronous)
//End: PARALLEL_PROCESS_CROSS_EDGE_B(v,w)
} //End of if CandidateMate[w] = v
} //End of if a Ghost Vertex
else { //w is a local vertex
if (candidateMate[w - StartIndex] == v) {
Mate[v - StartIndex] = w; //v is a local vertex
Mate[w - StartIndex] = v; //w is a local vertex
privateU.push_back(v);
privateU.push_back(w);
privateMyCard++;
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Sending a success message: ";
cout<<"\n("<<myRank<<")Ghost is "<<v<<" Owner is: "<<findOwnerOfGhost(v, verDistance, myRank, numProcs)<<"\n"; fflush(stdout);
cout<<"\n("<<myRank<<")MATCH: ("<<v<<","<<w<<") "; fflush(stdout);
#endif
} //End of if(CandidateMate(w) = v
QLocalVtx.push_back(u);
QGhostVtx.push_back(v);
QMsgType.push_back(SUCCESS);
ghostOwner = findOwnerOfGhost(v, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
QOwner.push_back(ghostOwner);
PCounter[ghostOwner]++;
NumMessagesBundled++;
msgInd++;
} //End of If( v != Mate[u] )
} //End of critical region
} //End of Else //A Ghost Vertex
} //End of For Loop adj(u)
} //End of if ( (u >= StartIndex) && (u <= EndIndex) ) //Process Only If a Local Vertex
} //End of Else
} //End of if(w >=0)
else {
adj11 = verLocPtr[v - StartIndex];
adj12 = verLocPtr[v - StartIndex + 1];
for (k1 = adj11; k1 < adj12; k1++) {
w = verLocInd[k1];
if ((w < StartIndex) || (w > EndIndex)) { //A ghost
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Sending a failure message: ";
cout<<"\n("<<myRank<<")Ghost is "<<w<<" Owner is: "<<findOwnerOfGhost(w, verDistance, myRank, numProcs);
fflush(stdout);
#endif
ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
privateQLocalVtx.push_back(v);
privateQGhostVtx.push_back(w);
privateQMsgType.push_back(FAILURE);
privateQOwner.push_back(ghostOwner);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
PCounter[ghostOwner]++;
NumMessagesBundled++;
msgInd++;
} //End of if(GHOST)
} //End of for loop
} // End of Else: w == -1
//End: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
//} //End of critical region if
} //End of If (candidateMate[v-StartIndex] == u)
//}//End of critical region
} //End of if ( (v >= StartIndex) && (v <= EndIndex) ) //If Local Vertex:
else { //Neighbor is a ghost vertex
if (candidateMate[NLVer + Ghost2LocalMap[v]] == u)
candidateMate[NLVer + Ghost2LocalMap[v]] = -1;
if (v != Mate[u - StartIndex]) { //u is local
#ifdef PRINT_DEBUG_INFO_
cout<<"\n("<<myRank<<")Sending a success message: ";
cout<<"\n("<<myRank<<")Ghost is "<<v<<" Owner is: "<<findOwnerOfGhost(v, verDistance, myRank, numProcs)<<"\n"; fflush(stdout);
#endif
ghostOwner = findOwnerOfGhost(v, verDistance, myRank, numProcs);
QLocalVtx.push_back(u);
QGhostVtx.push_back(v);
QMsgType.push_back(SUCCESS);
QOwner.push_back(ghostOwner);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
PCounter[ghostOwner]++;
NumMessagesBundled++;
msgInd++;
} //End of If( v != Mate[u] )
} //End of Else //A Ghost Vertex
}// end of critical section
} //End of For Loop adj(u)
} //End of if ( (u >= StartIndex) && (u <= EndIndex) ) //Process Only If a Local Vertex
#pragma omp critical(U)
{
while(!privateU.empty()) {
U.push_back(privateU.pop_front());
}
{
while (!privateU.empty()) {
U.push_back(privateU.pop_front());
}
myCard += privateMyCard;
} //End of critical U
myCard += privateMyCard;
} //End of critical U
} //End of while ( /*!Q.empty()*/ !U.empty() )
} //End of while
#pragma omp critical(privateMsg)
{

2
samples/advanced/pdegen/runs/amg_pde3d.inp
Unescape Escape View File

@ -1,6 +1,6 @@
%%%%%%%%%%% General arguments % Lines starting with % are ignored.
CSR ! Storage format CSR COO JAD
0123 ! IDIM; domain size. Linear system size is IDIM**3
00080 ! IDIM; domain size. Linear system size is IDIM**3
CONST ! PDECOEFF: CONST, EXP, GAUSS Coefficients of the PDE
BICGSTAB ! Iterative method: BiCGSTAB BiCGSTABL BiCG CG CGS FCG GCR RGMRES
2 ! ISTOPC

Write Preview
Loading…
Cancel
Save