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processMatchedVertices partially working mixed critical and lock version

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omp-walther
StefanoPetrilli 2 years ago
parent 561cadee0f
commit a9bb6b26fa
3 changed files with 151 additions and 146 deletions
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5
amgprec/impl/aggregator/MatchBoxPC.h
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@ -66,7 +66,7 @@
using namespace std;
#define NUM_THREAD 4
#define UCHUNK 100000
#define UCHUNK 1000
const MilanLongInt REQUEST = 1;
const MilanLongInt SUCCESS = 2;
@ -323,7 +323,8 @@ extern "C"
staticQueue &privateQLocalVtx,
staticQueue &privateQGhostVtx,
staticQueue &privateQMsgType,
staticQueue &privateQOwner);
staticQueue &privateQOwner,
omp_lock_t *MateLock);
void sendBundledMessages(MilanLongInt *numGhostEdgesPtr,
MilanInt *BufferSizePtr,

4
amgprec/impl/aggregator/algoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP.cpp
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@ -281,6 +281,7 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
vector<MilanLongInt> UChunkBeingProcessed;
UChunkBeingProcessed.reserve(UCHUNK);
//#define PRINT_DEBUG_INFO_
processMatchedVertices(NLVer,
UChunkBeingProcessed,
U,
@ -310,7 +311,8 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
privateQLocalVtx,
privateQGhostVtx,
privateQMsgType,
privateQOwner);
privateQOwner,
MateLock);
/////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////// SEND BUNDLED MESSAGES /////////////////////////////////////

138
amgprec/impl/aggregator/processMatchedVertices.cpp
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@ -32,21 +32,13 @@ void processMatchedVertices(
staticQueue &privateQLocalVtx,
staticQueue &privateQGhostVtx,
staticQueue &privateQMsgType,
staticQueue &privateQOwner)
staticQueue &privateQOwner,
omp_lock_t *MateLock)
{
MilanLongInt adj1, adj2, adj11, adj12, k, k1, v = -1, w = -1, ghostOwner;
MilanLongInt myCard = *myCardPtr, msgInd = *msgIndPtr, NumMessagesBundled = *NumMessagesBundledPtr, S = *SPtr, privateMyCard = 0;
// TODO check that the queues arrives empty
assert(privateQGhostVtx.empty());
assert(privateQLocalVtx.empty());
assert(privateQMsgType.empty());
assert(privateQOwner.empty());
#pragma omp parallel private(k, w, v, k1, adj1, adj2, adj11, adj12, ghostOwner) firstprivate(privateMyCard, privateU, StartIndex, EndIndex, privateQLocalVtx, privateQGhostVtx, privateQMsgType, privateQOwner) default(shared) num_threads(NUM_THREAD)
{
#ifdef PRINT_DEBUG_INFO_
cout << "\n(" << myRank << "=========================************===============================" << endl;
fflush(stdout);
@ -56,6 +48,8 @@ void processMatchedVertices(
#ifdef COUNT_LOCAL_VERTEX
MilanLongInt localVertices = 0;
#endif
#pragma omp parallel private(k, w, v, k1, adj1, adj2, adj11, adj12, ghostOwner) firstprivate(privateMyCard, privateU, StartIndex, EndIndex, privateQLocalVtx, privateQGhostVtx, privateQMsgType, privateQOwner) default(shared) num_threads(NUM_THREAD)
{
// TODO what would be the optimal UCHUNK
// TODO refactor
@ -89,8 +83,6 @@ void processMatchedVertices(
if ((v >= StartIndex) && (v <= EndIndex))
{ // If Local Vertex:
#pragma omp critical(innerProcessMatched)
{
#ifdef PRINT_DEBUG_INFO_
cout << "\n(" << myRank << ")v: " << v << " c(v)= " << candidateMate[v - StartIndex] << " Mate[v]: " << Mate[v];
@ -100,12 +92,20 @@ void processMatchedVertices(
// 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)
if (not isAlreadyMatched(v, StartIndex, EndIndex, GMate, Mate, Ghost2LocalMap))
{
bool seh = false;
#pragma omp critical(prova)
{
seh = candidateMate[v - StartIndex] != u;
}
if (seh)
continue;
#pragma omp critical(prova)
{
// 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,
@ -117,8 +117,8 @@ void processMatchedVertices(
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);
@ -127,17 +127,6 @@ void processMatchedVertices(
if (w >= 0)
{
// TODO is it possible to lock without a critical region?
// TODO there must be a more elegant and efficient way to do this
/*
while(true) {
if (omp_test_lock(&MateLock[v - StartIndex])) {
if (omp_test_lock(&MateLock[w - StartIndex])) break;
else omp_unset_lock(&MateLock[v - StartIndex]);
}
}
*/
if ((w < StartIndex) || (w > EndIndex))
{ // A ghost
#ifdef PRINT_DEBUG_INFO_
@ -145,20 +134,27 @@ void processMatchedVertices(
cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
#endif
msgInd++;
NumMessagesBundled++;
ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
#pragma omp atomic
PCounter[ghostOwner]++;
#pragma omp atomic
msgInd++;
#pragma omp atomic
NumMessagesBundled++;
privateQLocalVtx.push_back(v);
privateQGhostVtx.push_back(w);
privateQMsgType.push_back(REQUEST);
privateQOwner.push_back(ghostOwner);
#pragma omp critical(prova)
{
if (candidateMate[NLVer + Ghost2LocalMap[w]] == v)
{
while (!omp_test_lock(&MateLock[v - StartIndex]))
;
Mate[v - StartIndex] = w; // v is a local vertex
GMate[Ghost2LocalMap[w]] = v; // w is a ghost vertex
// Q.push_back(u);
@ -170,16 +166,23 @@ void processMatchedVertices(
fflush(stdout);
#endif
// TODO refactor this
// Decrement the counter:
PROCESS_CROSS_EDGE(Counter, Ghost2LocalMap[w], &S);
omp_unset_lock(&MateLock[v - StartIndex]);
} // End of if CandidateMate[w] = v
}
} // End of if a Ghost Vertex
else
{ // w is a local vertex
#pragma omp critical(prova)
{
if (candidateMate[w - StartIndex] == v)
{
while (!omp_test_lock(&MateLock[v - StartIndex]))
;
while (!omp_test_lock(&MateLock[w - StartIndex]))
;
Mate[v - StartIndex] = w; // v is a local vertex
Mate[w - StartIndex] = v; // w is a local vertex
// Q.push_back(u);
@ -190,12 +193,12 @@ void processMatchedVertices(
cout << "\n(" << myRank << ")MATCH: (" << v << "," << w << ") ";
fflush(stdout);
#endif
omp_unset_lock(&MateLock[v - StartIndex]);
omp_unset_lock(&MateLock[w - StartIndex]);
} // End of if(CandidateMate(w) = v
}
} // End of Else
// omp_unset_lock(&MateLock[v - StartIndex]);
// omp_unset_lock(&MateLock[w - StartIndex]);
} // End of if(w >=0)
else
{
@ -212,12 +215,16 @@ void processMatchedVertices(
cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
fflush(stdout);
#endif
msgInd++;
NumMessagesBundled++;
ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
#pragma omp atomic
PCounter[ghostOwner]++;
#pragma omp atomic
msgInd++;
#pragma omp atomic
NumMessagesBundled++;
privateQLocalVtx.push_back(v);
privateQGhostVtx.push_back(w);
@ -231,26 +238,19 @@ void processMatchedVertices(
} // 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
#pragma omp critical(innerProcessMatched)
while (!omp_test_lock(&MateLock[u - StartIndex]))
;
#pragma omp critical(prova)
{
// while(!omp_test_lock(&MateLock[u - StartIndex]));
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)
#ifdef PRINT_DEBUG_INFO_
cout << "\n(" << myRank << ")Sending a success message: ";
@ -258,12 +258,15 @@ void processMatchedVertices(
fflush(stdout);
#endif
msgInd++;
NumMessagesBundled++;
ghostOwner = findOwnerOfGhost(v, verDistance, myRank, numProcs);
assert(ghostOwner != -1);
assert(ghostOwner != myRank);
#pragma omp atomic
PCounter[ghostOwner]++;
#pragma omp atomic
msgInd++;
#pragma omp atomic
NumMessagesBundled++;
privateQLocalVtx.push_back(u);
privateQGhostVtx.push_back(v);
@ -272,39 +275,38 @@ void processMatchedVertices(
} // End of If( v != Mate[u] )
// omp_unset_lock(&MateLock[u - StartIndex]);
omp_unset_lock(&MateLock[u - StartIndex]);
} // End of critical region
} // End of Else //A Ghost Vertex
} // End of For Loop adj(u)
} // End of for
} // End of if ( (u >= StartIndex) && (u <= EndIndex) ) //Process Only If a Local Vertex
// Ask for the critical section only when a certain amount
// of data have been accumulated in the private queue
if (privateU.size() < UCHUNK && !U.empty())
// TODO commenting that part of code might generate errors
// Ask for the critical section only when there are no more data to
// compute.
if (/*privateU.size() < UCHUNK &&*/ !U.empty())
continue;
printf("Executed \n");
#ifdef error
#pragma omp critical(U)
{
while (!privateU.empty())
U.push_back(privateU.pop_back());
}
#endif
#ifndef error
queuesTransfer(U, privateU, QLocalVtx,
QGhostVtx,
QMsgType, QOwner, privateQLocalVtx,
privateQGhostVtx,
privateQMsgType,
privateQOwner);
#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());
}
}
#endif
}
}
} // End of while ( !U.empty() )
queuesTransfer(U, privateU, QLocalVtx,
QGhostVtx,
QMsgType, QOwner, privateQLocalVtx,

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