mirror of
https://github.com/sfilippone/amg4psblas.git
synced 2026-10-06 22:55:12 +00:00
processMatchedVertices rollback to critical regions
This commit is contained in:
StefanoPetrilli
@@ -66,7 +66,7 @@
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using namespace std;
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#define NUM_THREAD 4
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#define UCHUNK 1000
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#define UCHUNK 5
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const MilanLongInt REQUEST = 1;
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const MilanLongInt SUCCESS = 2;
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@@ -295,7 +295,6 @@ extern "C"
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void processMatchedVertices(
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MilanLongInt NLVer,
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vector<MilanLongInt> &UChunkBeingProcessed,
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staticQueue &U,
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staticQueue &privateU,
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MilanLongInt StartIndex,
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@@ -326,25 +325,25 @@ extern "C"
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staticQueue &privateQOwner,
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omp_lock_t *MateLock);
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void sendBundledMessages(MilanLongInt *numGhostEdgesPtr,
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MilanInt *BufferSizePtr,
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MilanLongInt *Buffer,
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vector<MilanLongInt> &PCumulative,
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vector<MilanLongInt> &PMessageBundle,
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vector<MilanLongInt> &PSizeInfoMessages,
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MilanLongInt *PCounter,
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MilanLongInt NumMessagesBundled,
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MilanLongInt *msgActualPtr,
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MilanLongInt *MessageIndexPtr,
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MilanInt numProcs,
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MilanInt myRank,
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MPI_Comm comm,
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vector<MilanLongInt> &QLocalVtx,
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vector<MilanLongInt> &QGhostVtx,
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vector<MilanLongInt> &QMsgType,
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vector<MilanInt> &QOwner,
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vector<MPI_Request> &SRequest,
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vector<MPI_Status> &SStatus);
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void sendBundledMessages(MilanLongInt *numGhostEdgesPtr,
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MilanInt *BufferSizePtr,
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MilanLongInt *Buffer,
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vector<MilanLongInt> &PCumulative,
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vector<MilanLongInt> &PMessageBundle,
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vector<MilanLongInt> &PSizeInfoMessages,
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MilanLongInt *PCounter,
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MilanLongInt NumMessagesBundled,
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MilanLongInt *msgActualPtr,
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MilanLongInt *MessageIndexPtr,
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MilanInt numProcs,
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MilanInt myRank,
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MPI_Comm comm,
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vector<MilanLongInt> &QLocalVtx,
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vector<MilanLongInt> &QGhostVtx,
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vector<MilanLongInt> &QMsgType,
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vector<MilanInt> &QOwner,
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vector<MPI_Request> &SRequest,
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vector<MPI_Status> &SStatus);
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void processMessages(
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MilanLongInt NLVer,
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+1
-5
@@ -278,12 +278,8 @@ void dalgoDistEdgeApproxDomEdgesLinearSearchMesgBndlSmallMateCMP(
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/////////////////////////// PROCESS MATCHED VERTICES //////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////
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vector<MilanLongInt> UChunkBeingProcessed;
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UChunkBeingProcessed.reserve(UCHUNK);
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//#define PRINT_DEBUG_INFO_
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processMatchedVertices(NLVer,
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UChunkBeingProcessed,
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//UChunkBeingProcessed,
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U,
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privateU,
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StartIndex,
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@@ -1,5 +1,7 @@
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#include "MatchBoxPC.h"
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//TODO parallelize this
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///Find the owner of a ghost node:
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MilanInt findOwnerOfGhost(MilanLongInt vtxIndex, MilanLongInt *mVerDistance,
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MilanInt myRank, MilanInt numProcs) {
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@@ -4,7 +4,6 @@
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void processMatchedVertices(
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MilanLongInt NLVer,
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vector<MilanLongInt> &UChunkBeingProcessed,
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staticQueue &U,
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staticQueue &privateU,
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MilanLongInt StartIndex,
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@@ -37,7 +36,6 @@ void processMatchedVertices(
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{
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MilanLongInt adj1, adj2, adj11, adj12, k, k1, v = -1, w = -1, ghostOwner;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << "=========================************===============================" << endl;
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fflush(stdout);
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@@ -50,90 +48,188 @@ void processMatchedVertices(
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#pragma omp parallel private(k, w, v, k1, adj1, adj2, adj11, adj12, ghostOwner) firstprivate(privateU, StartIndex, EndIndex, privateQLocalVtx, privateQGhostVtx, privateQMsgType, privateQOwner) default(shared) num_threads(NUM_THREAD)
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{
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// TODO what would be the optimal UCHUNK
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// TODO refactor
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vector<MilanLongInt> UChunkBeingProcessed;
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UChunkBeingProcessed.reserve(UCHUNK);
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// TODO what would be the optimal UCHUNK
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// TODO refactor
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vector<MilanLongInt> UChunkBeingProcessed;
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UChunkBeingProcessed.reserve(UCHUNK);
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while (!U.empty())
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{
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extractUChunk(UChunkBeingProcessed, U, privateU);
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for (MilanLongInt u : UChunkBeingProcessed)
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while (!U.empty())
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{
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extractUChunk(UChunkBeingProcessed, U, privateU);
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for (MilanLongInt u : UChunkBeingProcessed)
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{
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")u: " << u;
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fflush(stdout);
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cout << "\n(" << myRank << ")u: " << u;
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fflush(stdout);
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#endif
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if ((u >= StartIndex) && (u <= EndIndex))
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{ // Process Only the Local Vertices
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if ((u >= StartIndex) && (u <= EndIndex))
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{ // Process Only the Local Vertices
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#ifdef COUNT_LOCAL_VERTEX
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localVertices++;
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localVertices++;
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#endif
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// Get the Adjacency list for u
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adj1 = verLocPtr[u - StartIndex]; // Pointer
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adj2 = verLocPtr[u - StartIndex + 1];
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for (k = adj1; k < adj2; k++)
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{
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v = verLocInd[k];
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// Get the Adjacency list for u
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adj1 = verLocPtr[u - StartIndex]; // Pointer
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adj2 = verLocPtr[u - StartIndex + 1];
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for (k = adj1; k < adj2; k++)
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{
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v = verLocInd[k];
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if ((v >= StartIndex) && (v <= EndIndex))
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{ // If Local Vertex:
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if ((v >= StartIndex) && (v <= EndIndex))
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{ // If Local Vertex:
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")v: " << v << " c(v)= " << candidateMate[v - StartIndex] << " Mate[v]: " << Mate[v];
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fflush(stdout);
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#endif
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// If the current vertex is pointing to a matched vertex and is not matched
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// FIXME is there a way to make candidateMate private?
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// for the moment it could generate an error.
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if (not isAlreadyMatched(v, StartIndex, EndIndex, GMate, Mate, Ghost2LocalMap))
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{
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bool seh = false;
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#pragma omp critical(prova)
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{
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seh = candidateMate[v - StartIndex] != u;
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}
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if (seh)
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continue;
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#pragma omp critical(prova)
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{
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// Start: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
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w = computeCandidateMate(verLocPtr[v - StartIndex],
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verLocPtr[v - StartIndex + 1],
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edgeLocWeight, 0,
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verLocInd,
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StartIndex,
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EndIndex,
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GMate,
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Mate,
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Ghost2LocalMap);
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candidateMate[v - StartIndex] = w;
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}
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")" << v << " Points to: " << w;
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cout << "\n(" << myRank << ")v: " << v << " c(v)= " << candidateMate[v - StartIndex] << " Mate[v]: " << Mate[v];
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fflush(stdout);
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#endif
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// If found a dominating edge:
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if (w >= 0)
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{
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if ((w < StartIndex) || (w > EndIndex))
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{ // A ghost
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// If the current vertex is pointing to a matched vertex and is not matched
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// FIXME is there a way to make candidateMate private?
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// for the moment it could generate an error.
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if (not isAlreadyMatched(v, StartIndex, EndIndex, GMate, Mate, Ghost2LocalMap))
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{
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#pragma omp critical
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{
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if (candidateMate[v - StartIndex] == u)
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{
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// Start: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
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w = computeCandidateMate(verLocPtr[v - StartIndex],
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verLocPtr[v - StartIndex + 1],
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edgeLocWeight, 0,
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verLocInd,
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StartIndex,
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EndIndex,
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GMate,
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Mate,
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Ghost2LocalMap);
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candidateMate[v - StartIndex] = w;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")Sending a request message:";
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cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
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cout << "\n(" << myRank << ")" << v << " Points to: " << w;
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fflush(stdout);
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#endif
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// If found a dominating edge:
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if (w >= 0)
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{
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if ((w < StartIndex) || (w > EndIndex))
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{ // A ghost
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")Sending a request message:";
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cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
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#endif
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ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
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ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
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assert(ghostOwner != -1);
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assert(ghostOwner != myRank);
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#pragma omp atomic
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PCounter[ghostOwner]++;
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#pragma omp atomic
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(*msgIndPtr)++;
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#pragma omp atomic
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(*NumMessagesBundledPtr)++;
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privateQLocalVtx.push_back(v);
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privateQGhostVtx.push_back(w);
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privateQMsgType.push_back(REQUEST);
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privateQOwner.push_back(ghostOwner);
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if (candidateMate[NLVer + Ghost2LocalMap[w]] == v)
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{
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Mate[v - StartIndex] = w; // v is a local vertex
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GMate[Ghost2LocalMap[w]] = v; // w is a ghost vertex
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privateU.push_back(v);
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privateU.push_back(w);
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#pragma omp atomic
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(*myCardPtr)++;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")MATCH: (" << v << "," << w << ") ";
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fflush(stdout);
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#endif
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// Decrement the counter:
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PROCESS_CROSS_EDGE(Counter, Ghost2LocalMap[w], SPtr);
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} // End of if CandidateMate[w] = v
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} // End of if a Ghost Vertex
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else
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{ // w is a local vertex
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if (candidateMate[w - StartIndex] == v)
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{
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Mate[v - StartIndex] = w; // v is a local vertex
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Mate[w - StartIndex] = v; // w is a local vertex
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privateU.push_back(v);
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privateU.push_back(w);
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#pragma omp atomic
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(*myCardPtr)++;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")MATCH: (" << v << "," << w << ") ";
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fflush(stdout);
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#endif
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} // End of if(CandidateMate(w) = v
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} // End of Else
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} // End of if(w >=0)
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else
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{
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adj11 = verLocPtr[v - StartIndex];
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adj12 = verLocPtr[v - StartIndex + 1];
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for (k1 = adj11; k1 < adj12; k1++)
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{
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w = verLocInd[k1];
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if ((w < StartIndex) || (w > EndIndex))
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{ // A ghost
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")Sending a failure message: ";
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cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
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fflush(stdout);
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#endif
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ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
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assert(ghostOwner != -1);
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assert(ghostOwner != myRank);
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#pragma omp atomic
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PCounter[ghostOwner]++;
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#pragma omp atomic
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(*msgIndPtr)++;
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#pragma omp atomic
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(*NumMessagesBundledPtr)++;
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privateQLocalVtx.push_back(v);
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privateQGhostVtx.push_back(w);
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privateQMsgType.push_back(FAILURE);
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privateQOwner.push_back(ghostOwner);
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} // End of if(GHOST)
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} // End of for loop
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} // End of Else: w == -1
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// End: PARALLEL_PROCESS_EXPOSED_VERTEX_B(v)
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}
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} // End of task
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} // End of If (candidateMate[v-StartIndex] == u
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} // End of if ( (v >= StartIndex) && (v <= EndIndex) ) //If Local Vertex:
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else
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{ // Neighbor is a ghost vertex
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#pragma omp critical
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{
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if (candidateMate[NLVer + Ghost2LocalMap[v]] == u)
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candidateMate[NLVer + Ghost2LocalMap[v]] = -1;
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if (v != Mate[u - StartIndex])
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{ // u is local
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")Sending a success message: ";
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cout << "\n(" << myRank << ")Ghost is " << v << " Owner is: " << findOwnerOfGhost(v, verDistance, myRank, numProcs) << "\n";
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fflush(stdout);
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#endif
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ghostOwner = findOwnerOfGhost(v, verDistance, myRank, numProcs);
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assert(ghostOwner != -1);
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assert(ghostOwner != myRank);
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#pragma omp atomic
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@@ -142,184 +238,56 @@ void processMatchedVertices(
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(*msgIndPtr)++;
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#pragma omp atomic
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(*NumMessagesBundledPtr)++;
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privateQLocalVtx.push_back(v);
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privateQGhostVtx.push_back(w);
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privateQMsgType.push_back(REQUEST);
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privateQLocalVtx.push_back(u);
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privateQGhostVtx.push_back(v);
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privateQMsgType.push_back(SUCCESS);
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privateQOwner.push_back(ghostOwner);
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#pragma omp critical(prova)
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{
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if (candidateMate[NLVer + Ghost2LocalMap[w]] == v)
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{
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while (!omp_test_lock(&MateLock[v - StartIndex]))
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;
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Mate[v - StartIndex] = w; // v is a local vertex
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GMate[Ghost2LocalMap[w]] = v; // w is a ghost vertex
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// Q.push_back(u);
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privateU.push_back(v);
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privateU.push_back(w);
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#pragma omp atomic
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(*myCardPtr)++;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")MATCH: (" << v << "," << w << ") ";
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fflush(stdout);
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#endif
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} // End of If( v != Mate[u] )
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// Decrement the counter:
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PROCESS_CROSS_EDGE(Counter, Ghost2LocalMap[w], SPtr);
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omp_unset_lock(&MateLock[v - StartIndex]);
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} // End of if CandidateMate[w] = v
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}
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} // End of if a Ghost Vertex
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else
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{ // w is a local vertex
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#pragma omp critical(prova)
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{
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if (candidateMate[w - StartIndex] == v)
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{
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while (!omp_test_lock(&MateLock[v - StartIndex]))
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;
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while (!omp_test_lock(&MateLock[w - StartIndex]))
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;
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} // End of task
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} // End of Else //A Ghost Vertex
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} // End of inner for
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Mate[v - StartIndex] = w; // v is a local vertex
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Mate[w - StartIndex] = v; // w is a local vertex
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// Q.push_back(u);
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privateU.push_back(v);
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privateU.push_back(w);
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#pragma omp atomic
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(*myCardPtr)++;
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")MATCH: (" << v << "," << w << ") ";
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fflush(stdout);
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#endif
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omp_unset_lock(&MateLock[v - StartIndex]);
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omp_unset_lock(&MateLock[w - StartIndex]);
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} // End of if(CandidateMate(w) = v
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}
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} // End of Else
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} // End of if(w >=0)
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else
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{
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adj11 = verLocPtr[v - StartIndex];
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adj12 = verLocPtr[v - StartIndex + 1];
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for (k1 = adj11; k1 < adj12; k1++)
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{
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w = verLocInd[k1];
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if ((w < StartIndex) || (w > EndIndex))
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{ // A ghost
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#ifdef PRINT_DEBUG_INFO_
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cout << "\n(" << myRank << ")Sending a failure message: ";
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cout << "\n(" << myRank << ")Ghost is " << w << " Owner is: " << findOwnerOfGhost(w, verDistance, myRank, numProcs);
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fflush(stdout);
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#endif
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ghostOwner = findOwnerOfGhost(w, verDistance, myRank, numProcs);
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assert(ghostOwner != -1);
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assert(ghostOwner != myRank);
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#pragma omp atomic
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PCounter[ghostOwner]++;
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#pragma omp atomic
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(*msgIndPtr)++;
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#pragma omp atomic
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(*NumMessagesBundledPtr)++;
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privateQLocalVtx.push_back(v);
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privateQGhostVtx.push_back(w);
|
||||
privateQMsgType.push_back(FAILURE);
|
||||
privateQOwner.push_back(ghostOwner);
|
||||
|
||||
} // 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 if ( (v >= StartIndex) && (v <= EndIndex) ) //If Local Vertex:
|
||||
else
|
||||
{ // Neighbor is a ghost vertex
|
||||
|
||||
while (!omp_test_lock(&MateLock[u - StartIndex]))
|
||||
;
|
||||
#pragma omp critical(prova)
|
||||
{
|
||||
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);
|
||||
assert(ghostOwner != -1);
|
||||
assert(ghostOwner != myRank);
|
||||
#pragma omp atomic
|
||||
PCounter[ghostOwner]++;
|
||||
#pragma omp atomic
|
||||
(*msgIndPtr)++;
|
||||
#pragma omp atomic
|
||||
(*NumMessagesBundledPtr)++;
|
||||
privateQLocalVtx.push_back(u);
|
||||
privateQGhostVtx.push_back(v);
|
||||
privateQMsgType.push_back(SUCCESS);
|
||||
privateQOwner.push_back(ghostOwner);
|
||||
|
||||
} // End of If( v != Mate[u] )
|
||||
|
||||
omp_unset_lock(&MateLock[u - StartIndex]);
|
||||
|
||||
} // End of Else //A Ghost Vertex
|
||||
|
||||
} // End of for
|
||||
|
||||
// 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;
|
||||
// TODO privateU.size() < UCHUNK could be commented but it generate errors, why?
|
||||
if (privateU.size() > UCHUNK || U.empty())
|
||||
{
|
||||
#pragma omp critical(U)
|
||||
{
|
||||
while (!privateU.empty())
|
||||
U.push_back(privateU.pop_back());
|
||||
}
|
||||
{
|
||||
while (!privateU.empty())
|
||||
U.push_back(privateU.pop_back());
|
||||
}
|
||||
|
||||
#ifndef error
|
||||
#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());
|
||||
}
|
||||
}
|
||||
{
|
||||
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,
|
||||
privateQGhostVtx,
|
||||
privateQMsgType,
|
||||
privateQOwner);
|
||||
} // End of private.size()
|
||||
}
|
||||
} // End of outer for
|
||||
} // End of while ( !U.empty() )
|
||||
queuesTransfer(U, privateU, QLocalVtx,
|
||||
QGhostVtx,
|
||||
QMsgType, QOwner, privateQLocalVtx,
|
||||
privateQGhostVtx,
|
||||
privateQMsgType,
|
||||
privateQOwner);
|
||||
|
||||
#ifdef COUNT_LOCAL_VERTEX
|
||||
printf("Count local vertexes: %ld for thread %d of processor %d\n",
|
||||
localVertices,
|
||||
omp_get_thread_num(),
|
||||
myRank);
|
||||
printf("Count local vertexes: %ld for thread %d of processor %d\n",
|
||||
localVertices,
|
||||
omp_get_thread_num(),
|
||||
myRank);
|
||||
|
||||
#endif
|
||||
}
|
||||
} // End of parallel region
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user