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optimization of parallel topology

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This commit is contained in:
Joachim Schoeberl 2016-03-07 22:25:40 +01:00
parent 767ee72a49
commit 32e392aec7
1 changed files with 71 additions and 13 deletions
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78
libsrc/meshing/paralleltop.cpp
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@ -447,24 +447,47 @@ namespace netgen
MyMPI_ExchangeTable (send_edges, recv_edges, MPI_TAG_MESH+9, MPI_LocalComm);
cout << "UpdateCoarseGrid - edges mpi-exchange done" << endl;
/*
for (int dest = 1; dest < ntasks; dest++)
{
loc2exchange = -1;
int cnt = 0;
for (PointIndex pi : dest2vert[dest-1])
loc2exchange[pi] = cnt++;
auto ex2loc = dest2vert[dest-1];
FlatArray<int> recvarray = recv_edges[dest-1];
for (int ii = 0; ii < recvarray.Size(); ii+=2)
for (int edge : dest2edge[dest-1])
{
topology.GetEdgeVertices (edge, v1, v2);
INDEX_2 re(recvarray[ii], recvarray[ii+1]);
INDEX_2 es(loc2exchange[v1], loc2exchange[v2]);
INDEX_2 re(ex2loc[recvarray[ii]],
ex2loc[recvarray[ii+1]]);
INDEX_2 es(v1, v2);
if (es == re)
SetDistantEdgeNum(dest, edge);
}
}
*/
for (int dest = 1; dest < ntasks; dest++)
{
auto ex2loc = dest2vert[dest-1];
if (ex2loc.Size() == 0) continue;
INDEX_2_CLOSED_HASHTABLE<int> vert2edge(2*dest2edge[dest-1].Size()+10);
for (int edge : dest2edge[dest-1])
{
topology.GetEdgeVertices (edge, v1, v2);
vert2edge.Set(INDEX_2(v1,v2), edge);
}
FlatArray<int> recvarray = recv_edges[dest-1];
for (int ii = 0; ii < recvarray.Size(); ii+=2)
{
INDEX_2 re(ex2loc[recvarray[ii]],
ex2loc[recvarray[ii+1]]);
if (vert2edge.Used(re))
SetDistantEdgeNum(dest, vert2edge.Get(re));
}
}
NgProfiler::StopTimer (timere);
@ -507,11 +530,19 @@ namespace netgen
for (int dest = 1; dest < ntasks; dest++)
if (dest != id)
{
/*
loc2exchange = -1;
int cnt = 0;
for (PointIndex pi : mesh.Points().Range())
if (IsExchangeVert(dest, pi))
loc2exchange[pi] = cnt++;
*/
if (dest2vert[dest-1].Size() == 0) continue;
loc2exchange = -1;
int cnt = 0;
for (PointIndex pi : dest2vert[dest-1])
loc2exchange[pi] = cnt++;
for (int face : dest2face[dest-1])
{
@ -532,19 +563,18 @@ namespace netgen
MyMPI_ExchangeTable (send_faces, recv_faces, MPI_TAG_MESH+9, MPI_LocalComm);
cout << "UpdateCoarseGrid - faces mpi-exchange done" << endl;
/*
for (int dest = 1; dest < ntasks; dest++)
if (dest != id)
{
loc2exchange = -1;
int cnt = 0;
for (PointIndex pi : mesh.Points().Range())
if (IsExchangeVert(dest, pi))
for (PointIndex pi : dest2vert[dest-1])
loc2exchange[pi] = cnt++;
FlatArray<int> recvarray = recv_faces[dest-1];
for (int ii = 0; ii < recvarray.Size(); ii+=3)
for (int face : dest2face[dest-1])
// for (int face = 1; face <= nfa; face++)
{
topology.GetFaceVertices (face, verts);
INDEX_3 re(recvarray[ii], recvarray[ii+1], recvarray[ii+2]);
@ -553,6 +583,34 @@ namespace netgen
SetDistantFaceNum(dest, face);
}
}
*/
for (int dest = 1; dest < ntasks; dest++)
{
auto ex2loc = dest2vert[dest-1];
if (ex2loc.Size() == 0) continue;
INDEX_3_CLOSED_HASHTABLE<int> vert2face(2*dest2face[dest-1].Size()+10);
for (int face : dest2face[dest-1])
{
topology.GetFaceVertices (face, verts);
vert2face.Set(INDEX_3(verts[0], verts[1], verts[2]), face);
}
FlatArray<int> recvarray = recv_faces[dest-1];
for (int ii = 0; ii < recvarray.Size(); ii+=3)
{
INDEX_3 re(ex2loc[recvarray[ii]],
ex2loc[recvarray[ii+1]],
ex2loc[recvarray[ii+2]]);
if (vert2face.Used(re))
SetDistantFaceNum(dest, vert2face.Get(re));
}
}