diff options
Diffstat (limited to 'benchmarks/CUDA/DG/3rdParty/ParMetis-3.1/ParMETISLib/xyzpart.c')
| -rw-r--r-- | benchmarks/CUDA/DG/3rdParty/ParMetis-3.1/ParMETISLib/xyzpart.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/benchmarks/CUDA/DG/3rdParty/ParMetis-3.1/ParMETISLib/xyzpart.c b/benchmarks/CUDA/DG/3rdParty/ParMetis-3.1/ParMETISLib/xyzpart.c deleted file mode 100644 index e538034..0000000 --- a/benchmarks/CUDA/DG/3rdParty/ParMetis-3.1/ParMETISLib/xyzpart.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * Copyright 1997, Regents of the University of Minnesota - * - * xyzpart.c - * - * This file contains code that implements a coordinate based partitioning - * - * Started 7/11/97 - * George - * - * $Id: xyzpart.c,v 1.3 2003/07/30 18:37:59 karypis Exp $ - * - */ - -#include <parmetislib.h> - - -/************************************************************************* -* This function implements a simple coordinate based partitioning -**************************************************************************/ -void Coordinate_Partition(CtrlType *ctrl, GraphType *graph, int ndims, float *xyz, - int setup, WorkSpaceType *wspace) -{ - int i, j, k, nvtxs, firstvtx, icoord, coords[3]; - idxtype *vtxdist; - float max[3], min[3], gmin[3], gmax[3], shift[3], scale[3]; - KeyValueType *cand; - - if (setup) - SetUp(ctrl, graph, wspace); - else - graph->nrecv = 0; - - nvtxs = graph->nvtxs; - vtxdist = graph->vtxdist; - - firstvtx = vtxdist[ctrl->mype]; - - cand = (KeyValueType *)GKmalloc(nvtxs*sizeof(KeyValueType), "Coordinate_Partition: cand"); - - /* Compute parameters for coordinate transformation */ - for (k=0; k<ndims; k++) { - min[k] = +10000000; - max[k] = -10000000; - } - for (i=0; i<nvtxs; i++) { - for (k=0; k<ndims; k++) { - if (xyz[i*ndims+k] < min[k]) - min[k] = xyz[i*ndims+k]; - if (xyz[i*ndims+k] > max[k]) - max[k] = xyz[i*ndims+k]; - } - } - - /* Compute global min and max */ - MPI_Allreduce((void *)min, (void *)gmin, ndims, MPI_FLOAT, MPI_MIN, ctrl->comm); - MPI_Allreduce((void *)max, (void *)gmax, ndims, MPI_FLOAT, MPI_MAX, ctrl->comm); - - /* myprintf(ctrl, "Coordinate Range: %e %e, Global %e %e\n", min[0], max[0], gmin[0], gmax[0]); */ - - for (k=0; k<ndims; k++) { - /* rprintf(ctrl, "Dim#%d: %e %e, span: %e\n", k, gmin[k], gmax[k], gmax[k]-gmin[k]); */ - shift[k] = -gmin[k]; - if (gmax[k] != gmin[k]) - scale[k] = 1.0/(gmax[k]-gmin[k]); - else - scale[k] = 1.0; - } - - switch (ctrl->xyztype) { - case XYZ_XCOORD: - for (i=0; i<nvtxs; i++) { - cand[i].key = 1000000*((xyz[i*ndims]+shift[0])*scale[0]); - ASSERT(ctrl, cand[i].key>=0 && cand[i].key<=1000000); - cand[i].val = firstvtx+i; - } - break; - case XYZ_SPFILL: - for (i=0; i<nvtxs; i++) { - for (k=0; k<ndims; k++) - coords[k] = 1024*((xyz[i*ndims+k]+shift[k])*scale[k]); - for (icoord=0, j=9; j>=0; j--) { - for (k=0; k<ndims; k++) - icoord = (icoord<<1) + (coords[k]&(1<<j) ? 1 : 0); - } - cand[i].key = icoord; - cand[i].val = firstvtx+i; - } - break; - default: - errexit("Unknown XYZ_Type type!\n"); - } - - - /* Partition using sorting */ - PartSort(ctrl, graph, cand, wspace); - - free(cand); - -} - - - -/************************************************************************* -* This function sorts a distributed list of KeyValueType in increasing -* order, and uses it to compute a partition. It uses samplesort. -**************************************************************************/ -void PartSort(CtrlType *ctrl, GraphType *graph, KeyValueType *elmnts, WorkSpaceType *wspace) -{ - int i, j, k, nvtxs, nrecv, npes=ctrl->npes, mype=ctrl->mype, firstvtx, lastvtx; - idxtype *scounts, *rcounts, *vtxdist, *perm; - KeyValueType *relmnts, *mypicks, *allpicks; - - nvtxs = graph->nvtxs; - vtxdist = graph->vtxdist; - - scounts = wspace->pv1; - rcounts = wspace->pv2; - - /* Allocate memory for the splitters */ - mypicks = (KeyValueType *)GKmalloc(sizeof(KeyValueType)*(npes+1), "ParSort: mypicks"); - allpicks = (KeyValueType *)GKmalloc(sizeof(KeyValueType)*npes*npes, "ParSort: allpicks"); - - /* Sort the local elements */ - ikeysort(nvtxs, elmnts); - - /* Select the local npes-1 equally spaced elements */ - for (i=1; i<npes; i++) { - mypicks[i-1].key = elmnts[i*(nvtxs/npes)].key; - mypicks[i-1].val = elmnts[i*(nvtxs/npes)].val; - } - - /* PrintPairs(ctrl, npes-1, mypicks, "Mypicks"); */ - - /* Gather the picks to all the processors */ - MPI_Allgather((void *)mypicks, 2*(npes-1), IDX_DATATYPE, (void *)allpicks, 2*(npes-1), IDX_DATATYPE, ctrl->comm); - - /* PrintPairs(ctrl, npes*(npes-1), allpicks, "Allpicks"); */ - - /* Sort all the picks */ - ikeyvalsort(npes*(npes-1), allpicks); - - /* PrintPairs(ctrl, npes*(npes-1), allpicks, "Allpicks"); */ - - /* Select the final splitters. Set the boundaries to simplify coding */ - for (i=1; i<npes; i++) - mypicks[i] = allpicks[i*(npes-1)]; - mypicks[0].key = MIN_INT; - mypicks[npes].key = MAX_INT; - - /* PrintPairs(ctrl, npes+1, mypicks, "Mypicks"); */ - - /* Compute the number of elements that belong to each bucket */ - idxset(npes, 0, scounts); - for (j=i=0; i<nvtxs; i++) { - if (elmnts[i].key < mypicks[j+1].key || (elmnts[i].key == mypicks[j+1].key && elmnts[i].val < mypicks[j+1].val)) - scounts[j]++; - else - scounts[++j]++; - } - MPI_Alltoall(scounts, 1, IDX_DATATYPE, rcounts, 1, IDX_DATATYPE, ctrl->comm); - -/* - PrintVector(ctrl, npes, 0, scounts, "Scounts"); - PrintVector(ctrl, npes, 0, rcounts, "Rcounts"); -*/ - - /* Allocate memory for sorted elements and receive them */ - MAKECSR(i, npes, scounts); - MAKECSR(i, npes, rcounts); - nrecv = rcounts[npes]; - if (wspace->nlarge >= nrecv) - relmnts = (KeyValueType *)wspace->pairs; - else - relmnts = (KeyValueType *)GKmalloc(sizeof(KeyValueType)*nrecv, "ParSort: relmnts"); - - /* Issue the receives first */ - for (i=0; i<npes; i++) - MPI_Irecv((void *)(relmnts+rcounts[i]), 2*(rcounts[i+1]-rcounts[i]), IDX_DATATYPE, i, 1, ctrl->comm, ctrl->rreq+i); - - /* Issue the sends next */ - for (i=0; i<npes; i++) - MPI_Isend((void *)(elmnts+scounts[i]), 2*(scounts[i+1]-scounts[i]), IDX_DATATYPE, i, 1, ctrl->comm, ctrl->sreq+i); - - MPI_Waitall(npes, ctrl->rreq, ctrl->statuses); - MPI_Waitall(npes, ctrl->sreq, ctrl->statuses); - - - /* OK, now do the local sort of the relmnts. Use perm to keep track original order */ - perm = idxmalloc(nrecv, "ParSort: perm"); - for (i=0; i<nrecv; i++) { - perm[i] = relmnts[i].val; - relmnts[i].val = i; - } - ikeysort(nrecv, relmnts); - - - /* Compute what needs to be shifted */ - MPI_Scan((void *)(&nrecv), (void *)(&lastvtx), 1, MPI_INT, MPI_SUM, ctrl->comm); - firstvtx = lastvtx-nrecv; - - /*myprintf(ctrl, "first, last: %d %d\n", firstvtx, lastvtx); */ - - for (j=0, i=0; i<npes; i++) { - if (vtxdist[i+1] > firstvtx) { /* Found the first PE that is passed me */ - if (vtxdist[i+1] >= lastvtx) { - /* myprintf(ctrl, "Shifting %d elements to processor %d\n", lastvtx-firstvtx, i); */ - for (k=0; k<lastvtx-firstvtx; k++, j++) - relmnts[relmnts[j].val].key = i; - } - else { - /* myprintf(ctrl, "Shifting %d elements to processor %d\n", vtxdist[i+1]-firstvtx, i); */ - for (k=0; k<vtxdist[i+1]-firstvtx; k++, j++) - relmnts[relmnts[j].val].key = i; - - firstvtx = vtxdist[i+1]; - } - } - if (vtxdist[i+1] >= lastvtx) - break; - } - - /* Reverse the ordering on the relmnts[].val */ - for (i=0; i<nrecv; i++) { - ASSERTP(ctrl, relmnts[i].key>=0 && relmnts[i].key<npes, (ctrl, "%d %d\n", i, relmnts[i].key)); - relmnts[i].val = perm[i]; - } - - /* OK, now sent it back */ - /* Issue the receives first */ - for (i=0; i<npes; i++) - MPI_Irecv((void *)(elmnts+scounts[i]), 2*(scounts[i+1]-scounts[i]), IDX_DATATYPE, i, 1, ctrl->comm, ctrl->rreq+i); - - /* Issue the sends next */ - for (i=0; i<npes; i++) - MPI_Isend((void *)(relmnts+rcounts[i]), 2*(rcounts[i+1]-rcounts[i]), IDX_DATATYPE, i, 1, ctrl->comm, ctrl->sreq+i); - - MPI_Waitall(npes, ctrl->rreq, ctrl->statuses); - MPI_Waitall(npes, ctrl->sreq, ctrl->statuses); - - - /* Construct a partition for the graph */ - graph->where = idxmalloc(graph->nvtxs+graph->nrecv, "PartSort: graph->where"); - firstvtx = vtxdist[mype]; - for (i=0; i<nvtxs; i++) { - ASSERTP(ctrl, elmnts[i].key>=0 && elmnts[i].key<npes, (ctrl, "%d %d\n", i, elmnts[i].key)); - ASSERTP(ctrl, elmnts[i].val>=vtxdist[mype] && elmnts[i].val<vtxdist[mype+1], (ctrl, "%d %d %d %d\n", i, vtxdist[mype], vtxdist[mype+1], elmnts[i].val)); - graph->where[elmnts[i].val-firstvtx] = elmnts[i].key; - } - - - GKfree((void **)&mypicks, (void **)&allpicks, (void **)&perm, LTERM); - if (wspace->nlarge < nrecv) - free(relmnts); - -} - |
