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template<class ArithT, class RedOpT>
Definition at line 382 of file PxDistribution.h. References _myCPU, _nrCPUs, and RDUCE_TAG. Referenced by PxReduceValueToAllOFT(), and PxReduceValueToRoot(). 00383 { 00384 /*** Reduce value to root using One-level Flat Tree ***/ 00385 00386 ArithT result = ArithT(val); 00387 MPI_Datatype elem; 00388 MPI_Status stat; 00389 MPI_Type_contiguous(sizeof(ArithT), MPI_BYTE, &elem); 00390 MPI_Type_commit(&elem); 00391 00392 if (_myCPU == root) { // receive value from all other CPUs 00393 for (int partner=0; partner<_nrCPUs; partner++) { 00394 if (partner != _myCPU) { 00395 ArithT recvVal; 00396 MPI_Recv(&recvVal, 1, elem, 00397 partner, RDUCE_TAG, MPI_COMM_WORLD, &stat); 00398 redOp.DoIt(result, recvVal); 00399 } 00400 } 00401 } else { // send value to root 00402 MPI_Send(&val, 1, elem, root, RDUCE_TAG, MPI_COMM_WORLD); 00403 } 00404 MPI_Type_free(&elem); 00405 return result; 00406 }
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1.5.1