69 строки
2.3 KiB
C
69 строки
2.3 KiB
C
/*
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* Copyright (c) 2006 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2006 The Technical University of Chemnitz. All
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* rights reserved.
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*
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* Author(s): Torsten Hoefler <htor@cs.indiana.edu>
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*
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*/
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#include "nbc_internal.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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int NBC_Ibcast_inter(void *buffer, int count, MPI_Datatype datatype, int root, MPI_Comm comm, NBC_Handle* handle) {
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int rank, p, res, size, segsize, peer;
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NBC_Schedule *schedule;
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res = NBC_Init_handle(handle, comm);
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if(res != NBC_OK) { printf("Error in NBC_Init_handle(%i)\n", res); return res; }
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res = MPI_Comm_rank(comm, &rank);
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if (MPI_SUCCESS != res) { printf("MPI Error in MPI_Comm_rank() (%i)\n", res); return res; }
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res = MPI_Comm_size(comm, &p);
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if (MPI_SUCCESS != res) { printf("MPI Error in MPI_Comm_rank() (%i)\n", res); return res; }
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res = MPI_Type_size(datatype, &size);
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if (MPI_SUCCESS != res) { printf("MPI Error in MPI_Type_size() (%i)\n", res); return res; }
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handle->tmpbuf=NULL;
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schedule = (NBC_Schedule*)malloc(sizeof(NBC_Schedule));
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res = NBC_Sched_create(schedule);
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if(res != NBC_OK) { printf("Error in NBC_Sched_create, res = %i\n", res); return res; }
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if(root != MPI_PROC_NULL) {
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/* send to all others */
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if(root == MPI_ROOT) {
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int remsize;
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res = MPI_Comm_remote_size(comm, &remsize);
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if(MPI_SUCCESS != res) { printf("MPI_Comm_remote_size() failed\n", res); return res; }
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for (peer=0;peer<remsize;peer++) {
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/* send msg to peer */
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res = NBC_Sched_send(buffer, false, count, datatype, peer, schedule);
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if (NBC_OK != res) { printf("Error in NBC_Sched_send() (%i)\n", res); return res; }
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}
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} else {
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/* recv msg from root */
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res = NBC_Sched_recv(buffer, false, count, datatype, root, schedule);
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if (NBC_OK != res) { printf("Error in NBC_Sched_recv() (%i)\n", res); return res; }
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}
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}
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res = NBC_Sched_commit(schedule);
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if (NBC_OK != res) { printf("Error in NBC_Sched_commit() (%i)\n", res); return res; }
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res = NBC_Start(handle, schedule);
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if (NBC_OK != res) { printf("Error in NBC_Start() (%i)\n", res); return res; }
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return NBC_OK;
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}
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#ifdef __cplusplus
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}
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#endif
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