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/* -*- Mode: C; c-basic-offset:2 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2006 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2006 The Technical University of Chemnitz. All
* rights reserved.
* Copyright (c) 2013 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2014-2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 IBM Corporation. All rights reserved.
* Copyright (c) 2018 FUJITSU LIMITED. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* Author(s): Torsten Hoefler <htor@cs.indiana.edu>
*
*/
#include "nbc_internal.h"
/* an gatherv schedule can not be cached easily because the contents
* of the recvcounts array may change, so a comparison of the address
* would not be sufficient ... we simply do not cache it */
static int nbc_gatherv_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module, bool persistent) {
int rank, p, res;
MPI_Aint rcvext = 0;
NBC_Schedule *schedule;
char *rbuf, inplace = 0;
ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
rank = ompi_comm_rank (comm);
if (root == rank) {
NBC_IN_PLACE(sendbuf, recvbuf, inplace);
}
p = ompi_comm_size (comm);
if (rank == root) {
res = ompi_datatype_type_extent(recvtype, &rcvext);
if (MPI_SUCCESS != res) {
NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
return res;
}
}
schedule = OBJ_NEW(NBC_Schedule);
if (OPAL_UNLIKELY(NULL == schedule)) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/* send to root */
if (rank != root) {
/* send msg to root */
res = NBC_Sched_send (sendbuf, false, sendcount, sendtype, root, schedule, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
} else {
for (int i = 0 ; i < p ; ++i) {
rbuf = (char *) recvbuf + displs[i] * rcvext;
if (i == root) {
if (!inplace) {
/* if I am the root - just copy the message */
res = NBC_Sched_copy ((void *)sendbuf, false, sendcount, sendtype,
rbuf, false, recvcounts[i], recvtype, schedule, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
}
} else {
/* root receives message to the right buffer */
res = NBC_Sched_recv (rbuf, false, recvcounts[i], recvtype, i, schedule, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
}
}
}
res = NBC_Sched_commit (schedule);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
res = NBC_Schedule_request(schedule, comm, libnbc_module, persistent, request, NULL);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
return OMPI_SUCCESS;
}
int ompi_coll_libnbc_igatherv(const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gatherv_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root,
comm, request, module, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
res = NBC_Start(*(ompi_coll_libnbc_request_t **)request);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
NBC_Return_handle (*(ompi_coll_libnbc_request_t **)request);
*request = &ompi_request_null.request;
return res;
}
return OMPI_SUCCESS;
}
static int nbc_gatherv_inter_init (const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module, bool persistent) {
int res, rsize;
MPI_Aint rcvext;
NBC_Schedule *schedule;
char *rbuf;
ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
rsize = ompi_comm_remote_size (comm);
if (MPI_ROOT == root) {
res = ompi_datatype_type_extent(recvtype, &rcvext);
if (MPI_SUCCESS != res) {
NBC_Error("MPI Error in ompi_datatype_type_extent() (%i)", res);
return res;
}
}
schedule = OBJ_NEW(NBC_Schedule);
if (OPAL_UNLIKELY(NULL == schedule)) {
return OMPI_ERR_OUT_OF_RESOURCE;
}
/* send to root */
if (MPI_ROOT != root && MPI_PROC_NULL != root) {
/* send msg to root */
res = NBC_Sched_send (sendbuf, false, sendcount, sendtype, root, schedule, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
} else if (MPI_ROOT == root) {
for (int i = 0 ; i < rsize ; ++i) {
rbuf = (char *) recvbuf + displs[i] * rcvext;
/* root receives message to the right buffer */
res = NBC_Sched_recv (rbuf, false, recvcounts[i], recvtype, i, schedule, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
}
}
res = NBC_Sched_commit (schedule);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
res = NBC_Schedule_request(schedule, comm, libnbc_module, persistent, request, NULL);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
OBJ_RELEASE(schedule);
return res;
}
return OMPI_SUCCESS;
}
int ompi_coll_libnbc_igatherv_inter(const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gatherv_inter_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root,
comm, request, module, false);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
res = NBC_Start(*(ompi_coll_libnbc_request_t **)request);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
NBC_Return_handle (*(ompi_coll_libnbc_request_t **)request);
*request = &ompi_request_null.request;
return res;
}
return OMPI_SUCCESS;
}
int ompi_coll_libnbc_gatherv_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, MPI_Info info, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gatherv_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root,
comm, request, module, true);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
return OMPI_SUCCESS;
}
int ompi_coll_libnbc_gatherv_inter_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype,
void* recvbuf, const int *recvcounts, const int *displs, MPI_Datatype recvtype,
int root, struct ompi_communicator_t *comm, MPI_Info info, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gatherv_inter_init(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root,
comm, request, module, true);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
return OMPI_SUCCESS;
}
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