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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) 2017-2022 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"
#ifdef NBC_CACHE_SCHEDULE
/* tree comparison function for schedule cache */
int NBC_Gather_args_compare(NBC_Gather_args *a, NBC_Gather_args *b, void *param) {
if ((a->sendbuf == b->sendbuf) &&
(a->sendcount == b->sendcount) &&
(a->sendtype == b->sendtype) &&
(a->recvbuf == b->recvbuf) &&
(a->recvcount == b->recvcount) &&
(a->recvtype == b->recvtype) &&
(a->root == b->root)) {
return 0;
}
if( a->sendbuf < b->sendbuf ) {
return -1;
}
return 1;
}
#endif
static int nbc_gather_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, 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;
}
}
if (inplace) {
sendcount = recvcount;
sendtype = recvtype;
}
#ifdef NBC_CACHE_SCHEDULE
NBC_Gather_args *args, *found, search;
/* search schedule in communicator specific tree */
search.sendbuf = sendbuf;
search.sendcount = sendcount;
search.sendtype = sendtype;
search.recvbuf = recvbuf;
search.recvcount = recvcount;
search.recvtype = recvtype;
search.root = root;
found = (NBC_Gather_args *) hb_tree_search ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER],
&search);
if (NULL == found) {
#endif
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 + (MPI_Aint) rcvext * i * recvcount;
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, recvcount, 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, recvcount, 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;
}
#ifdef NBC_CACHE_SCHEDULE
/* save schedule to tree */
args = (NBC_Gather_args *) malloc (sizeof (args));
if (NULL != args) {
args->sendbuf = sendbuf;
args->sendcount = sendcount;
args->sendtype = sendtype;
args->recvbuf = recvbuf;
args->recvcount = recvcount;
args->recvtype = recvtype;
args->root = root;
args->schedule = schedule;
res = hb_tree_insert ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER], args, args, 0);
if (0 == res) {
OBJ_RETAIN(schedule);
/* increase number of elements for A2A */
if (++libnbc_module->NBC_Dict_size[NBC_GATHER] > NBC_SCHED_DICT_UPPER) {
NBC_SchedCache_dictwipe ((hb_tree *) libnbc_module->NBC_Dict[NBC_GATHER],
&libnbc_module->NBC_Dict_size[NBC_GATHER]);
}
} else {
NBC_Error("error in dict_insert() (%i)", res);
free (args);
}
}
} else {
/* found schedule */
schedule = found->schedule;
OBJ_RETAIN(schedule);
}
#endif
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_igather(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, MPI_Datatype recvtype, int root,
struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gather_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, 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_gather_inter_init (const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, 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 = 0;
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 (root == MPI_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 (root != MPI_ROOT && root != MPI_PROC_NULL) {
/* 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) + ((MPI_Aint) rcvext * i * recvcount);
/* root receives message to the right buffer */
res = NBC_Sched_recv (rbuf, false, recvcount, 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_igather_inter(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, MPI_Datatype recvtype, int root,
struct ompi_communicator_t *comm, ompi_request_t ** request,
mca_coll_base_module_t *module) {
int res = nbc_gather_inter_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, 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_gather_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, 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_gather_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root,
comm, request, module, true);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
return OMPI_SUCCESS;
}
int ompi_coll_libnbc_gather_inter_init(const void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf,
int recvcount, 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_gather_inter_init(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root,
comm, request, module, true);
if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
return res;
}
return OMPI_SUCCESS;
}
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