ENDFOREACH()
FOREACH (ALLGATHER_COLL default 2dmesh 3dmesh bruck GB loosely_lr
NTSLR NTSLR_NB pair rdb rhv ring SMP_NTS
- smp_simple spreading_simple ompi mpich ompi_neighborexchange mvapich2 impi)
+ smp_simple spreading_simple ompi mpich ompi_neighborexchange mvapich2 mvapich2_smp impi)
ADD_TESH(tesh-smpi-allgather-coll-${ALLGATHER_COLL} --cfg smpi/allgather:${ALLGATHER_COLL} --setenv bindir=${CMAKE_BINARY_DIR}/teshsuite/smpi/allgather --cd ${CMAKE_HOME_DIRECTORY}/teshsuite/smpi/allgather allgather_coll.tesh)
ENDFOREACH()
FOREACH (ALLGATHERV_COLL default GB pair ring ompi mpich ompi_neighborexchange ompi_bruck mpich_rdb mpich_ring mvapich2 impi)
src/smpi/colls/allgather-loosely-lr.c
src/smpi/colls/allgather-ompi-neighborexchange.c
src/smpi/colls/allgather-pair.c
+ src/smpi/colls/allgather-mvapich-smp.c
src/smpi/colls/allgather-rdb.c
src/smpi/colls/allgather-rhv.c
src/smpi/colls/allgather-ring.c
--- /dev/null
+#include "colls_private.h"
+
+
+
+int smpi_coll_tuned_allgather_mvapich2_smp(void *sendbuf,int sendcnt, MPI_Datatype sendtype,
+ void *recvbuf, int recvcnt,MPI_Datatype recvtype,
+ MPI_Comm comm)
+{
+ int rank, size;
+ int local_rank, local_size;
+ int leader_comm_size = 0;
+ int mpi_errno = MPI_SUCCESS;
+ MPI_Aint recvtype_extent = 0; /* Datatype extent */
+ MPI_Comm shmem_comm, leader_comm;
+
+ if(smpi_comm_get_leaders_comm(comm)==MPI_COMM_NULL){
+ smpi_comm_init_smp(comm);
+ }
+
+ if(!smpi_comm_is_uniform(comm) || !smpi_comm_is_blocked(comm))
+ THROWF(arg_error,0, "allgather MVAPICH2 smp algorithm can't be used with irregular deployment. Please insure that processes deployed on the same node are contiguous and that each node has the same number of processes");
+
+ if (recvcnt == 0) {
+ return MPI_SUCCESS;
+ }
+
+ rank = smpi_comm_rank(comm);
+ size = smpi_comm_size(comm);
+
+ /* extract the rank,size information for the intra-node
+ * communicator */
+ recvtype_extent=smpi_datatype_get_extent(recvtype);
+
+ shmem_comm = smpi_comm_get_intra_comm(comm);
+ local_rank = smpi_comm_rank(shmem_comm);
+ local_size = smpi_comm_size(shmem_comm);
+
+ if (local_rank == 0) {
+ /* Node leader. Extract the rank, size information for the leader
+ * communicator */
+ leader_comm = smpi_comm_get_leaders_comm(comm);
+ if(leader_comm==MPI_COMM_NULL){
+ leader_comm = MPI_COMM_WORLD;
+ }
+ leader_comm_size = smpi_comm_size(leader_comm);
+ }
+
+ /*If there is just one node, after gather itself,
+ * root has all the data and it can do bcast*/
+ if(local_rank == 0) {
+ mpi_errno = mpi_coll_gather_fun(sendbuf, sendcnt,sendtype,
+ (void*)((char*)recvbuf + (rank * recvcnt * recvtype_extent)),
+ recvcnt, recvtype,
+ 0, shmem_comm);
+ } else {
+ /*Since in allgather all the processes could have
+ * its own data in place*/
+ if(sendbuf == MPI_IN_PLACE) {
+ mpi_errno = mpi_coll_gather_fun((void*)((char*)recvbuf + (rank * recvcnt * recvtype_extent)),
+ recvcnt , recvtype,
+ recvbuf, recvcnt, recvtype,
+ 0, shmem_comm);
+ } else {
+ mpi_errno = mpi_coll_gather_fun(sendbuf, sendcnt,sendtype,
+ recvbuf, recvcnt, recvtype,
+ 0, shmem_comm);
+ }
+ }
+ /* Exchange the data between the node leaders*/
+ if (local_rank == 0 && (leader_comm_size > 1)) {
+ /*When data in each socket is different*/
+ if (smpi_comm_is_uniform(comm) != 1) {
+
+ int *displs = NULL;
+ int *recvcnts = NULL;
+ int *node_sizes = NULL;
+ int i = 0;
+
+ node_sizes = smpi_comm_get_non_uniform_map(comm);
+
+ displs = xbt_malloc(sizeof (int) * leader_comm_size);
+ recvcnts = xbt_malloc(sizeof (int) * leader_comm_size);
+ if (!displs || !recvcnts) {
+ return MPI_ERR_OTHER;
+ }
+ recvcnts[0] = node_sizes[0] * recvcnt;
+ displs[0] = 0;
+
+ for (i = 1; i < leader_comm_size; i++) {
+ displs[i] = displs[i - 1] + node_sizes[i - 1] * recvcnt;
+ recvcnts[i] = node_sizes[i] * recvcnt;
+ }
+
+
+ void* sendbuf=((char*)recvbuf)+smpi_datatype_get_extent(recvtype)*displs[smpi_comm_rank(leader_comm)];
+
+ mpi_errno = mpi_coll_allgatherv_fun(sendbuf,
+ (recvcnt*local_size),
+ recvtype,
+ recvbuf, recvcnts,
+ displs, recvtype,
+ leader_comm);
+ xbt_free(displs);
+ xbt_free(recvcnts);
+ } else {
+ void* sendtmpbuf=((char*)recvbuf)+smpi_datatype_get_extent(recvtype)*(recvcnt*local_size)*smpi_comm_rank(leader_comm);
+
+
+
+ mpi_errno = smpi_coll_tuned_allgather_mpich(sendtmpbuf,
+ (recvcnt*local_size),
+ recvtype,
+ recvbuf, (recvcnt*local_size), recvtype,
+ leader_comm);
+
+ }
+ }
+
+ /*Bcast the entire data from node leaders to all other cores*/
+ mpi_errno = mpi_coll_bcast_fun (recvbuf, recvcnt * size, recvtype, 0, shmem_comm);
+ return mpi_errno;
+}
COLL_APPLY(action, COLL_ALLGATHER_SIG, ompi) COLL_sep \
COLL_APPLY(action, COLL_ALLGATHER_SIG, ompi_neighborexchange) COLL_sep \
COLL_APPLY(action, COLL_ALLGATHER_SIG, mvapich2) COLL_sep \
+COLL_APPLY(action, COLL_ALLGATHER_SIG, mvapich2_smp) COLL_sep \
COLL_APPLY(action, COLL_ALLGATHER_SIG, mpich) COLL_sep \
COLL_APPLY(action, COLL_ALLGATHER_SIG, impi) COLL_sep \
COLL_APPLY(action, COLL_ALLGATHER_SIG, automatic)
int mpi_errno = MPI_SUCCESS;
int nbytes = 0, comm_size, recvtype_size;
int range = 0;
- //int partial_sub_ok = 0;
+ int partial_sub_ok = 0;
int conf_index = 0;
int range_threshold = 0;
int is_two_level = 0;
- //int local_size = -1;
- //MPI_Comm shmem_comm;
+ int local_size = -1;
+ MPI_Comm shmem_comm;
//MPI_Comm *shmem_commptr=NULL;
/* Get the size of the communicator */
comm_size = smpi_comm_size(comm);
if(mv2_allgather_table_ppn_conf==NULL)
init_mv2_allgather_tables_stampede();
+
+ if(smpi_comm_get_leaders_comm(comm)==MPI_COMM_NULL){
+ smpi_comm_init_smp(comm);
+ }
- //int i;
- /* check if safe to use partial subscription mode */
- /* if (comm->ch.shmem_coll_ok == 1 && comm->ch.is_uniform) {
-
- shmem_comm = comm->ch.shmem_comm;
- MPID_Comm_get_ptr(shmem_comm, shmem_commptr);
- local_size = shmem_commptr->local_size;
- i = 0;
- if (mv2_allgather_table_ppn_conf[0] == -1) {
- // Indicating user defined tuning
- conf_index = 0;
- goto conf_check_end;
- }
- do {
- if (local_size == mv2_allgather_table_ppn_conf[i]) {
- conf_index = i;
- partial_sub_ok = 1;
- break;
- }
- i++;
- } while(i < mv2_allgather_num_ppn_conf);
+ int i;
+ if (smpi_comm_is_uniform(comm)){
+ shmem_comm = smpi_comm_get_intra_comm(comm);
+ local_size = smpi_comm_size(shmem_comm);
+ i = 0;
+ if (mv2_allgather_table_ppn_conf[0] == -1) {
+ // Indicating user defined tuning
+ conf_index = 0;
+ goto conf_check_end;
}
-
+ do {
+ if (local_size == mv2_allgather_table_ppn_conf[i]) {
+ conf_index = i;
+ partial_sub_ok = 1;
+ break;
+ }
+ i++;
+ } while(i < mv2_allgather_num_ppn_conf);
+ }
conf_check_end:
- if (partial_sub_ok != 1) {
- conf_index = 0;
- }*/
+ if (partial_sub_ok != 1) {
+ conf_index = 0;
+ }
+
/* Search for the corresponding system size inside the tuning table */
while ((range < (mv2_size_allgather_tuning_table[conf_index] - 1)) &&
(comm_size >
/* intracommunicator */
if(is_two_level ==1){
-
- /* if(comm->ch.shmem_coll_ok == 1){
- MPIR_T_PVAR_COUNTER_INC(MV2, mv2_num_shmem_coll_calls, 1);
- if (1 == comm->ch.is_blocked) {
- mpi_errno = MPIR_2lvl_Allgather_MV2(sendbuf, sendcount, sendtype,
- recvbuf, recvcount, recvtype,
- comm, errflag);
- }
- else {
- mpi_errno = MPIR_Allgather_intra(sendbuf, sendcount, sendtype,
- recvbuf, recvcount, recvtype,
- comm, errflag);
- }
- } else {*/
+ if(partial_sub_ok ==1){
+ if (smpi_comm_is_blocked(comm)){
+ mpi_errno = MPIR_2lvl_Allgather_MV2(sendbuf, sendcount, sendtype,
+ recvbuf, recvcount, recvtype,
+ comm);
+ }else{
+ mpi_errno = smpi_coll_tuned_allgather_mpich(sendbuf, sendcount, sendtype,
+ recvbuf, recvcount, recvtype,
+ comm);
+ }
+ } else {
mpi_errno = MPIR_Allgather_RD_MV2(sendbuf, sendcount, sendtype,
recvbuf, recvcount, recvtype,
comm);
- // }
+ }
} else if(MV2_Allgather_function == &MPIR_Allgather_Bruck_MV2
|| MV2_Allgather_function == &MPIR_Allgather_RD_MV2
|| MV2_Allgather_function == &MPIR_Allgather_Ring_MV2) {
#define MPIR_Allgather_Bruck_MV2 smpi_coll_tuned_allgather_bruck
#define MPIR_Allgather_RD_MV2 smpi_coll_tuned_allgather_rdb
#define MPIR_Allgather_Ring_MV2 smpi_coll_tuned_allgather_ring
-
+#define MPIR_2lvl_Allgather_MV2 smpi_coll_tuned_allgather_mvapich2_smp
static void init_mv2_allgather_tables_stampede(){
int i;
