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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 University of Houston. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/group/group.h"
#include "ompi/constants.h"
#include "mpi.h"
#include "ompi/proc/proc.h"
int ompi_group_free ( ompi_group_t **group )
{
ompi_group_t *l_group;
l_group = (ompi_group_t *) *group;
ompi_group_decrement_proc_count (l_group);
OBJ_RELEASE(l_group);
*group = MPI_GROUP_NULL;
return OMPI_SUCCESS;
}
int ompi_group_translate_ranks ( ompi_group_t *group1,
int n_ranks, int *ranks1,
ompi_group_t *group2,
int *ranks2)
{
int rank, proc, proc2;
struct ompi_proc_t *proc1_pointer, *proc2_pointer;
if ( MPI_GROUP_EMPTY == group1 || MPI_GROUP_EMPTY == group2 ) {
for (proc = 0; proc < n_ranks ; proc++) {
ranks2[proc] = MPI_UNDEFINED;
}
return MPI_SUCCESS;
}
/* loop over all ranks */
for (proc = 0; proc < n_ranks; proc++) {
rank=ranks1[proc];
if ( MPI_PROC_NULL == rank) {
ranks2[proc] = MPI_PROC_NULL;
}
else {
proc1_pointer=group1->grp_proc_pointers[rank];
/* initialize to no "match" */
ranks2[proc] = MPI_UNDEFINED;
for (proc2 = 0; proc2 < group2->grp_proc_count; proc2++)
{
proc2_pointer=group2->grp_proc_pointers[proc2];
if ( proc1_pointer == proc2_pointer) {
ranks2[proc] = proc2;
break;
}
} /* end proc2 loop */
}
} /* end proc loop */
return MPI_SUCCESS;
}
int ompi_group_union (ompi_group_t* group1, ompi_group_t* group2, ompi_group_t **new_group)
{
/* local variables */
int new_group_size, proc1, proc2, found_in_group;
int my_group_rank, cnt;
ompi_group_t *group1_pointer, *group2_pointer, *new_group_pointer;
ompi_proc_t *proc1_pointer, *proc2_pointer, *my_proc_pointer = NULL;
group1_pointer = (ompi_group_t *) group1;
group2_pointer = (ompi_group_t *) group2;
/*
* form union
*/
/* get new group size */
new_group_size = group1_pointer->grp_proc_count;
/* check group2 elements to see if they need to be included in the list */
for (proc2 = 0; proc2 < group2_pointer->grp_proc_count; proc2++) {
proc2_pointer = group2_pointer->grp_proc_pointers[proc2];
/* check to see if this proc2 is alread in the group */
found_in_group = 0;
for (proc1 = 0; proc1 < group1_pointer->grp_proc_count; proc1++) {
proc1_pointer = group1_pointer->grp_proc_pointers[proc1];
if (proc1_pointer == proc2_pointer) {
/* proc2 is in group1 - don't double count */
found_in_group = 1;
break;
}
} /* end proc1 loop */
if (found_in_group)
continue;
new_group_size++;
} /* end proc loop */
if ( 0 == new_group_size ) {
*new_group = MPI_GROUP_EMPTY;
OBJ_RETAIN(MPI_GROUP_EMPTY);
return MPI_SUCCESS;
}
/* get new group struct */
new_group_pointer = ompi_group_allocate(new_group_size);
if (NULL == new_group_pointer) {
return MPI_ERR_GROUP;
}
/* fill in the new group list */
/* put group1 elements in the list */
for (proc1 = 0; proc1 < group1_pointer->grp_proc_count; proc1++) {
new_group_pointer->grp_proc_pointers[proc1] =
group1_pointer->grp_proc_pointers[proc1];
}
cnt = group1_pointer->grp_proc_count;
/* check group2 elements to see if they need to be included in the list */
for (proc2 = 0; proc2 < group2_pointer->grp_proc_count; proc2++) {
proc2_pointer = group2_pointer->grp_proc_pointers[proc2];
/* check to see if this proc2 is alread in the group */
found_in_group = 0;
for (proc1 = 0; proc1 < group1_pointer->grp_proc_count; proc1++) {
proc1_pointer = group1_pointer->grp_proc_pointers[proc1];
if (proc1_pointer == proc2_pointer) {
/* proc2 is in group1 - don't double count */
found_in_group = 1;
break;
}
} /* end proc1 loop */
if (found_in_group)
continue;
new_group_pointer->grp_proc_pointers[cnt] =
group2_pointer->grp_proc_pointers[proc2];
cnt++;
} /* end proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
/* find my rank */
my_group_rank = group1_pointer->grp_my_rank;
if (MPI_UNDEFINED == my_group_rank) {
my_group_rank = group2_pointer->grp_my_rank;
if ( MPI_UNDEFINED != my_group_rank) {
my_proc_pointer = group2_pointer->grp_proc_pointers[my_group_rank];
}
} else {
my_proc_pointer = group1_pointer->grp_proc_pointers[my_group_rank];
}
if ( MPI_UNDEFINED == my_group_rank ) {
new_group_pointer->grp_my_rank = MPI_UNDEFINED;
}
else {
ompi_set_group_rank(new_group_pointer, my_proc_pointer);
}
*new_group = (MPI_Group) new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_incl(ompi_group_t* group, int n, int *ranks, ompi_group_t **new_group)
{
/* local variables */
int proc,my_group_rank;
ompi_group_t *group_pointer, *new_group_pointer;
ompi_proc_t *my_proc_pointer;
group_pointer = (ompi_group_t *)group;
/* get new group struct */
new_group_pointer=ompi_group_allocate(n);
if( NULL == new_group_pointer ) {
return MPI_ERR_GROUP;
}
/* put group elements in the list */
for (proc = 0; proc < n; proc++) {
new_group_pointer->grp_proc_pointers[proc] =
group_pointer->grp_proc_pointers[ranks[proc]];
} /* end proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
/* find my rank */
my_group_rank=group_pointer->grp_my_rank;
my_proc_pointer=group_pointer->grp_proc_pointers[my_group_rank];
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_excl(ompi_group_t* group, int n, int *ranks,
ompi_group_t **new_group)
{
/* local variables */
int return_value,proc,i_excl,found,cnt,my_group_rank;
ompi_group_t *group_pointer, *new_group_pointer;
ompi_proc_t *my_proc_pointer;
return_value = MPI_SUCCESS;
group_pointer = (ompi_group_t *)group;
/*
* pull out elements
*/
/* get new group struct */
new_group_pointer=ompi_group_allocate(group_pointer->grp_proc_count-n);
if( NULL == new_group_pointer ) {
return MPI_ERR_GROUP;
}
/* put group elements in the list */
cnt=0;
for (proc = 0; proc < group_pointer->grp_proc_count; proc++) {
found=0;
/* check to see if this proc is in the exclusion list */
for( i_excl=0 ; i_excl < n ; ++i_excl ) {
if ( ranks[i_excl] == proc ){
found=1;
break;
}
} /* end i_excl loop */
if( !found ) {
new_group_pointer->grp_proc_pointers[cnt] =
group_pointer->grp_proc_pointers[proc];
cnt++;
}
} /* end proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
/* find my rank */
my_group_rank=group_pointer->grp_my_rank;
my_proc_pointer=group_pointer->grp_proc_pointers[my_group_rank];
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_range_incl(ompi_group_t* group, int n_triplets, int ranges[][3],
ompi_group_t **new_group)
{
/* local variables */
int new_group_size, proc, first_rank, last_rank;
int stride, triplet, index, *elements_int_list, my_group_rank;
ompi_group_t *group_pointer, *new_group_pointer;
ompi_proc_t *my_proc_pointer;
group_pointer=(ompi_group_t *)group;
/*
* pull out elements
*/
elements_int_list =
(int *) malloc(sizeof(int) * group_pointer->grp_proc_count);
if (NULL == elements_int_list) {
return MPI_ERR_OTHER;
}
for (proc = 0; proc < group_pointer->grp_proc_count; proc++) {
elements_int_list[proc] = -1;
}
/* loop over triplet */
new_group_size = 0;
for (triplet = 0; triplet < n_triplets; triplet++)
{
first_rank = ranges[triplet][0];
last_rank = ranges[triplet][1];
stride = ranges[triplet][2];
if (first_rank < last_rank) {
/* positive stride */
index = first_rank;
while (index <= last_rank) {
elements_int_list[index] = new_group_size;
index += stride;
new_group_size++;
} /* end while loop */
}
else if (first_rank > last_rank) {
/* negative stride */
index = first_rank;
while (index >= last_rank) {
elements_int_list[index] = new_group_size;
index += stride;
new_group_size++;
} /* end while loop */
} else { /* first_rank == last_rank */
index = first_rank;
elements_int_list[index] = new_group_size;
new_group_size++;
}
}
if ( 0 == new_group_size ) {
*new_group = MPI_GROUP_EMPTY;
OBJ_RETAIN(MPI_GROUP_EMPTY);
return MPI_SUCCESS;
}
/* allocate a new ompi_group_t structure */
new_group_pointer=ompi_group_allocate(new_group_size);
if( NULL == new_group_pointer ) {
free(elements_int_list);
return MPI_ERR_GROUP;
}
/* fill in group list */
for (proc = 0; proc < group_pointer->grp_proc_count; proc++) {
/* if value >= 0, include in the list */
if (0 <= elements_int_list[proc] ) {
new_group_pointer->grp_proc_pointers[elements_int_list[proc]] =
group_pointer->grp_proc_pointers[proc];
}
} /* end of proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
free(elements_int_list);
/* find my rank */
my_group_rank=group_pointer->grp_my_rank;
my_proc_pointer=group_pointer->grp_proc_pointers[my_group_rank];
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_range_excl(ompi_group_t* group, int n_triplets, int ranges[][3],
ompi_group_t **new_group)
{
/* local variables */
int new_group_size, proc, first_rank, last_rank;
int stride, triplet, index, *elements_int_list, my_group_rank;
ompi_group_t *group_pointer, *new_group_pointer;
ompi_proc_t *my_proc_pointer;
group_pointer=(ompi_group_t *)group;
/*
* pull out elements
*/
elements_int_list = (int *)
malloc(sizeof(int) * group_pointer->grp_proc_count);
if (NULL == elements_int_list) {
return MPI_ERR_OTHER;
}
for (proc = 0; proc < group_pointer->grp_proc_count; proc++) {
elements_int_list[proc] = -1;
}
/* loop over triplet */
new_group_size = 0;
for (triplet = 0; triplet < n_triplets; triplet++) {
first_rank = ranges[triplet][0];
last_rank = ranges[triplet][1];
stride = ranges[triplet][2];
if (first_rank < last_rank) {
/* positive stride */
for (index = first_rank; index <= last_rank; index += stride) {
elements_int_list[index] = new_group_size;
new_group_size++;
}
} else if (first_rank > last_rank) {
/* negative stride */
for (index = first_rank; index >= last_rank; index += stride) {
elements_int_list[index] = new_group_size;
new_group_size++;
}
} else {
/* first_rank == last_rank */
index = first_rank;
elements_int_list[index] = new_group_size;
new_group_size++;
}
} /* end triplet loop */
/* we have counted the procs to exclude from the list */
new_group_size=group_pointer->grp_proc_count-new_group_size;
if ( 0 == new_group_size ) {
*new_group = MPI_GROUP_EMPTY;
OBJ_RETAIN(MPI_GROUP_EMPTY);
return MPI_SUCCESS;
}
/* allocate a new ompi_group_t structure */
new_group_pointer=ompi_group_allocate(new_group_size);
if( NULL == new_group_pointer ) {
free(elements_int_list);
return MPI_ERR_GROUP;
}
/* fill in group list */
index=0;
for (proc = 0; proc < group_pointer->grp_proc_count; proc++) {
/* if value == -1, include in the list */
if (0 > elements_int_list[proc] ) {
new_group_pointer->grp_proc_pointers[index] =
group_pointer->grp_proc_pointers[proc];
index++;
}
} /* end of proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
free(elements_int_list);
/* find my rank */
my_group_rank=group_pointer->grp_my_rank;
my_proc_pointer=group_pointer->grp_proc_pointers[my_group_rank];
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_intersection(ompi_group_t* group1,ompi_group_t* group2,
ompi_group_t **new_group)
{
/* local variables */
int my_group_rank;
int group_size,proc1,proc2,cnt;
ompi_group_t *group1_pointer, *group2_pointer, *new_group_pointer;
ompi_proc_t *proc1_pointer, *proc2_pointer, *my_proc_pointer = NULL;
group1_pointer=(ompi_group_t *)group1;
group2_pointer=(ompi_group_t *)group2;
/*
* form intersection
*/
/* figure out how large the intersection is */
group_size = 0;
/* loop over group1 members */
for (proc1 = 0; proc1 < group1_pointer->grp_proc_count; proc1++) {
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
/* check to see if this proc is in group2 */
for (proc2 = 0; proc2 < group2_pointer->grp_proc_count; proc2++) {
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
if( proc1_pointer == proc2_pointer ) {
group_size++;
break;
}
} /* end proc2 loop */
} /* end proc1 loop */
if ( 0 == group_size ) {
*new_group = MPI_GROUP_EMPTY;
OBJ_RETAIN(MPI_GROUP_EMPTY);
return MPI_SUCCESS;
}
/* fill in new group */
new_group_pointer=ompi_group_allocate(group_size);
if( NULL == new_group_pointer ) {
return MPI_ERR_GROUP;
}
cnt = 0;
/* loop over group1 members */
for (proc1 = 0; proc1 < group1_pointer->grp_proc_count; proc1++) {
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
/* check to see if this proc is in group2 */
for (proc2 = 0; proc2 < group2_pointer->grp_proc_count; proc2++) {
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
if( proc1_pointer == proc2_pointer ) {
new_group_pointer->grp_proc_pointers[cnt]=proc1_pointer;
cnt++;
break;
}
} /* end proc2 loop */
} /* end proc1 loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
/* find my rank */
my_group_rank=group1_pointer->grp_my_rank;
if ( MPI_UNDEFINED != my_group_rank ) {
my_proc_pointer=group1_pointer->grp_proc_pointers[my_group_rank];
}
else {
my_group_rank=group2_pointer->grp_my_rank;
if ( MPI_UNDEFINED != my_group_rank ) {
my_proc_pointer=group2_pointer->grp_proc_pointers[my_group_rank];
}
}
if ( MPI_UNDEFINED == my_group_rank ) {
new_group_pointer->grp_my_rank = MPI_UNDEFINED;
}
else {
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
}
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
int ompi_group_difference(ompi_group_t* group1, ompi_group_t* group2,
ompi_group_t **new_group) {
/* local varibles */
int new_group_size, proc1, proc2, found_in_group2, cnt;
int my_group_rank;
ompi_group_t *group1_pointer, *group2_pointer, *new_group_pointer;
ompi_proc_t *proc1_pointer, *proc2_pointer, *my_proc_pointer = NULL;
group1_pointer=(ompi_group_t *)group1;
group2_pointer=(ompi_group_t *)group2;
/*
* form union
*/
/* get new group size */
new_group_size=0;
/* loop over group1 members */
for( proc1=0; proc1 < group1_pointer->grp_proc_count; proc1++ ) {
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
/* check to see if this proc is in group2 */
found_in_group2=0;
for( proc2=0 ; proc2 < group2_pointer->grp_proc_count ; proc2++ ) {
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
if( proc1_pointer == proc2_pointer ) {
found_in_group2=true;
break;
}
} /* end proc1 loop */
if(found_in_group2)
continue;
new_group_size++;
} /* end proc loop */
if ( 0 == new_group_size ) {
*new_group = MPI_GROUP_EMPTY;
OBJ_RETAIN(MPI_GROUP_EMPTY);
return MPI_SUCCESS;
}
/* allocate a new ompi_group_t structure */
new_group_pointer=ompi_group_allocate(new_group_size);
if( NULL == new_group_pointer ) {
return MPI_ERR_GROUP;
}
/* fill in group list */
cnt=0;
/* loop over group1 members */
for( proc1=0; proc1 < group1_pointer->grp_proc_count; proc1++ ) {
proc1_pointer=group1_pointer->grp_proc_pointers[proc1];
/* check to see if this proc is in group2 */
found_in_group2=0;
for( proc2=0 ; proc2 < group2_pointer->grp_proc_count ; proc2++ ) {
proc2_pointer=group2_pointer->grp_proc_pointers[proc2];
if( proc1_pointer == proc2_pointer ) {
found_in_group2=true;
break;
}
} /* end proc1 loop */
if(found_in_group2)
continue;
new_group_pointer->grp_proc_pointers[cnt] =
group1_pointer->grp_proc_pointers[proc1];
cnt++;
} /* end proc loop */
/* increment proc reference counters */
ompi_group_increment_proc_count(new_group_pointer);
/* find my rank */
my_group_rank=group1_pointer->grp_my_rank;
if ( MPI_UNDEFINED != my_group_rank ) {
my_proc_pointer=group1_pointer->grp_proc_pointers[my_group_rank];
}
else {
my_group_rank=group2_pointer->grp_my_rank;
if ( MPI_UNDEFINED != my_group_rank ) {
my_proc_pointer=group2_pointer->grp_proc_pointers[my_group_rank];
}
}
if ( MPI_UNDEFINED == my_group_rank ) {
new_group_pointer->grp_my_rank = MPI_UNDEFINED;
}
else {
ompi_set_group_rank(new_group_pointer,my_proc_pointer);
}
*new_group = (MPI_Group)new_group_pointer;
return OMPI_SUCCESS;
}
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