int MPIDI_Win_free(MPID_Win **win_ptr)
{
int mpi_errno=MPI_SUCCESS, total_pt_rma_puts_accs;
int in_use;
MPID_Comm *comm_ptr;
int errflag = FALSE;
MPIDI_STATE_DECL(MPID_STATE_MPIDI_WIN_FREE);
MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_WIN_FREE);
comm_ptr = (*win_ptr)->comm_ptr;
MPIU_INSTR_DURATION_START(winfree_rs);
mpi_errno = MPIR_Reduce_scatter_block_impl((*win_ptr)->pt_rma_puts_accs,
&total_pt_rma_puts_accs, 1,
MPI_INT, MPI_SUM, comm_ptr, &errflag);
if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }
MPIU_ERR_CHKANDJUMP(errflag, mpi_errno, MPI_ERR_OTHER, "**coll_fail");
MPIU_INSTR_DURATION_END(winfree_rs);
if (total_pt_rma_puts_accs != (*win_ptr)->my_pt_rma_puts_accs)
{
MPID_Progress_state progress_state;
/* poke the progress engine until the two are equal */
MPIU_INSTR_DURATION_START(winfree_complete);
MPID_Progress_start(&progress_state);
while (total_pt_rma_puts_accs != (*win_ptr)->my_pt_rma_puts_accs)
{
mpi_errno = MPID_Progress_wait(&progress_state);
/* --BEGIN ERROR HANDLING-- */
if (mpi_errno != MPI_SUCCESS)
{
MPID_Progress_end(&progress_state);
MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**winnoprogress");
}
/* --END ERROR HANDLING-- */
}
MPID_Progress_end(&progress_state);
MPIU_INSTR_DURATION_END(winfree_complete);
}
mpi_errno = MPIR_Comm_free_impl(comm_ptr);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIU_Free((*win_ptr)->base_addrs);
MPIU_Free((*win_ptr)->disp_units);
MPIU_Free((*win_ptr)->all_win_handles);
MPIU_Free((*win_ptr)->pt_rma_puts_accs);
MPIU_Object_release_ref(*win_ptr, &in_use);
/* MPI windows don't have reference count semantics, so this should always be true */
MPIU_Assert(!in_use);
MPIU_Handle_obj_free( &MPID_Win_mem, *win_ptr );
fn_exit:
MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_WIN_FREE);
return mpi_errno;
fn_fail:
goto fn_exit;
}
/*@
MPI_Dist_graph_create - MPI_DIST_GRAPH_CREATE returns a handle to a new
communicator to which the distributed graph topology information is
attached.
Input Parameters:
+ comm_old - input communicator (handle)
. n - number of source nodes for which this process specifies edges
(non-negative integer)
. sources - array containing the n source nodes for which this process
specifies edges (array of non-negative integers)
. degrees - array specifying the number of destinations for each source node
in the source node array (array of non-negative integers)
. destinations - destination nodes for the source nodes in the source node
array (array of non-negative integers)
. weights - weights for source to destination edges (array of non-negative
integers or MPI_UNWEIGHTED)
. info - hints on optimization and interpretation of weights (handle)
- reorder - the process may be reordered (true) or not (false) (logical)
Output Parameters:
. comm_dist_graph - communicator with distributed graph topology added (handle)
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_OTHER
@*/
int MPI_Dist_graph_create(MPI_Comm comm_old, int n, const int sources[],
const int degrees[], const int destinations[],
const int weights[],
MPI_Info info, int reorder, MPI_Comm *comm_dist_graph)
{
int mpi_errno = MPI_SUCCESS;
MPID_Comm *comm_ptr = NULL;
MPID_Comm *comm_dist_graph_ptr = NULL;
MPI_Request *reqs = NULL;
MPIR_Topology *topo_ptr = NULL;
MPIR_Dist_graph_topology *dist_graph_ptr = NULL;
int i;
int j;
int idx;
int comm_size = 0;
int in_capacity;
int out_capacity;
int **rout = NULL;
int **rin = NULL;
int *rin_sizes;
int *rout_sizes;
int *rin_idx;
int *rout_idx;
int *rs;
int in_out_peers[2] = {-1, -1};
int errflag = FALSE;
MPIU_CHKLMEM_DECL(9);
MPIU_CHKPMEM_DECL(1);
MPID_MPI_STATE_DECL(MPID_STATE_MPI_DIST_GRAPH_CREATE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPIU_THREAD_CS_ENTER(ALLFUNC,);
MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_DIST_GRAPH_CREATE);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm_old, mpi_errno);
MPIR_ERRTEST_INFO_OR_NULL(info, mpi_errno);
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif
/* Convert MPI object handles to object pointers */
MPID_Comm_get_ptr(comm_old, comm_ptr);
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
/* Validate comm_ptr */
MPID_Comm_valid_ptr(comm_ptr, mpi_errno);
/* If comm_ptr is not valid, it will be reset to null */
if (comm_ptr) {
MPIR_ERRTEST_COMM_INTRA(comm_ptr, mpi_errno);
}
MPIR_ERRTEST_ARGNEG(n, "n", mpi_errno);
if (n > 0) {
int have_degrees = 0;
MPIR_ERRTEST_ARGNULL(sources, "sources", mpi_errno);
MPIR_ERRTEST_ARGNULL(degrees, "degrees", mpi_errno);
for (i = 0; i < n; ++i) {
if (degrees[i]) {
have_degrees = 1;
break;
}
}
if (have_degrees) {
MPIR_ERRTEST_ARGNULL(destinations, "destinations", mpi_errno);
if (weights != MPI_UNWEIGHTED)
MPIR_ERRTEST_ARGNULL(weights, "weights", mpi_errno);
}
}
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
/* Implementation based on Torsten Hoefler's reference implementation
* attached to MPI-2.2 ticket #33. */
*comm_dist_graph = MPI_COMM_NULL;
comm_size = comm_ptr->local_size;
/* following the spirit of the old topo interface, attributes do not
* propagate to the new communicator (see MPI-2.1 pp. 243 line 11) */
mpi_errno = MPIR_Comm_copy(comm_ptr, comm_size, &comm_dist_graph_ptr);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIU_Assert(comm_dist_graph_ptr != NULL);
/* rin is an array of size comm_size containing pointers to arrays of
* rin_sizes[x]. rin[x] is locally known number of edges into this process
* from rank x.
*
* rout is an array of comm_size containing pointers to arrays of
* rout_sizes[x]. rout[x] is the locally known number of edges out of this
* process to rank x. */
MPIU_CHKLMEM_MALLOC(rout, int **, comm_size*sizeof(int*), mpi_errno, "rout");
MPIU_CHKLMEM_MALLOC(rin, int **, comm_size*sizeof(int*), mpi_errno, "rin");
MPIU_CHKLMEM_MALLOC(rin_sizes, int *, comm_size*sizeof(int), mpi_errno, "rin_sizes");
MPIU_CHKLMEM_MALLOC(rout_sizes, int *, comm_size*sizeof(int), mpi_errno, "rout_sizes");
MPIU_CHKLMEM_MALLOC(rin_idx, int *, comm_size*sizeof(int), mpi_errno, "rin_idx");
MPIU_CHKLMEM_MALLOC(rout_idx, int *, comm_size*sizeof(int), mpi_errno, "rout_idx");
memset(rout, 0, comm_size*sizeof(int*));
memset(rin, 0, comm_size*sizeof(int*));
memset(rin_sizes, 0, comm_size*sizeof(int));
memset(rout_sizes, 0, comm_size*sizeof(int));
memset(rin_idx, 0, comm_size*sizeof(int));
memset(rout_idx, 0, comm_size*sizeof(int));
/* compute array sizes */
idx = 0;
for (i = 0; i < n; ++i) {
MPIU_Assert(sources[i] < comm_size);
for (j = 0; j < degrees[i]; ++j) {
MPIU_Assert(destinations[idx] < comm_size);
/* rout_sizes[i] is twice as long as the number of edges to be
* sent to rank i by this process */
rout_sizes[sources[i]] += 2;
rin_sizes[destinations[idx]] += 2;
++idx;
}
}
/* allocate arrays */
for (i = 0; i < comm_size; ++i) {
/* can't use CHKLMEM macros b/c we are in a loop */
if (rin_sizes[i]) {
rin[i] = MPIU_Malloc(rin_sizes[i] * sizeof(int));
}
if (rout_sizes[i]) {
rout[i] = MPIU_Malloc(rout_sizes[i] * sizeof(int));
}
}
/* populate arrays */
idx = 0;
for (i = 0; i < n; ++i) {
/* TODO add this assert as proper error checking above */
int s_rank = sources[i];
MPIU_Assert(s_rank < comm_size);
MPIU_Assert(s_rank >= 0);
for (j = 0; j < degrees[i]; ++j) {
int d_rank = destinations[idx];
int weight = (weights == MPI_UNWEIGHTED ? 0 : weights[idx]);
/* TODO add this assert as proper error checking above */
MPIU_Assert(d_rank < comm_size);
MPIU_Assert(d_rank >= 0);
/* XXX DJG what about self-edges? do we need to drop one of these
* cases when there is a self-edge to avoid double-counting? */
/* rout[s][2*x] is the value of d for the j'th edge between (s,d)
* with weight rout[s][2*x+1], where x is the current end of the
* outgoing edge list for s. x==(rout_idx[s]/2) */
rout[s_rank][rout_idx[s_rank]++] = d_rank;
rout[s_rank][rout_idx[s_rank]++] = weight;
/* rin[d][2*x] is the value of s for the j'th edge between (s,d)
* with weight rout[d][2*x+1], where x is the current end of the
* incoming edge list for d. x==(rin_idx[d]/2) */
rin[d_rank][rin_idx[d_rank]++] = s_rank;
rin[d_rank][rin_idx[d_rank]++] = weight;
++idx;
}
}
for (i = 0; i < comm_size; ++i) {
/* sanity check that all arrays are fully populated*/
MPIU_Assert(rin_idx[i] == rin_sizes[i]);
MPIU_Assert(rout_idx[i] == rout_sizes[i]);
}
MPIU_CHKLMEM_MALLOC(rs, int *, 2*comm_size*sizeof(int), mpi_errno, "red-scat source buffer");
for (i = 0; i < comm_size; ++i) {
rs[2*i] = (rin_sizes[i] ? 1 : 0);
rs[2*i+1] = (rout_sizes[i] ? 1 : 0);
}
/* compute the number of peers I will recv from */
mpi_errno = MPIR_Reduce_scatter_block_impl(rs, in_out_peers, 2, MPI_INT, MPI_SUM, comm_ptr, &errflag);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIU_ERR_CHKANDJUMP(errflag, mpi_errno, MPI_ERR_OTHER, "**coll_fail");
MPIU_Assert(in_out_peers[0] <= comm_size && in_out_peers[0] >= 0);
MPIU_Assert(in_out_peers[1] <= comm_size && in_out_peers[1] >= 0);
idx = 0;
/* must be 2*comm_size requests because we will possibly send inbound and
* outbound edges to everyone in our communicator */
MPIU_CHKLMEM_MALLOC(reqs, MPI_Request *, 2*comm_size*sizeof(MPI_Request), mpi_errno, "temp request array");
for (i = 0; i < comm_size; ++i) {
if (rin_sizes[i]) {
/* send edges where i is a destination to process i */
mpi_errno = MPIC_Isend(&rin[i][0], rin_sizes[i], MPI_INT, i, MPIR_TOPO_A_TAG, comm_old, &reqs[idx++]);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
}
if (rout_sizes[i]) {
/* send edges where i is a source to process i */
mpi_errno = MPIC_Isend(&rout[i][0], rout_sizes[i], MPI_INT, i, MPIR_TOPO_B_TAG, comm_old, &reqs[idx++]);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
}
}
MPIU_Assert(idx <= (2 * comm_size));
/* Create the topology structure */
MPIU_CHKPMEM_MALLOC(topo_ptr, MPIR_Topology *, sizeof(MPIR_Topology), mpi_errno, "topo_ptr");
topo_ptr->kind = MPI_DIST_GRAPH;
dist_graph_ptr = &topo_ptr->topo.dist_graph;
dist_graph_ptr->indegree = 0;
dist_graph_ptr->in = NULL;
dist_graph_ptr->in_weights = NULL;
dist_graph_ptr->outdegree = 0;
dist_graph_ptr->out = NULL;
dist_graph_ptr->out_weights = NULL;
dist_graph_ptr->is_weighted = (weights != MPI_UNWEIGHTED);
/* can't use CHKPMEM macros for this b/c we need to realloc */
in_capacity = 10; /* arbitrary */
dist_graph_ptr->in = MPIU_Malloc(in_capacity*sizeof(int));
if (dist_graph_ptr->is_weighted)
dist_graph_ptr->in_weights = MPIU_Malloc(in_capacity*sizeof(int));
out_capacity = 10; /* arbitrary */
dist_graph_ptr->out = MPIU_Malloc(out_capacity*sizeof(int));
if (dist_graph_ptr->is_weighted)
dist_graph_ptr->out_weights = MPIU_Malloc(out_capacity*sizeof(int));
for (i = 0; i < in_out_peers[0]; ++i) {
MPI_Status status;
int count;
int *buf;
/* receive inbound edges */
mpi_errno = MPIC_Probe(MPI_ANY_SOURCE, MPIR_TOPO_A_TAG, comm_old, &status);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIR_Get_count_impl(&status, MPI_INT, &count);
/* can't use CHKLMEM macros b/c we are in a loop */
buf = MPIU_Malloc(count*sizeof(int));
MPIU_ERR_CHKANDJUMP(!buf, mpi_errno, MPIR_ERR_RECOVERABLE, "**nomem");
mpi_errno = MPIC_Recv(buf, count, MPI_INT, MPI_ANY_SOURCE, MPIR_TOPO_A_TAG, comm_old, MPI_STATUS_IGNORE);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
for (j = 0; j < count/2; ++j) {
int deg = dist_graph_ptr->indegree++;
if (deg >= in_capacity) {
in_capacity *= 2;
MPIU_REALLOC_ORJUMP(dist_graph_ptr->in, in_capacity*sizeof(int), mpi_errno);
if (dist_graph_ptr->is_weighted)
MPIU_REALLOC_ORJUMP(dist_graph_ptr->in_weights, in_capacity*sizeof(int), mpi_errno);
}
dist_graph_ptr->in[deg] = buf[2*j];
if (dist_graph_ptr->is_weighted)
dist_graph_ptr->in_weights[deg] = buf[2*j+1];
}
MPIU_Free(buf);
}
for (i = 0; i < in_out_peers[1]; ++i) {
MPI_Status status;
int count;
int *buf;
/* receive outbound edges */
mpi_errno = MPIC_Probe(MPI_ANY_SOURCE, MPIR_TOPO_B_TAG, comm_old, &status);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIR_Get_count_impl(&status, MPI_INT, &count);
/* can't use CHKLMEM macros b/c we are in a loop */
buf = MPIU_Malloc(count*sizeof(int));
MPIU_ERR_CHKANDJUMP(!buf, mpi_errno, MPIR_ERR_RECOVERABLE, "**nomem");
mpi_errno = MPIC_Recv(buf, count, MPI_INT, MPI_ANY_SOURCE, MPIR_TOPO_B_TAG, comm_old, MPI_STATUS_IGNORE);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
for (j = 0; j < count/2; ++j) {
int deg = dist_graph_ptr->outdegree++;
if (deg >= out_capacity) {
out_capacity *= 2;
MPIU_REALLOC_ORJUMP(dist_graph_ptr->out, out_capacity*sizeof(int), mpi_errno);
if (dist_graph_ptr->is_weighted)
MPIU_REALLOC_ORJUMP(dist_graph_ptr->out_weights, out_capacity*sizeof(int), mpi_errno);
}
dist_graph_ptr->out[deg] = buf[2*j];
if (dist_graph_ptr->is_weighted)
dist_graph_ptr->out_weights[deg] = buf[2*j+1];
}
MPIU_Free(buf);
}
mpi_errno = MPIR_Waitall_impl(idx, reqs, MPI_STATUSES_IGNORE);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
/* remove any excess memory allocation */
MPIU_REALLOC_ORJUMP(dist_graph_ptr->in, dist_graph_ptr->indegree*sizeof(int), mpi_errno);
MPIU_REALLOC_ORJUMP(dist_graph_ptr->out, dist_graph_ptr->outdegree*sizeof(int), mpi_errno);
if (dist_graph_ptr->is_weighted) {
MPIU_REALLOC_ORJUMP(dist_graph_ptr->in_weights, dist_graph_ptr->indegree*sizeof(int), mpi_errno);
MPIU_REALLOC_ORJUMP(dist_graph_ptr->out_weights, dist_graph_ptr->outdegree*sizeof(int), mpi_errno);
}
mpi_errno = MPIR_Topology_put(comm_dist_graph_ptr, topo_ptr);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
MPIU_CHKPMEM_COMMIT();
MPIU_OBJ_PUBLISH_HANDLE(*comm_dist_graph, comm_dist_graph_ptr->handle);
/* ... end of body of routine ... */
fn_exit:
for (i = 0; i < comm_size; ++i) {
if (rin[i])
MPIU_Free(rin[i]);
if (rout[i])
MPIU_Free(rout[i]);
}
MPIU_CHKLMEM_FREEALL();
MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_DIST_GRAPH_CREATE);
MPIU_THREAD_CS_EXIT(ALLFUNC,);
return mpi_errno;
/* --BEGIN ERROR HANDLING-- */
fn_fail:
if (dist_graph_ptr && dist_graph_ptr->in)
MPIU_Free(dist_graph_ptr->in);
if (dist_graph_ptr && dist_graph_ptr->in_weights)
MPIU_Free(dist_graph_ptr->in_weights);
if (dist_graph_ptr && dist_graph_ptr->out)
MPIU_Free(dist_graph_ptr->out);
if (dist_graph_ptr && dist_graph_ptr->out_weights)
MPIU_Free(dist_graph_ptr->out_weights);
MPIU_CHKPMEM_REAP();
#ifdef HAVE_ERROR_CHECKING
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_dist_graph_create", "**mpi_dist_graph_create %C %d %p %p %p %p %I %d %p",
comm_old, n, sources, degrees, destinations, weights, info, reorder, comm_dist_graph);
#endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}
