/*@
MPI_Igather - Gathers together values from a group of processes in
a nonblocking way
Input Parameters:
+ sendbuf - starting address of the send buffer (choice)
. sendcount - number of elements in send buffer (non-negative integer)
. sendtype - data type of send buffer elements (handle)
. recvcount - number of elements for any single receive (non-negative integer, significant only at root)
. recvtype - data type of receive buffer elements (significant only at root) (handle)
. root - rank of receiving process (integer)
- comm - communicator (handle)
Output Parameters:
+ recvbuf - starting address of the receive buffer (significant only at root) (choice)
- request - communication request (handle)
.N ThreadSafe
.N Fortran
.N Errors
@*/
int MPI_Igather(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, int recvcount, MPI_Datatype recvtype,
int root, MPI_Comm comm, MPI_Request * request)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_Request *request_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_IGATHER);
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_IGATHER);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr(comm, comm_ptr);
/* Validate parameters and objects (post conversion) */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Datatype *sendtype_ptr = NULL, *recvtype_ptr = NULL;
int rank;
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTRACOMM) {
MPIR_ERRTEST_INTRA_ROOT(comm_ptr, root, mpi_errno);
if (sendbuf != MPI_IN_PLACE) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(sendtype, sendtype_ptr);
MPIR_Datatype_valid_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_USERBUFFER(sendbuf, sendcount, sendtype, mpi_errno);
}
rank = comm_ptr->rank;
if (rank == root) {
MPIR_ERRTEST_COUNT(recvcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(recvtype, recvtype_ptr);
MPIR_Datatype_valid_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcount, mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf, recvcount, recvtype, mpi_errno);
/* catch common aliasing cases */
if (recvbuf != MPI_IN_PLACE && sendtype == recvtype && sendcount == recvcount &&
sendcount != 0) {
MPI_Aint recvtype_size;
MPIR_Datatype_get_size_macro(recvtype, recvtype_size);
MPIR_ERRTEST_ALIAS_COLL(sendbuf,
(char *) recvbuf +
comm_ptr->rank * recvcount * recvtype_size,
mpi_errno);
}
} else
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
}
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTERCOMM) {
MPIR_ERRTEST_INTER_ROOT(comm_ptr, root, mpi_errno);
if (root == MPI_ROOT) {
MPIR_ERRTEST_COUNT(recvcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(recvtype, recvtype_ptr);
MPIR_Datatype_valid_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcount, mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf, recvcount, recvtype, mpi_errno);
}
else if (root != MPI_PROC_NULL) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(sendtype, sendtype_ptr);
MPIR_Datatype_valid_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
MPIR_ERRTEST_USERBUFFER(sendbuf, sendcount, sendtype, mpi_errno);
}
}
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Igather(sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype,
root, comm_ptr, &request_ptr);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
/* create a complete request, if needed */
if (!request_ptr)
request_ptr = MPIR_Request_create_complete(MPIR_REQUEST_KIND__COLL);
/* return the handle of the request to the user */
*request = request_ptr->handle;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_IGATHER);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
#ifdef HAVE_ERROR_CHECKING
{
mpi_errno =
MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, __func__, __LINE__, MPI_ERR_OTHER,
"**mpi_igather", "**mpi_igather %p %d %D %p %d %D %d %C %p",
sendbuf, sendcount, sendtype, recvbuf, recvcount, recvtype, root,
comm, request);
}
#endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, __func__, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}
/*@
MPI_Igatherv - XXX description here
Input Parameters:
+ sendbuf - starting address of the send buffer (choice)
. sendcount - number of elements in send buffer (non-negative integer)
. sendtype - data type of send buffer elements (handle)
. recvcounts - non-negative integer array (of length group size) containing the number of elements that are received from each process (significant only at root)
. displs - integer array (of length group size). Entry i specifies the displacement relative to recvbuf at which to place the incoming data from process i (significant only at root)
. recvtype - data type of receive buffer elements (significant only at root) (handle)
. root - rank of receiving process (integer)
- comm - communicator (handle)
Output Parameters:
+ recvbuf - starting address of the receive buffer (significant only at root) (choice)
- request - communication request (handle)
.N ThreadSafe
.N Fortran
.N Errors
@*/
int MPI_Igatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf,
const int recvcounts[], const int displs[], MPI_Datatype recvtype, int root,
MPI_Comm comm, MPI_Request *request)
{
int mpi_errno = MPI_SUCCESS;
MPID_Comm *comm_ptr = NULL;
MPID_MPI_STATE_DECL(MPID_STATE_MPI_IGATHERV);
MPIU_THREAD_CS_ENTER(ALLFUNC,);
MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_IGATHERV);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
/* TODO more checks may be appropriate */
}
MPID_END_ERROR_CHECKS
}
# endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPID_Comm_get_ptr(comm, comm_ptr);
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS
{
MPID_Datatype *sendtype_ptr=NULL, *recvtype_ptr=NULL;
int i, rank, comm_size;
MPID_Comm_valid_ptr( comm_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
if (comm_ptr->comm_kind == MPID_INTRACOMM) {
MPIR_ERRTEST_INTRA_ROOT(comm_ptr, root, mpi_errno);
if (sendbuf != MPI_IN_PLACE) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPID_Datatype_get_ptr(sendtype, sendtype_ptr);
MPID_Datatype_valid_ptr( sendtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPID_Datatype_committed_ptr( sendtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPIR_ERRTEST_USERBUFFER(sendbuf,sendcount,sendtype,mpi_errno);
}
rank = comm_ptr->rank;
if (rank == root) {
comm_size = comm_ptr->local_size;
for (i=0; i<comm_size; i++) {
MPIR_ERRTEST_COUNT(recvcounts[i], mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
}
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPID_Datatype_get_ptr(recvtype, recvtype_ptr);
MPID_Datatype_valid_ptr( recvtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPID_Datatype_committed_ptr( recvtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
for (i=0; i<comm_size; i++) {
if (recvcounts[i] > 0) {
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcounts[i], mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf,recvcounts[i],recvtype,mpi_errno);
break;
}
}
}
else
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
}
if (comm_ptr->comm_kind == MPID_INTERCOMM) {
MPIR_ERRTEST_INTER_ROOT(comm_ptr, root, mpi_errno);
if (root == MPI_ROOT) {
comm_size = comm_ptr->remote_size;
for (i=0; i<comm_size; i++) {
MPIR_ERRTEST_COUNT(recvcounts[i], mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
}
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPID_Datatype_get_ptr(recvtype, recvtype_ptr);
MPID_Datatype_valid_ptr( recvtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPID_Datatype_committed_ptr( recvtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
for (i=0; i<comm_size; i++) {
if (recvcounts[i] > 0) {
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcounts[i], mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf,recvcounts[i],recvtype,mpi_errno);
break;
}
}
}
else if (root != MPI_PROC_NULL) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPID_Datatype_get_ptr(sendtype, sendtype_ptr);
MPID_Datatype_valid_ptr( sendtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPID_Datatype_committed_ptr( sendtype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
MPIR_ERRTEST_USERBUFFER(sendbuf,sendcount,sendtype,mpi_errno);
}
}
}
MPID_END_ERROR_CHECKS
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Igatherv_impl(sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm_ptr, request);
if (mpi_errno) MPIU_ERR_POP(mpi_errno);
/* ... end of body of routine ... */
fn_exit:
MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_IGATHERV);
MPIU_THREAD_CS_EXIT(ALLFUNC,);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_igatherv", "**mpi_igatherv %p %d %D %p %p %p %D %d %C %p", sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs, recvtype, root, comm, request);
}
# endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
goto fn_exit;
}
/*@
MPI_Gatherv - Gathers into specified locations from all processes in a group
Input Parameters:
+ sendbuf - starting address of send buffer (choice)
. sendcount - number of elements in send buffer (integer)
. sendtype - data type of send buffer elements (handle)
. recvcounts - integer array (of length group size)
containing the number of elements that are received from each process
(significant only at 'root')
. displs - integer array (of length group size). Entry
'i' specifies the displacement relative to recvbuf at
which to place the incoming data from process 'i' (significant only
at root)
. recvtype - data type of recv buffer elements
(significant only at 'root') (handle)
. root - rank of receiving process (integer)
- comm - communicator (handle)
Output Parameters:
. recvbuf - address of receive buffer (choice, significant only at 'root')
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COMM
.N MPI_ERR_TYPE
.N MPI_ERR_BUFFER
@*/
int MPI_Gatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
void *recvbuf, const int *recvcounts, const int *displs,
MPI_Datatype recvtype, int root, MPI_Comm comm)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_Errflag_t errflag = MPIR_ERR_NONE;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_GATHERV);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_COLL_ENTER(MPID_STATE_MPI_GATHERV);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr(comm, comm_ptr);
/* Validate parameters and objects (post conversion) */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Datatype *sendtype_ptr = NULL, *recvtype_ptr = NULL;
int i, rank, comm_size;
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTRACOMM) {
MPIR_ERRTEST_INTRA_ROOT(comm_ptr, root, mpi_errno);
if (sendbuf != MPI_IN_PLACE) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(sendtype, sendtype_ptr);
MPIR_Datatype_valid_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_USERBUFFER(sendbuf, sendcount, sendtype, mpi_errno);
}
rank = comm_ptr->rank;
if (rank == root) {
comm_size = comm_ptr->local_size;
for (i = 0; i < comm_size; i++) {
MPIR_ERRTEST_COUNT(recvcounts[i], mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
}
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(recvtype, recvtype_ptr);
MPIR_Datatype_valid_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
for (i = 0; i < comm_size; i++) {
if (recvcounts[i] > 0) {
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcounts[i], mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf, recvcounts[i], recvtype, mpi_errno);
break;
}
}
/* catch common aliasing cases */
if (sendbuf != MPI_IN_PLACE && sendtype == recvtype &&
recvcounts[comm_ptr->rank] != 0 && sendcount != 0) {
int recvtype_size;
MPIR_Datatype_get_size_macro(recvtype, recvtype_size);
MPIR_ERRTEST_ALIAS_COLL(sendbuf,
(char *) recvbuf +
displs[comm_ptr->rank] * recvtype_size, mpi_errno);
}
} else
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
}
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTERCOMM) {
MPIR_ERRTEST_INTER_ROOT(comm_ptr, root, mpi_errno);
if (root == MPI_ROOT) {
comm_size = comm_ptr->remote_size;
for (i = 0; i < comm_size; i++) {
MPIR_ERRTEST_COUNT(recvcounts[i], mpi_errno);
MPIR_ERRTEST_DATATYPE(recvtype, "recvtype", mpi_errno);
}
if (HANDLE_GET_KIND(recvtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(recvtype, recvtype_ptr);
MPIR_Datatype_valid_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(recvtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
for (i = 0; i < comm_size; i++) {
if (recvcounts[i] > 0) {
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, recvcounts[i], mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf, recvcounts[i], recvtype, mpi_errno);
break;
}
}
} else if (root != MPI_PROC_NULL) {
MPIR_ERRTEST_COUNT(sendcount, mpi_errno);
MPIR_ERRTEST_DATATYPE(sendtype, "sendtype", mpi_errno);
if (HANDLE_GET_KIND(sendtype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(sendtype, sendtype_ptr);
MPIR_Datatype_valid_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_Datatype_committed_ptr(sendtype_ptr, mpi_errno);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
}
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, sendcount, mpi_errno);
MPIR_ERRTEST_USERBUFFER(sendbuf, sendcount, sendtype, mpi_errno);
}
}
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Gatherv(sendbuf, sendcount, sendtype,
recvbuf, recvcounts, displs, recvtype, root, comm_ptr, &errflag);
if (mpi_errno)
goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_COLL_EXIT(MPID_STATE_MPI_GATHERV);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
#ifdef HAVE_ERROR_CHECKING
{
mpi_errno =
MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, __func__, __LINE__, MPI_ERR_OTHER,
"**mpi_gatherv", "**mpi_gatherv %p %d %D %p %p %p %D %d %C",
sendbuf, sendcount, sendtype, recvbuf, recvcounts, displs,
recvtype, root, comm);
}
#endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, __func__, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}
/*@
MPI_Allreduce - Combines values from all processes and distributes the result
back to all processes
Input Parameters:
+ sendbuf - starting address of send buffer (choice)
. count - number of elements in send buffer (integer)
. datatype - data type of elements of send buffer (handle)
. op - operation (handle)
- comm - communicator (handle)
Output Parameter:
. recvbuf - starting address of receive buffer (choice)
.N ThreadSafe
.N Fortran
.N collops
.N Errors
.N MPI_ERR_BUFFER
.N MPI_ERR_COUNT
.N MPI_ERR_TYPE
.N MPI_ERR_OP
.N MPI_ERR_COMM
@*/
int MPI_Allreduce ( void *sendbuf, void *recvbuf, int count,
MPI_Datatype datatype, MPI_Op op, MPI_Comm comm )
{
static const char FCNAME[] = "MPI_Allreduce";
int mpi_errno = MPI_SUCCESS;
MPID_Comm *comm_ptr = NULL;
int errflag = FALSE;
MPID_MPI_STATE_DECL(MPID_STATE_MPI_ALLREDUCE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPIU_THREAD_CS_ENTER(ALLFUNC,);
MPID_MPI_COLL_FUNC_ENTER(MPID_STATE_MPI_ALLREDUCE);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPID_Comm_get_ptr( comm, comm_ptr );
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPID_Datatype *datatype_ptr = NULL;
MPID_Op *op_ptr = NULL;
MPID_Comm_valid_ptr( comm_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
MPIR_ERRTEST_OP(op, mpi_errno);
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN) {
MPID_Datatype_get_ptr(datatype, datatype_ptr);
MPID_Datatype_valid_ptr( datatype_ptr, mpi_errno );
MPID_Datatype_committed_ptr( datatype_ptr, mpi_errno );
}
if (comm_ptr->comm_kind == MPID_INTERCOMM)
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, count, mpi_errno);
if (sendbuf != MPI_IN_PLACE)
MPIR_ERRTEST_USERBUFFER(sendbuf,count,datatype,mpi_errno);
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, count, mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf,count,datatype,mpi_errno);
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
if (HANDLE_GET_KIND(op) != HANDLE_KIND_BUILTIN) {
MPID_Op_get_ptr(op, op_ptr);
MPID_Op_valid_ptr( op_ptr, mpi_errno );
}
if (HANDLE_GET_KIND(op) == HANDLE_KIND_BUILTIN) {
mpi_errno =
( * MPIR_Op_check_dtype_table[op%16 - 1] )(datatype);
}
if (count != 0) {
MPIR_ERRTEST_ALIAS_COLL(sendbuf, recvbuf, mpi_errno);
}
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Allreduce_impl(sendbuf, recvbuf, count, datatype, op, comm_ptr, &errflag);
if (mpi_errno) goto fn_fail;
/* ... end of body of routine ... */
fn_exit:
MPID_MPI_COLL_FUNC_EXIT(MPID_STATE_MPI_ALLREDUCE);
MPIU_THREAD_CS_EXIT(ALLFUNC,);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(
mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_allreduce",
"**mpi_allreduce %p %p %d %D %O %C", sendbuf, recvbuf, count, datatype, op, comm);
}
# endif
mpi_errno = MPIR_Err_return_comm( comm_ptr, FCNAME, mpi_errno );
goto fn_exit;
/* --END ERROR HANDLING-- */
}
/*@
MPI_Reduce - Reduces values on all processes to a single value
Input Parameters:
+ sendbuf - address of send buffer (choice)
. count - number of elements in send buffer (integer)
. datatype - data type of elements of send buffer (handle)
. op - reduce operation (handle)
. root - rank of root process (integer)
- comm - communicator (handle)
Output Parameters:
. recvbuf - address of receive buffer (choice,
significant only at 'root')
.N ThreadSafe
.N Fortran
.N collops
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COMM
.N MPI_ERR_COUNT
.N MPI_ERR_TYPE
.N MPI_ERR_BUFFER
.N MPI_ERR_BUFFER_ALIAS
@*/
int MPI_Reduce(const void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype,
MPI_Op op, int root, MPI_Comm comm)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_Errflag_t errflag = MPIR_ERR_NONE;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_REDUCE);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_COLL_ENTER(MPID_STATE_MPI_REDUCE);
/* Validate parameters, especially handles needing to be converted */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr( comm, comm_ptr );
/* Validate parameters and objects (post conversion) */
# ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Datatype *datatype_ptr = NULL;
MPIR_Op *op_ptr = NULL;
int rank;
MPIR_Comm_valid_ptr( comm_ptr, mpi_errno, FALSE );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTRACOMM) {
MPIR_ERRTEST_INTRA_ROOT(comm_ptr, root, mpi_errno);
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(datatype, datatype_ptr);
MPIR_Datatype_valid_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPIR_Datatype_committed_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
if (sendbuf != MPI_IN_PLACE)
MPIR_ERRTEST_USERBUFFER(sendbuf,count,datatype,mpi_errno);
rank = comm_ptr->rank;
if (rank == root) {
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, count, mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf,count,datatype,mpi_errno);
if (count != 0 && sendbuf != MPI_IN_PLACE) {
MPIR_ERRTEST_ALIAS_COLL(sendbuf, recvbuf, mpi_errno);
}
}
else
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, count, mpi_errno);
}
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTERCOMM) {
MPIR_ERRTEST_INTER_ROOT(comm_ptr, root, mpi_errno);
if (root == MPI_ROOT) {
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(datatype, datatype_ptr);
MPIR_Datatype_valid_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPIR_Datatype_committed_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPIR_ERRTEST_RECVBUF_INPLACE(recvbuf, count, mpi_errno);
MPIR_ERRTEST_USERBUFFER(recvbuf,count,datatype,mpi_errno);
}
else if (root != MPI_PROC_NULL) {
MPIR_ERRTEST_COUNT(count, mpi_errno);
MPIR_ERRTEST_DATATYPE(datatype, "datatype", mpi_errno);
if (HANDLE_GET_KIND(datatype) != HANDLE_KIND_BUILTIN) {
MPIR_Datatype_get_ptr(datatype, datatype_ptr);
MPIR_Datatype_valid_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
MPIR_Datatype_committed_ptr( datatype_ptr, mpi_errno );
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPIR_ERRTEST_SENDBUF_INPLACE(sendbuf, count, mpi_errno);
MPIR_ERRTEST_USERBUFFER(sendbuf,count,datatype,mpi_errno);
}
}
MPIR_ERRTEST_OP(op, mpi_errno);
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
if (HANDLE_GET_KIND(op) != HANDLE_KIND_BUILTIN) {
MPIR_Op_get_ptr(op, op_ptr);
MPIR_Op_valid_ptr( op_ptr, mpi_errno );
}
if (HANDLE_GET_KIND(op) == HANDLE_KIND_BUILTIN) {
mpi_errno =
( * MPIR_OP_HDL_TO_DTYPE_FN(op) )(datatype);
}
if (mpi_errno != MPI_SUCCESS) goto fn_fail;
}
MPID_END_ERROR_CHECKS;
}
# endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
mpi_errno = MPIR_Reduce(sendbuf, recvbuf, count, datatype, op, root, comm_ptr, &errflag);
if (mpi_errno) MPIR_ERR_POP(mpi_errno);
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_COLL_EXIT(MPID_STATE_MPI_REDUCE);
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
return mpi_errno;
fn_fail:
/* --BEGIN ERROR HANDLING-- */
# ifdef HAVE_ERROR_CHECKING
{
mpi_errno = MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE,
FCNAME, __LINE__, MPI_ERR_OTHER,
"**mpi_reduce", "**mpi_reduce %p %p %d %D %O %d %C", sendbuf, recvbuf,
count, datatype, op, root, comm);
}
# endif
mpi_errno = MPIR_Err_return_comm( comm_ptr, FCNAME, mpi_errno );
goto fn_exit;
/* --END ERROR HANDLING-- */
}
