.\" -*- nroff -*-
.\" Copyright (c) 2018      FUJITSU LIMITED.  All rights reserved.
.\" $COPYRIGHT$
.TH MPIX_Barrier_init 3 "Feb 23, 2023" "4.1.5" "Open MPI"
.SH NAME
\fBMPIX_Allgather_init, MPIX_Allgatherv_init, MPIX_Allreduce_init, MPIX_Alltoall_init, MPIX_Alltoallv_init, MPIX_Alltoallw_init, MPIX_Barrier_init, MPIX_Bcast_init, MPIX_Exscan_init, MPIX_Gather_init, MPIX_Gatherv_init, MPIX_Reduce_init, MPIX_Reduce_scatter_init, MPIX_Reduce_scatter_block_init, MPIX_Scan_init, MPIX_Scatter_init, MPIX_Scatterv_init, MPIX_Neighbor_allgather_init, MPIX_Neighbor_allgatherv_init, MPIX_Neighbor_alltoall_init, MPIX_Neighbor_alltoallv_init, MPIX_Neighbor_alltoallw_init\fP \- Builds a handle for a collective communication or neighborhood collective communication

.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
#include <mpi-ext.h>
int MPIX_Allgather_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Allgatherv_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, const int \fIrecvcounts\fP[],
	const int \fIdispls\fP[], MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Allreduce_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP, int \fIcount\fP,
	MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Alltoall_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Alltoallv_init(const void *\fIsendbuf\fP, const int \fIsendcounts\fP[],
	const int \fIsdispls\fP[], MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP,
	const int \fIrecvcounts\fP[], const int \fIrdispls\fP[], MPI_Datatype \fIrecvtype\fP,
	MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Alltoallw_init(const void *\fIsendbuf\fP, const int \fIsendcounts\fP[],
	const int \fIsdispls\fP[], const MPI_Datatype \fIsendtypes\fP[], void *\fIrecvbuf\fP,
	const int \fIrecvcounts\fP[], const int \fIrdispls\fP[],
	const MPI_Datatype \fIrecvtypes\fP[], MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Barrier_init(MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Bcast_init(void *\fIbuffer\fP, int \fIcount\fP, MPI_Datatype \fIdatatype\fP,
	int \fIroot\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Exscan_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP, int \fIcount\fP,
	MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Gather_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, int \fIroot\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Gatherv_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, const int \fIrecvcounts\fP[],
	const int \fIdispls\fP[], MPI_Datatype \fIrecvtype\fP, int \fIroot\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Reduce_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP, int \fIcount\fP,
	MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP, int \fIroot\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Reduce_scatter_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP,
	const int \fIrecvcounts\fP[], MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP,
	MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Reduce_scatter_block_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP,
	int \fIrecvcount\fP, MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Scan_init(const void *\fIsendbuf\fP, void *\fIrecvbuf\fP, int \fIcount\fP,
	MPI_Datatype \fIdatatype\fP, MPI_Op \fIop\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Scatter_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, int \fIroot\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Scatterv_init(const void *\fIsendbuf\fP, const int \fIsendcounts\fP[],
	const int \fIdispls\fP[], MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP,
	int \fIrecvcount\fP, MPI_Datatype \fIrecvtype\fP, int \fIroot\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Neighbor_allgather_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Neighbor_allgatherv_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, const int \fIrecvcounts\fP[],
	const int \fIdispls\fP[], MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP,
	MPI_Info \fIinfo\fP, MPI_Request *\fIrequest\fP)

int MPIX_Neighbor_alltoall_init(const void *\fIsendbuf\fP, int \fIsendcount\fP,
	MPI_Datatype \fIsendtype\fP, void *\fIrecvbuf\fP, int \fIrecvcount\fP,
	MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Neighbor_alltoallv_init(const void *\fIsendbuf\fP,
	const int \fIsendcounts\fP[], const int \fIsdispls\fP[], MPI_Datatype \fIsendtype\fP,
	void *\fIrecvbuf\fP, const int \fIrecvcounts\fP[], const int \fIrdispls\fP[],
	MPI_Datatype \fIrecvtype\fP, MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

int MPIX_Neighbor_alltoallw_init(const void *\fIsendbuf\fP,
	const int \fIsendcounts\fP[], const MPI_Aint \fIsdispls\fP[],
	const MPI_Datatype \fIsendtypes\fP[], void *\fIrecvbuf\fP,
	const int \fIrecvcounts\fP[], const MPI_Aint \fIrdispls\fP[],
	const MPI_Datatype \fIrecvtypes\fP[], MPI_Comm \fIcomm\fP, MPI_Info \fIinfo\fP,
	MPI_Request *\fIrequest\fP)

.fi
.SH Fortran Syntax
.nf
USE MPI
USE MPI_EXT
! or the older form: INCLUDE 'mpif.h'; INCLUDE 'mpif-ext.h'
MPIX_ALLGATHER_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT,
		RECVTYPE, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF\fP(*)\fI, RECVBUF\fP(*)
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, COMM, INFO\fP
	INTEGER	\fIREQUEST, IERROR\fP

MPIX_ALLGATHERV_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF,
		RECVCOUNT, DISPLS, RECVTYPE, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF\fP(*)\fI, RECVBUF\fP(*)
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT\fP(*)
	INTEGER	\fIDISPLS\fP(*)\fI, RECVTYPE, COMM, INFO, REQUEST, IERROR\fP

MPIX_ALLREDUCE_INIT(\fISENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO,
		REQUEST, IERROR\fP)
	<type>	\fISENDBUF\fP(*)\fI, RECVBUF\fP(*)
	INTEGER	\fICOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR\fP

MPIX_ALLTOALL_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT,
		RECVTYPE, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_ALLTOALLV_INIT(\fISENDBUF, SENDCOUNTS, SDISPLS, SENDTYPE,
		RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPE, COMM, INFO, REQUEST,
		IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNTS(*), SDISPLS(*), SENDTYPE\fP
	INTEGER	\fIRECVCOUNTS(*), RDISPLS(*), RECVTYPE\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_ALLTOALLW_INIT(\fISENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES,
		RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, INFO, REQUEST,
		IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNTS(*), SDISPLS(*), SENDTYPES(*)\fP
	INTEGER	\fIRECVCOUNTS(*), RDISPLS(*), RECVTYPES(*)\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_BARRIER_INIT(\fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP)
	INTEGER	\fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP

MPIX_BCAST_INIT(\fIBUFFER\fP, \fICOUNT\fP, \fIDATATYPE\fP, \fIROOT\fP, \fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP,
		\fIIERROR\fP)
	<type>	\fIBUFFER\fP(*)
	INTEGER	\fICOUNT\fP, \fIDATATYPE\fP, \fIROOT\fP, \fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP

MPIX_EXSCAN_INIT(\fISENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO,
		REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fICOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR\fP

MPIX_GATHER_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT,
		RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, ROOT\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_GATHERV_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNTS,
		DISPLS, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNTS(*), DISPLS(*)\fP
	INTEGER	\fIRECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP

MPIX_REDUCE_INIT(\fISENDBUF, RECVBUF, COUNT, DATATYPE, OP, ROOT, COMM,
		INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fICOUNT, DATATYPE, OP, ROOT, COMM, INFO, REQUEST, IERROR\fP

MPIX_REDUCE_SCATTER_INIT(\fISENDBUF, RECVBUF, RECVCOUNTS, DATATYPE, OP,
		COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fIRECVCOUNTS(*), DATATYPE, OP, COMM, INFO, REQUEST, IERROR \fP

MPIX_REDUCE_SCATTER_BLOCK_INIT(\fISENDBUF, RECVBUF, RECVCOUNT, DATATYPE,
		OP, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fIRECVCOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR \fP

MPIX_SCAN_INIT(\fISENDBUF, RECVBUF, COUNT, DATATYPE, OP, COMM, INFO,
		REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fICOUNT, DATATYPE, OP, COMM, INFO, REQUEST, IERROR\fP

MPIX_SCATTER_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF, RECVCOUNT,
		RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE, ROOT\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_SCATTERV_INIT(\fISENDBUF, SENDCOUNTS, DISPLS, SENDTYPE, RECVBUF,
		RECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNTS(*), DISPLS(*), SENDTYPE\fP
	INTEGER	\fIRECVCOUNT, RECVTYPE, ROOT, COMM, INFO, REQUEST, IERROR\fP

MPIX_NEIGHBOR_ALLGATHER_INIT(\fISENDBUF\fP, \fISENDCOUNT\fP, \fISENDTYPE\fP, \fIRECVBUF\fP,
		\fIRECVCOUNT\fP, \fIRECVTYPE\fP, \fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP)
	<type>	\fISENDBUF\fP(*), \fIRECVBUF\fP(*)
	INTEGER	\fISENDCOUNT\fP, \fISENDTYPE\fP, \fIRECVCOUNT\fP, \fIRECVTYPE\fP, \fICOMM\fP,
	INTEGER	\fIINFO, REQUEST, IERROR\fP

MPIX_NEIGHBOR_ALLGATHERV_INIT(\fISENDBUF\fP, \fISENDCOUNT\fP, \fISENDTYPE\fP, \fIRECVBUF\fP,
		\fIRECVCOUNT\fP, \fIDISPLS\fP, \fIRECVTYPE\fP, \fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP)
	<type>	\fISENDBUF\fP(*), \fIRECVBUF\fP(*)
	INTEGER	\fISENDCOUNT\fP, \fISENDTYPE\fP, \fIRECVCOUNT\fP(*),
	INTEGER	\fIDISPLS\fP(*), \fIRECVTYPE\fP, \fICOMM\fP, \fIINFO\fP, \fIREQUEST\fP, \fIIERROR\fP

MPIX_NEIGHBOR_ALLTOALL_INIT(\fISENDBUF, SENDCOUNT, SENDTYPE, RECVBUF,
		RECVCOUNT, RECVTYPE, COMM, INFO, REQUEST, IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNT, SENDTYPE, RECVCOUNT, RECVTYPE\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_NEIGHBOR_ALLTOALLV_INIT(\fISENDBUF, SENDCOUNTS, SDISPLS, SENDTYPE,
		RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPE, COMM, INFO, REQUEST,
		IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNTS(*), SDISPLS(*), SENDTYPE\fP
	INTEGER	\fIRECVCOUNTS(*), RDISPLS(*), RECVTYPE\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

MPIX_NEIGHBOR_ALLTOALLW_INIT(\fISENDBUF, SENDCOUNTS, SDISPLS, SENDTYPES,
		RECVBUF, RECVCOUNTS, RDISPLS, RECVTYPES, COMM, INFO, REQUEST,
		IERROR\fP)
	<type>	\fISENDBUF(*), RECVBUF(*)\fP
	INTEGER	\fISENDCOUNTS(*), SENDTYPES(*)\fP
	INTEGER	\fIRECVCOUNTS(*), RECVTYPES(*)\fP
	INTEGER(KIND=MPI_ADDRESS_KIND) \fISDISPLS(*), RDISPLS(*)\fP
	INTEGER	\fICOMM, INFO, REQUEST, IERROR\fP

.fi
.SH Fortran 2008 Syntax
.nf
USE mpi_f08
USE mpi_f08_ext
MPIX_Allgather_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP, \fIrecvcount\fP,
		\fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Allgatherv_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP, \fIrecvcounts\fP,
		\fIdispls\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIrecvcounts(*)\fP, \fIdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Allreduce_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIcount\fP, \fIdatatype\fP, \fIop\fP, \fIcomm\fP, \fIinfo\fP,
		\fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Alltoall_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP, \fIrecvcount\fP,
		\fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Alltoallv_init(\fIsendbuf\fP, \fIsendcounts\fP, \fIsdispls\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcounts\fP, \fIrdispls\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIsendcounts(*)\fP, \fIsdispls(*)\fP,
	\fIrecvcounts(*)\fP, \fIrdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Alltoallw_init(\fIsendbuf\fP, \fIsendcounts\fP, \fIsdispls\fP, \fIsendtypes\fP, \fIrecvbuf\fP,
		\fIrecvcounts\fP, \fIrdispls\fP, \fIrecvtypes\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIsendcounts(*)\fP, \fIsdispls(*)\fP,
	\fIrecvcounts(*)\fP, \fIrdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: \fIsendtypes(*)\fP,
	\fIrecvtypes(*)\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Barrier_init(\fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Bcast_init(\fIbuffer\fP, \fIcount\fP, \fIdatatype\fP, \fIroot\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP,
		\fIierror\fP)
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIbuffer\fP
	INTEGER, INTENT(IN) :: \fIcount\fP, \fIroot\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Exscan_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIcount\fP, \fIdatatype\fP, \fIop\fP, \fIcomm\fP, \fIinfo\fP,
		\fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Gather_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcount\fP, \fIrecvtype\fP, \fIroot\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP, \fIroot\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Gatherv_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP, \fIrecvcounts\fP,
		\fIdispls\fP, \fIrecvtype\fP, \fIroot\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIroot\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIrecvcounts(*)\fP, \fIdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Reduce_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIcount\fP, \fIdatatype\fP, \fIop\fP, \fIroot\fP, \fIcomm\fP,
		\fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIcount\fP, \fIroot\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Reduce_scatter_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIrecvcounts\fP, \fIdatatype\fP, \fIop\fP,
		\fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIrecvcounts(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Reduce_scatter_block_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIrecvcount\fP, \fIdatatype\fP,
		\fIop\fP, \fIcomm\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Reduce_scatter_block_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIrecvcount\fP, \fIdatatype\fP, \fIop\fP,
		\fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Scan_init(\fIsendbuf\fP, \fIrecvbuf\fP, \fIcount\fP, \fIdatatype\fP, \fIop\fP, \fIcomm\fP, \fIinfo\fP,
		\fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIdatatype\fP
	TYPE(MPI_Op), INTENT(IN) :: \fIop\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Scatter_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP, \fIrecvcount\fP,
		\fIrecvtype\fP, \fIroot\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP, \fIroot\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Scatterv_init(\fIsendbuf\fP, \fIsendcounts\fP, \fIdispls\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcount\fP, \fIrecvtype\fP, \fIroot\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIsendcounts(*)\fP, \fIdispls(*)\fP
	INTEGER, INTENT(IN) :: \fIrecvcount\fP, \fIroot\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Neighbor_allgather_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcount\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Neighbor_allgatherv_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcounts\fP, \fIdispls\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIrecvcounts(*)\fP, \fIdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Neighbor_alltoall_init(\fIsendbuf\fP, \fIsendcount\fP, \fIsendtype\fP, \fIrecvbuf\fP,
		\fIrecvcount\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP, \fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN) :: \fIsendcount\fP, \fIrecvcount\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Neighbor_alltoallv_init(\fIsendbuf\fP, \fIsendcounts\fP, \fIsdispls\fP, \fIsendtype\fP,
		\fIrecvbuf\fP, \fIrecvcounts\fP, \fIrdispls\fP, \fIrecvtype\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP,
		\fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIsendcounts(*)\fP, \fIsdispls(*)\fP,
	\fIrecvcounts(*)\fP, \fIrdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN) :: \fIsendtype\fP, \fIrecvtype\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

MPIX_Neighbor_alltoallw_init(\fIsendbuf\fP, \fIsendcounts\fP, \fIsdispls\fP, \fIsendtypes\fP,
		\fIrecvbuf\fP, \fIrecvcounts\fP, \fIrdispls\fP, \fIrecvtypes\fP, \fIcomm\fP, \fIinfo\fP, \fIrequest\fP,
		\fIierror\fP)
	TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: \fIsendbuf\fP
	TYPE(*), DIMENSION(..), ASYNCHRONOUS :: \fIrecvbuf\fP
	INTEGER, INTENT(IN), ASYNCHRONOUS :: \fIsendcounts(*)\fP, \fIrecvcounts(*)\fP
	INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN), ASYNCHRONOUS ::
	\fIsdispls(*)\fP, \fIrdispls(*)\fP
	TYPE(MPI_Datatype), INTENT(IN), ASYNCHRONOUS :: \fIsendtypes(*)\fP,
	\fIrecvtypes(*)\fP
	TYPE(MPI_Comm), INTENT(IN) :: \fIcomm\fP
	TYPE(MPI_Info), INTENT(IN) :: \fIinfo\fP
	TYPE(MPI_Request), INTENT(OUT) :: \fIrequest\fP
	INTEGER, OPTIONAL, INTENT(OUT) :: \fIierror\fP

.fi

.SH DESCRIPTION
.ft R
Creates a persistent communication request for a collective operation or neighborhood collective operation.

As of Nov. 2018, the feature of persistent collective communication operations and persistent collective neighborhood communication operations is planned to be included in the next MPI Standard after MPI-3.1.
.nf

    https://github.com/mpi-forum/mpi-issues/issues/25
.fi

Open MPI implements 2018 Draft Specification of the MPI standard shown in the following URL.
.nf

    https://www.mpi-forum.org/docs/drafts/mpi-2018-draft-report.pdf
.fi

The interface may still change in the standard. Therefore the prefix \fIMPIX_\fP is used instead of \fIMPI_\fP for these request creation routines. To start, complete, and free the created request, usual MPI routines (\fIMPI_Start\fP etc.) can be used.

Future versions of Open MPI will switch to the \fIMPI_\fP prefix and will not require the C header file \fImpi-ext.h\fP, the Fortran modules \fImpi_ext\fP and \fImpi_f08_ext\fP, and the Fortran header file \fImpif-ext.h\fP once the MPI Standard which includes this feature is published.

.SH EXAMPLE
.nf

    MPI_Request req;
    MPIX_Barrier_init(MPI_COMM_WORLD, MPI_INFO_NULL, &req);
    MPI_Start(&req);
    MPI_Wait(&req, MPI_STATUS_IGNORE);
    MPI_Request_free(&req);
.fi

.SH SEE ALSO
.ft R
.sp
MPI_Start
.br
MPI_Startall
.br
MPI_Request_free