GNU.WIKI: The GNU/Linux Knowledge Base

  [HOME] [PHP Manual] [HowTo] [ABS] [MAN1] [MAN2] [MAN3] [MAN4] [MAN5] [MAN6] [MAN7] [MAN8] [MAN9]

  [0-9] [Aa] [Bb] [Cc] [Dd] [Ee] [Ff] [Gg] [Hh] [Ii] [Jj] [Kk] [Ll] [Mm] [Nn] [Oo] [Pp] [Qq] [Rr] [Ss] [Tt] [Uu] [Vv] [Ww] [Xx] [Yy] [Zz]


NAME

       MPI_Igatherv  -  Gathers into specified locations from all processes in
       a group in a nonblocking way

SYNOPSIS

       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)

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)

THREAD AND INTERRUPT SAFETY

       This routine is thread-safe.  This  means  that  this  routine  may  be
       safely  used by multiple threads without the need for any user-provided
       thread locks.  However, the routine is not interrupt safe.   Typically,
       this  is due to the use of memory allocation routines such as malloc or
       other non-MPICH runtime routines that  are  themselves  not  interrupt-
       safe.

NOTES FOR FORTRAN

       All  MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
       an additional argument ierr at the end of the argument list.   ierr  is
       an  integer and has the same meaning as the return value of the routine
       in C.  In Fortran, MPI routines are subroutines, and are  invoked  with
       the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
       Fortran.

ERRORS

       All MPI routines (except MPI_Wtime and  MPI_Wtick  )  return  an  error
       value;  C routines as the value of the function and Fortran routines in
       the last argument.  Before the value is returned, the current MPI error
       handler  is called.  By default, this error handler aborts the MPI job.
       The error handler may  be  changed  with  MPI_Comm_set_errhandler  (for
       communicators),     MPI_File_set_errhandler     (for     files),    and
       MPI_Win_set_errhandler  (for   RMA   windows).    The   MPI-1   routine
       MPI_Errhandler_set  may  be  used  but  its  use  is  deprecated.   The
       predefined error handler MPI_ERRORS_RETURN may be used to  cause  error
       values  to  be  returned.  Note that MPI does not guarentee that an MPI
       program can continue past an error; however, MPI  implementations  will
       attempt to continue whenever possible.

LOCATION

       /tmp/gyCYfBi4J6/mpich-3.1/src/mpi/coll/igatherv.c

                                   2/20/2014                   MPI_Igatherv(3)



  All copyrights belong to their respective owners. Other content (c) 2014-2018, GNU.WIKI. Please report site errors to webmaster@gnu.wiki.
Page load time: 0.087 seconds. Last modified: November 04 2018 12:49:43.