SYNOPSIS

       C or C++:

          #include <mpp/shmem.h>

          void shmem_getmem_nbi(void *dest, const void *source,
            size_t nelems, int pe)

          void shmem_char_get(char *dest, const char *source,
            size_t nelems, int pe)

          void shmem_short_get(short *dest, const short *source,
            size_t nelems, int pe)

          void shmem_int_get(int *dest, const int *source,
            size_t nelems, int pe)

          void shmem_long_get(long *dest, const long *source,
            size_t nelems, int pe)

          void shmem_longlong_get(long long *dest, const long long *source,
            size_t nelems, int pe)

          void shmem_float_get(float *dest, const float *source,
            size_t nelems, int pe)

          void shmem_double_get(double *dest, const double *source,
            size_t nelems, int pe)

          void shmem_longdouble_get(long double *dest, const long double *source,
            size_t nelems, int pe)

          void shmem_get8(void *dest, const void *source,
            size_t nelems, int pe)

          void shmem_get16(void *dest, const void *source,
            size_t nelems, int pe)

          void shmem_get32(void *dest, const void *source,
            size_t nelems, int pe)

          void shmem_get64(void *dest, const void *source,
            size_t nelems, int pe)

          void shmem_get128(void *dest, const void *source,
            size_t nelems, int pe)

       Fortran:

          INCLUDE "mpp/shmem.fh"

          INTEGER nelems, pe

          CALL SHMEM_GETMEM_NBI(dest, source, nelems, pe)

          CALL SHMEM_CHARACTER_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_COMPLEX_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_DOUBLE_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_INTEGER_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_LOGICAL_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_REAL_GET_NBI(dest, source, nelems, pe)

          CALL SHMEM_GET4_NBI(dest, source, nelems, pe)

          CALL SHMEM_GET8_NBI(dest, source, nelems, pe)

          CALL SHMEM_GET32_NBI(dest, source, nelems, pe)

          CALL SHMEM_GET64_NBI(dest, source, nelems, pe)

          CALL SHMEM_GET128_NBI(dest, source, nelems, pe)

DESCRIPTION

       The get routines provide a method for copying a contiguous symmetric data object from a different PE to a
       contiguous data object on the local PE. The routines return after posting the operation. The operation is
       considered complete after a subsequent call to shmem_quiet. At the completion of  shmem_quiet,  the  data
       has been delivered to the dest array on the local PE.

       The arguments are as follows:

       dest   Local data object to be updated.

       source Data  object on the PE identified by pe that contains the data to be copied. This data object must
              be remotely accessible.

       nelems Number of elements in the target and source arrays. len must be of type integer. If you are  using
              Fortran, it must be a constant, variable, or array element of default integer type.

       pe     PE  number  of  the  remote PE. pe must be of type integer. If you are using Fortran, it must be a
              constant, variable, or array element of default integer type.

       If you are using Fortran, data types must be of default size.  For  example,  a  real  variable  must  be
       declared as REAL, REAL*4, or REAL(KIND=4).

NOTES

       See intro_shmem(3) for a definition of the term remotely accessible.

EXAMPLES

       Consider this simple example for Fortran.

          PROGRAM REDUCTION
            REAL VALUES, SUM
            COMMON /C/ VALUES
            REAL WORK

            CALL START_PES(0) ! ALLOW ANY NUMBER OF PES
            VALUES = MY_PE() ! INITIALIZE IT TO SOMETHING
            CALL SHMEM_BARRIER_ALL
            SUM = 0.0
            DO I = 0,NUM_PES()-1
              CALL SHMEM_REAL_GET_NBI(WORK, VALUES, 1, I)
              CALL SHMEM_QUIET                ! wait for delivery
              SUM = SUM + WORK
            ENDDO
            PRINT *, 'PE ', MY_PE(), ' COMPUTED SUM=', SUM
            CALL SHMEM_BARRIER_ALL
          END

       SEE ALSO:
          intro_shmem(3) shmem_quiet(3)

COPYRIGHT

       2003-2025, The Open MPI Community

                                                  Feb 17, 2025                            SHMEM_FLOAT_GET_NBI(3)