plucky (3) shmem_char_put.openmpi.3.gz

Provided by: openmpi-doc_5.0.7-1_all bug

SYNOPSIS
       C or C++:

          #include <mpp/shmem.h>

          void shmem_double_put(double *target, const double *source,
            size_t len, int pe)

          void shmem_float_put(float *target, const float *source,
            size_t len, int pe)

          void shmem_int_put(int *target, const int *source, size_t len,
            int pe)

          void shmem_long_put(long *target, const long *source,
            size_t len, int pe)

          void shmem_longdouble_put(long double *target,
            const long double *source, size_t len, int pe)

          void shmem_longlong_put(long long *target,
            const long long *source, size_t len, int pe)

          void shmem_put32(void *target, const void *source, size_t len,
            int pe)

          void shmem_put64(void *target, const void *source, size_t len,
            int pe)

          void shmem_put128(void *target, const void *source, size_t len,
            int pe)

          void shmem_putmem(void *target, const void *source, size_t len,
            int pe)

          void shmem_short_put(short *target, const short *source,
            size_t len, int pe)

       Fortran:

          INCLUDE "mpp/shmem.fh"

          INTEGER len, pe

          CALL SHMEM_CHARACTER_PUT(target, source, len, pe)

          CALL SHMEM_COMPLEX_PUT(target, source, len, pe)

          CALL SHMEM_DOUBLE_PUT(target, source, len, pe)

          CALL SHMEM_INTEGER_PUT(target, source, len, pe)

          CALL SHMEM_LOGICAL_PUT(target, source, len, pe)

          CALL SHMEM_PUT(target, source, len, pe)

          CALL SHMEM_PUT4(target, source, len, pe)

          CALL SHMEM_PUT8(target, source, len, pe)

          CALL SHMEM_PUT32(target, source, len, pe)

          CALL SHMEM_PUT64(target, source, len, pe)

          CALL SHMEM_PUT128(target, source, len, pe)

          CALL SHMEM_PUTMEM(target, source, len, pe)

          CALL SHMEM_REAL_PUT(target, source, len, pe)


DESCRIPTION
       These routines transfer nelems elements of the data object at address source on the calling  PE,  to  the
       data  object  at  address  target  on  the remote PE pe. These routines start the remote transfer and may
       return before the data is delivered to the remote PE.

       The delivery of data into the data object on the destination PE from different put calls may occur in any
       order.  Because  of  this,  two  successive put operations may deliver data out of order unless a call to
       shmem_fence(3) is introduced between the two calls.

       The arguments are as follows:

       target Data object to be updated on the remote PE. This data object must be remotely accessible.

       source Data object containing the data to be copied.

       len    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.

       The target and source data objects must conform to certain typing constraints, which are as follows:

       shmem_putmem: Fortran: Any noncharacter type. C: Any data type. len is scaled in
              bytes.

       shmem_put4, shmem_put32:** Any noncharacter type that has a storage size
              equal to 32 bits.

       shmem_put8, shmem_put64:** Any noncharacter type that has a storage size
              equal to 64 bits.

       shmem_put128:** Any noncharacter type that has a storage size equal to 128
              bits.

       shmem_short_put:** Elements of type short.

       shmem_int_put:** Elements of type int.

       shmem_long_put:** Elements of type long.

       shmem_longlong_put:** Elements of type long long.

       shmem_float_put:** Elements of type float.

       shmem_double_put:** Elements of type double.

       shmem_longdouble_put:** Elements of type long double.

       SHMEM_CHARACTER_PUT: Elements of type character. len is the number of
              characters to transfer. The actual character lengths  of  the  source  and  target  variables  are
              ignored.

       SHMEM_COMPLEX_PUT: Elements of type complex of default size.

       SHMEM_DOUBLE_PUT: (Fortran) Elements of type double precision.

       SHMEM_INTEGER_PUT: Elements of type integer.

       SHMEM_LOGICAL_PUT: Elements of type logical.

       SHMEM_REAL_PUT: Elements of type real.
              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).


EXAMPLES
       The following shmem_put example is for C/C++ programs:

          #include <stdio.h>
          #include <mpp/shmem.h>

          main()
          {
            long source[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
            static long target[10];
            shmem_init();

            if (shmem_my_pe() == 0) {
              /* put 10 words into target on PE 1 */
              shmem_long_put(target, source, 10, 1);
            }
            shmem_barrier_all();  /* sync sender and receiver */
            if (shmem_my_pe() == 1)
              shmem_udcflush();  /* not required on Altix systems */
            printf("target[0] on PE %d is %d\n", shmem_my_pe(), target[0]);
          }

       SEE ALSO:
          intro_shmem(3) shmem_iput(3) shmem_quiet(3)


       2003-2025, The Open MPI Community

                                                  Feb 17, 2025                                 SHMEM_CHAR_PUT(3)