shmem_get16_nbi.openmpi3
Usage
C or
C++:
Fortran:
shmem_getmem_nbi(3), shmem_char_get_nbi(3), shmem_short_get_nbi(3), shmem_int_get_nbi(3), shmem_long_get_nbi(3), shmem_longlong_get_nbi(3), shmem_float_get_nbi(3), shmem_double_get_nbi(3), shmem_longdouble_get_nbi(3), shmem_get8_nbi(3), shmem_get16_nbi(3), shmem_get32_nbi(3), shmem_get64_nbi(3), shmem_get128_nbi(3), - The nonblocking get routines provide a method for copying data from a contiguous remote data object on the specified PE to the local data object.
Overview
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: