SHMEM_PUT(3) Open MPI SHMEM_PUT(3)
NAME
shmem_character_put(3), shmem_complex_put(3), shmem_double_put(3),
shmem_float_put(3), shmem_int_put(3), shmem_integer_put(3), shmem_logi-
cal_put(3), shmem_long_put(3), shmem_longdouble_put(3), shmem_long-
long_put(3), shmem_put4(3), shmem_put8(3), shmem_put32(3),
shmem_put64(3), shmem_put128(3), shmem_putmem(3), shmem_real_put(3),
shmem_short_put(3) - Transfers data to a specified processing element
(PE)
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 suc-
cessive 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 con-
stant, 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 el-
ement of default integer type.
The target and source data objects must conform to certain typing con-
straints, 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)
4.1.2 Nov 24, 2021 SHMEM_PUT(3)
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