77 строки
1.9 KiB
Plaintext
77 строки
1.9 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright (c) 2015 University of Houston. All rights reserved.
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.\" Copyright (c) 2015 Mellanox Technologies, Inc.
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.\" $COPYRIGHT$
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.de Vb
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.ft CW
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.nf
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..
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.de Ve
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.ft R
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.fi
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..
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.TH "SHMEM\\_ADD" "3" "#OMPI_DATE#" "#PACKAGE_VERSION#" "#PACKAGE_NAME#"
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.SH NAME
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\fIshmem_int_add\fP(3),
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\fIshmem_int4_add\fP(3),
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\fIshmem_int8_add\fP(3),
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\fIshmem_long_add\fP(3),
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\fIshmem_longlong_add\fP(3)
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\- Performs an atomic add
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operation.
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.SH SYNOPSIS
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C or C++:
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.Vb
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#include <mpp/shmem.h>
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void shmem_int_add(int *target, int value, int pe);
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void shmem_long_add(long *target, long value, int pe);
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void shmem_longlong_add(long long *target, long long value,
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int pe);
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.Ve
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Fortran:
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.Vb
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include 'mpp/shmem.h'
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INTEGER pe
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CALL SHMEM_INT4_ADD(target, value, pe)
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CALL SHMEM_INT8_ADD(target, value, pe)
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.Ve
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.SH DESCRIPTION
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The atomic add routines add \fBvalue\fP
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to the data at address \fBtarget\fP
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on PE
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\fBpe\fP\&.
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The operation completes without the possibility of another process updating
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target between the time of the fetch and the update.
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.PP
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The arguments are as follows:
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.TP
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target
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The remotely accessible integer data object to be updated on the remote PE. If
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you are using C/C++, the type of target should match that implied in the SYNOPSIS section. If
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you are using the Fortran compiler, it must be of type integer with an element size of 4 bytes
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for SHMEM_INT4_ADD and 8 bytes for SHMEM_INT8_ADD.
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.TP
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value
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The value to be atomically added to target. If you are using C/C++, the type of
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value should match that implied in the SYNOPSIS section. If you are using Fortran, it must be
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of type integer with an element size of target.
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.TP
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pe
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An integer that indicates the PE number upon which target is to be updated. If you
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are using Fortran, it must be a default integer value.
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.PP
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.SH NOTES
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The term remotely accessible is defined in \fIintro_shmem\fP(3)\&.
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.SH SEE ALSO
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\fIintro_shmem\fP(3),
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\fIshmem_cache\fP(3)
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