Generalized portable shmem library for high performance computing

Authors:
Krzysztof Parzyszek;Ricky A. Kendall;Robyn R. Lutz
Affiliations:
-;-;-
Venue:
Generalized portable shmem library for high performance computing
Year:
2003

Citing 0
Cited 7

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Abstract

The Generalized Portable SHMEM library (GPSHMEM) is a portable implementation of the SHMEM library originally released by Cray Research Inc. on the Cray T3D. SHMEM and GPSHMEM realize the distributed shared memory programming model, that is, a shared memory programming model in environments in which memory is physically distributed. It is intended for use on a large variety of hardware platforms, including distributed systems with a network interconnect. The programming interface of GPSHMEM follows that of SHMEM and includes remote memory access operations (one-sided communication) and a set of collective routines such as broadcast, collection and reduction. Programming interfaces for C and Fortran are provided. Because of the minimal assumptions about the underlying hardware, GPSHMEM does not implement the full SHMEM T3D interface. The lack of a few functions is compensated by a set of extensions, including dynamic memory allocation for Fortran 77. To ease porting of SHMEM-enabled scientific Fortran 77 code from the Cray machines to use with GPSHMEM, a specialized Fortran 77 preprocessor was designed and developed.