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Title: OpenSHMEM-UCX : Evaluation of UCX for implementing OpenSHMEM Programming Model

The OpenSHMEM reference implementation was developed towards the goal of developing an open source and high-performing Open- SHMEM implementation. To achieve portability and performance across various networks, the OpenSHMEM reference implementation uses GAS- Net and UCCS for network operations. Recently, new network layers have emerged with the promise of providing high-performance, scalabil- ity, and portability for HPC applications. In this paper, we implement the OpenSHMEM reference implementation to use the UCX framework for network operations. Then, we evaluate its performance and scalabil- ity on Cray XK systems to understand UCX s suitability for developing the OpenSHMEM programming model. Further, we develop a bench- mark called SHOMS for evaluating the OpenSHMEM implementation. Our experimental results show that OpenSHMEM-UCX outperforms the vendor supplied OpenSHMEM implementation in most cases on the Cray XK system by up to 40% with respect to message rate and up to 70% for the execution of application kernels.
 [1] ;  [1] ;  [1] ;  [2]
  1. ORNL
  2. ARM Research
Publication Date:
OSTI Identifier:
DOE Contract Number:
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Resource Relation:
Conference: OpenSHMEM 2016: Third workshop on OpenSHMEM and Related Technologies, Baltimore, MD, USA, 20160802, 20160804
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org:
ORNL work for others
Country of Publication:
United States