Using triggered operations to offload collective communication operations.

Conference · Thu Apr 01 00:00:00 EDT 2010

OSTI ID:1012451

Barrett, Brian W; Hemmert, K Scott; Underwood, Keith Douglas ^[1]

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1. Intel Corporation, Hillsboro, OR

Efficient collective operations are a major component of application scalability. Offload of collective operations onto the network interface reduces many of the latencies that are inherent in network communications and, consequently, reduces the time to perform the collective operation. To support offload, it is desirable to expose semantic building blocks that are simple to offload and yet powerful enough to implement a variety of collective algorithms. This paper presents the implementation of barrier and broadcast leveraging triggered operations - a semantic building block for collective offload. Triggered operations are shown to be both semantically powerful and capable of improving performance.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1012451
• Report Number(s): SAND2010-2809C; TRN: US201110%%102
• Resource Relation: Conference: Proposed for presentation at the EuroMPI 2010 Conference held September 12-15, 2010 in Stuttgart, Germany.
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ALGORITHMS
COMMUNICATIONS
IMPLEMENTATION
PERFORMANCE