Nested parallelism for multi-core HPC systems using Java

Since its introduction in 1993, the Message Passing Interface (MPI) has become a de facto standard for writing High Performance Computing (HPC) applications on clusters and Massively Parallel Processors (MPPs). The recent emergence of multi-core processor systems presents a new challenge for establi...

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Vydané v:Journal of parallel and distributed computing Ročník 69; číslo 6; s. 532 - 545
Hlavní autori: Shafi, Aamir, Carpenter, Bryan, Baker, Mark
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Amsterdam Elsevier Inc 01.06.2009
Elsevier
Predmet:
Applied sciences
Computer science; control theory; systems
Computer systems and distributed systems. User interface
Exact sciences and technology
Java MPI
MPJ
MPJ express
Multi-core messaging
Programming theory
Software
Theoretical computing
MPJ express
Java MPI
Multi-core messaging
MPJ
High performance
Parallel algorithm
JAVA language
Distributed system
Distributed computing
Multicore processor
Multiprocessor
Distributed memory
Communicating process
Message passing
Massive parallelism
Message passing interface
System core
Nested parallelism
Shared memory
ISSN:0743-7315, 1096-0848
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Popis
Shrnutí:Since its introduction in 1993, the Message Passing Interface (MPI) has become a de facto standard for writing High Performance Computing (HPC) applications on clusters and Massively Parallel Processors (MPPs). The recent emergence of multi-core processor systems presents a new challenge for established parallel programming paradigms, including those based on MPI. This paper presents a new Java messaging system called MPJ Express. Using this system, we exploit multiple levels of parallelism–messaging and threading–to improve application performance on multi-core processors. We refer to our approach as nested parallelism. This MPI-like Java library can support nested parallelism by using Java or Java OpenMP (JOMP) threads within an MPJ Express process. Practicality of this approach is assessed by porting to Java a massively parallel structure formation code from Cosmology called Gadget-2. We introduce nested parallelism in the Java version of the simulation code and report good speed-ups. To the best of our knowledge it is the first time this kind of hybrid parallelism is demonstrated in a high performance Java application.
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ISSN:0743-7315
1096-0848
DOI:10.1016/j.jpdc.2009.02.006