Cluster OpenMP and the Gaussian code: a preliminary performance analysis

Rui Yang, Jie Cai, Alistair Rendell, V. Ganesh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The Intel Cluster OpenMP (CLOMP) compiler and associated runtime environment offer the potential to run OpenMP applications over a few nodes of a cluster. This paper reports on our efforts to use CLOMP with the Gaussian quantum chemistry code. Sample results on a four node quad core Intel cluster show reasonable speedups. In some cases it is found preferable to use multiple nodes compared to using multiple cores within a single node. The performances of the different benchmarks are analyzed in terms of page faults and by using a critical path analysis technique.
Original languageEnglish
Title of host publicationEvolving OpenMP in an Age of Extreme Parallelism.
EditorsM.S. Muller, B.R. de Supinski, G.M. Chapman
ISBN (Electronic)978-3-642-02303-3
ISBN (Print)978-3-642-02284-5
Publication statusPublished - 2009
Externally publishedYes
Event5th International Workshop on OpenMP, IWOMP 2009 - Dresden, Germany
Duration: 3 Jun 20095 Jun 2009

Publication series

NameLecture Notes in Computer Science


Conference5th International Workshop on OpenMP, IWOMP 2009

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