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DOE OSTI · 1072240

Typhoon IB Performance

Coulter, Susan K.·Grunau, Daryl W.
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Abstract

While running fundamental IB verbs testing on the Typhoon cluster, it was discovered that IB performance was not satisfactory for a QDR system. The theoretical maximum bandwidth expected on a QDR system is 32Gb/sec. After significant testing and analysis, RDMA read performance was consistently shown to be 50% lower than RDMA write performance, resulting in significantly less than half the theoretical maximum. Thorough testing and analysis identified a BIOS setting as the reason for this behavior.

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BibTeXRIS

Coulter, Susan K., Grunau, Daryl W.. 2013-03-08. Typhoon IB Performance. https://doi.org/10.2172/1072240

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