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DOE OSTI · 1129212

Low latency, high bandwidth data communications between compute nodes in a parallel computer

Blocksome, Michael A
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Abstract

Methods, systems, and products are disclosed for data transfers between nodes in a parallel computer that include: receiving, by an origin DMA on an origin node, a buffer identifier for a buffer containing data for transfer to a target node; sending, by the origin DMA to the target node, a RTS message; transferring, by the origin DMA, a data portion to the target node using a memory FIFO operation that specifies one end of the buffer from which to begin transferring the data; receiving, by the origin DMA, an acknowledgement of the RTS message from the target node; and transferring, by the origin DMA in response to receiving the acknowledgement, any remaining data portion to the target node using a direct put operation that specifies the other end of the buffer from which to begin transferring the data, including initiating the direct put operation without invoking an origin processing core.

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97 MATHEMATICS AND COMPUTING

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BibTeXRIS

Blocksome, Michael A. 2014-04-22. Low latency, high bandwidth data communications between compute nodes in a parallel computer. https://www.osti.gov/biblio/1129212

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