Direct memory access in a hybrid computing environment

Details Direct memory access in a hybrid computing environment Direct memory access in a hybrid computing environment

2011-08-30

2011-08-30

Hafiz, Tariq (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S008000, C710S015000, C710S033000, C710S052000

Reexamination Certificate

active

08010718

ABSTRACT:
Direct memory access (‘DMA’) in a hybrid computing environment that includes a host computer, an accelerator, the host computer and the accelerator adapted to one another for data communications by a system level message passing module, where DMA includes identifying, by the system level message passing module, a buffer of data to be transferred from the host computer to the accelerator according to a DMA protocol; segmenting, by the system level message passing module, the buffer of data into a predefined number of memory segments; pinning, by the system level message passing module, the memory segments against paging; and asynchronously with respect to pinning the memory segments, effecting, by the system level message passing module, DMA transfers of the pinned memory segments from the host computer to the accelerator.

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