Oracle International Corporation

Mohammad Arslan Zulfiqar

Pranay Koka

Herbert Dewitt Schwetman, Jr

Jeff Diamond

Each computing node of a distributed computing system may implement a hardware mechanism at the network interface for message driven prefetching of application data. For example, a parallel data-intensive application that employs function shipping may distribute respective portions of a large data set to main memory on multiple computing nodes. The application may send messages to one of the computing nodes referencing data that is stored locally on the node. For each received message, the network interface on the recipient node may extract the reference, initiate the prefetching of referenced data into a local cache (e.g., an LLC), and then store the message for subsequent interpretation and processing by a local processor core. When the processor core retrieves a stored message for processing, the referenced data may already be in the LLC, avoiding a CPU stall while retrieving it from memory. The hardware mechanism may be configured via software.

System and method for performing message driven prefetching at the network interface

A system and method for providing a cache virtual partition to a data structure that includes receiving, at an address remapping device, a cache-check request including a memory address including bits, identifying, using a virtual partition table, the virtual partition by determining that the memory address falls within a data structure memory address range, obtaining a copy of virtual partition bits which include a portion of the bits, appending the copy of the virtual partition bits to the memory address, rewriting the virtual partition bits to obtain rewritten virtual partition bits corresponding to the virtual partition, and generating a remapped memory address by replacing the virtual partition bits with the rewritten virtual partition bits. The remapped memory address includes the copy of the virtual partition bits and rewritten virtual partition bits. The method also includes transmitting a remapped cache check request including the remapped memory address to the cache.

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Madison, WI, United States of America

Mohammad Arslan Zulfiqar