Intel Corporation

Cray Incorporated

Howard Pritchard

Robert L Alverson

Edwin Froese

Dennis Charles Abts

Steven Lee Scott

Duncan Roweth

Charles A Giefer

Eric P Lundberg

Igor Gorodetsky

A multiprocessor computer system comprises a first node operable to access memory local to a remote node by receiving a virtual memory address from a requesting entity in node logic in the first node. The first node creates a network address from the virtual address received in the node logic, where the network address is in a larger address space than the virtual memory address, and sends a fast memory access request from the first node to a network node identified in the network address.

Extended fast memory access in a multiprocessor computer system

An improved method for the prevention of deadlock in a massively parallel processor (MPP) system wherein, prior to a process sending messages to another process running on a remote processor, the process allocates space in a deadlock-avoidance FIFO. The allocated space provides a 'landing zone' for requests that the software process (the application software) will subsequently issue using a remote-memory-access function. In some embodiments, the deadlock-avoidance (DLA) function provides two different deadlock-avoidance schemes: controlled discard and persistent reservation. In some embodiments, the software process determines which scheme will be used at the time the space is allocated.

Apparatus and method for deadlock avoidance

Method and apparatus for deadlock avoidance

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Santa Fe, NM, United States of America

Howard Pritchard