Odin: Design and Evaluation of a Single Address Space Multiprocessor.

Odin is a new high performance single address space multiprocessor design. The contribution of this investigation is the synthesis of three important new methods into a unified system which maximises data locality and significantly reduces data access latencies. To achieve high performance Odin uses a segmented stack to maintain data locality after thread migration, and a memory mapping that discriminates between shared and local data structures. When these techniques fail to provide optimal locality high speed access to data is provided by a new hardware based fine grain consistency protocol. This approach reduces false sharing and network usage while improving data locality. Keywords: Single address-space, multiprocessor design, simulation, evaluation. 1. Background Odin, like the Stanford DASH[12], KSR1[1], DDM[10] and other recent DSM architectures, is constructed from a large number of identical processing nodes connected together by high speed bi-directional links. The design ..