Efficient User-Level Communication on Multicomputers Protocol with an Optimistic Flow-Control J. William Lee Science and Engineering WA 98195 Seattle, Department University of Computer of Washington, jinling~cs. washington.edu Introduction This paper proposes and evaluates (e.g., two on any interface was techniques multicomroutin the mul- each sages, sages sages. buffer processor and quickly, In space reduce the may only send room case, a limited may for more number incoming have in this of mesmesmesenough common each optiprocesmessages. to the sender other processors common consume these making to receive the cost for efficient puter ing with network) user-level a reliable and/or domain. two commercial with communication network a network This work processors a wormhole protected messages. of flow-control protocol medium in which messages To case, a privileged following First, ticomputers vaiive sends cessor These example, several three ically message the is intrinsic Second, ically traps, sible to nel/user quire to achieve We two cross upcalls, for the data motivated systems by for we designed sends without enough runs a flow-control both short and that ensuring buffer out the observations. communication networks that processor mistically, sors have typically use con.seronly proFor on sends or long dramatthat [2]. typther the destination to receive
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