公开(公告)号：JP2003216592A

公开(公告)日：2003-07-31

申请号：JP2002275672

申请日：2002-09-20

Applicant: IBM

Inventor： ARNDT RICHARD LOUIS ,  CRADDOCK DAVID F ,  GREGG THOMAS A ,  JUDD IAN DAVID ,  PFISTER GREGORY FRANCIS ,  RECIO RENATO JOHN ,  DONALD WILLIAM SCHMIDT

IPC: G06F15/17 ,  G06F9/54 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To provide some optimizing techniques for sending a work request from a consumer to a channel adapter hardware, and method, device and program for sending a work completion to the consumer. SOLUTION: A distributed computing system having host and I/O end nodes, switches, routers and links interconnecting these components is provided. The end nodes use a pair of transmission/reception queues to transmit/receive messages. The end nodes use completion queues to inform the end user when messages have been completely sent or received and whether an error occurred during the message transmission or reception process. A mechanism for controlling the transfer of the work requests from the consumer to the channel adapter hardware by using only head pointers in the hardware is described. COPYRIGHT: (C)2003,JPO