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From: wlrush@water.waterloo.edu (Wenchantress Wench Wendall)
Newsgroups: ont.events,uw.talks,uw.cs.grad
Subject: MASTER'S ESSAY PRESENTATION
Keywords: Mr. T. Cifelli, graduate student, Dept. of Comp. Sci., Univ. of Waterloo
Message-ID: <2820@water.waterloo.edu>
Date: 7 Dec 89 16:37:48 GMT
Distribution: ont
Organization: U of Waterloo, Ontario
Lines: 37


DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES

MASTER'S ESSAY PRESENTATION

                    -Tuesday, December 12, 1989

Mr.  T.  Cifelli,  graduate  student, Dept. of Computer
Science,  will  speak  on  ``A  Multicast Communication
Protocol for Shoshin.''

TIME:                 2:30 p.m.

ROOM:                 DC 1304

ABSTRACT

This  presentation  suggests  a  design  for  efficient
1-to-N  Inter-Process  Communication (IPC) for Shoshin.
The  programming  entities  of client, server, and peer
have  been  generalized  to  be  one or more processes.
They  may be organized into groups and addressed with a
single  group  identifier  (GID)  as  targets  for  the
multicast  IPC.   The nsend primitive has been added to
the  IPC repertoire and allows application processes to
send messages to either individual processes or process
groups.   The  existing  brecany  primitive  is used to
receive messages sent using nsend.  The nsend primitive
does not provide the same reliability guarantees as the
existing  bsend primitive, which only allows sending to
indiviual  processes.   The  1-to-N  IPC  covers  three
communication    domains:     processors    within    a
multiprocessor, Ethernet LAN, and the Campus Internet.

                    December 7, 1989