Newsgroups: comp.parallel
From: jeckstei@rutcor.rutgers.edu (Jonathan Eckstein)
Subject: Re: Parallel prefix sums
Summary: Book by Blelloch
Organization: Rutgers University
Date: 21 Dec 1995 03:36:18 GMT
Message-ID: <4bakni$p23@onramp.arc.nasa.gov>


There is a book by Guy Blelloch that is basically the "bible"
for parallel prefix.  I think you can do log(n) steps on a 
hypercube-type machine: send to the processor 1 away, then 2
away, then 4, etc. with an addition at each step.  It doesn't
seem intuitive to me that you could do much better.

-- Jonathan


   AUT   AUTHOR Blelloch, Guy E.
    TITLE Vector models for data-parallel computing / Guy E. Blelloch.
PUBLISHER Cambridge, Mass. : MIT Press, c1990.
  DESCRIP xvi, 255 p. : ill. ; 24 cm.
   SERIES Artificial intelligence * Artificial intelligence (Cambridge, Mass.)
    NOTES Includes bibliographical references (p. 243-249) and index.
 SUBJECTS Vector processing (Computer science) * Parallel processing
          (Electronic computers)
  LC CARD    90039401
     ISBN 026202313X
  RLIN ID G90-B43129


