Newsgroups: comp.parallel.pvm
From: Ron.Levkovitz@brunel.ac.uk (Ron Levkovitz)
Subject: Communication in PVM
Keywords: 
Message-ID: <CtyHz6.Gs8@brunel.ac.uk>

Organization: Brunel University, Uxbridge, UK
X-Newsreader: TIN [version 1.2 PL2]
Date: Wed, 3 Aug 1994 11:16:17 GMT
Lines: 19


  Hi,    I am building a matrix solver that uses a square grid of processors
  organized in columns.  Once in a while I need to collect the data from 
  the processors in a column to the diagonal or to distribute data from the 
  diagonal to the column.  This is done on all processor columns together.
  I am not sure which communication strategy is best.  I have decided to try
  a double ring ( a ring that transmit in both direction). However, I was also 
  considering treating each processors column also as an incomplete binary
  tree and to collect the data in that way.  Can anybody contribute from his
  experience and advice me for the best method (I am using a cluster of work
  stations).


  Thanks

  Ron LEvkovitz
  mastrrl@brunel.ac.uk
    


