Newsgroups: comp.parallel.pvm,comp.parallel
From: Antonio Scotti <scotti@centauro.upc.es>
Subject: [Q]:Memory Access and Efficiency of parallel (PVM) programs
Organization: Universitat Politecnica de Catalunya
Date: Tue, 31 Oct 1995 15:46:56 GMT
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <475gdg$spf@diable.upc.es>

Hello folk
let's say one has a parallel program written according to the
master/slave computational model.
This program needs to read data, say one or more big matrixes,
stored on disk, which need to be passed to the slaves too. 
Which of the following is more efficient and why?:

1) Having the master reading the matrix(es) and multicast it(them)
   to all the slaves.

2)Having each slave to access the memory to retrieve the data it needs? 

3) .... any suggestions?

Cheers

-- Antonio


============================================================
= Antonio Scotti                                            =
= CIMNE                                                     =     
= International Centre for Numerical Methods in Engineering =
= Universitat Politecnica de Catalunya, Campus Norte        =
= s/n Gran Capita`, Edificio C1                             =
= Barcelona, Spain                                          =
=                                                           =
= phone: ++ 34 3 401.74.03                                  =
= E-mail: scotti@centauro.upc.es                            =
=============================================================

