From: Pascal Proulx Newsgroups: comp.parallel.mpi Subject: Re: Broadcast and Receive in MPI Date: Mon, 15 Mar 1999 09:59:36 -0500 Organization: Computing Devices Canada Message-Id: <36ED2058.F9D95E8B@cdott.com> References: <7c11ba$i1b$1@news3.tufts.edu> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------1F1A592D449E78FC43EEF1B9" Xref: ukc comp.parallel.mpi:4753 This is a multi-part message in MIME format. --------------1F1A592D449E78FC43EEF1B9 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit If you use MPI_Bcast to send a message, you need to use MPI_Bcast to receive it on the slave processors. Actually, the MPI_Bcast function uses a parameter that specifies the sender of the message. That process will send (Broadcast) the data but won't be receiving the data. All the other processors of that communicator (let's say MPI_COMM_WORLD) will receive that data. For a good ref. see: Using MPI by Gropp, Lusk and Skjellum, chapter 3 Good luck! Pascal Sanpawat Kantabutra wrote: > Hello, > I am new to MPI and would like to know if I want my process to > broadcast a message to the other processes, what MPI command should > I use ? I tried to use bcast(...) with the broadcaster and use > recieve(...) at the broadcastees but it did not work. Is this > possibly a mismatch ? What is the right way to do it ? Any advice > is appreciative. -Sanpawat > ---------------------------------------- > Perpetual optimism is a force multiplier --------------1F1A592D449E78FC43EEF1B9 Content-Type: text/x-vcard; charset=us-ascii; name="vcard.vcf" Content-Transfer-Encoding: 7bit Content-Description: Card for Pascal Proulx Content-Disposition: attachment; filename="vcard.vcf" begin: vcard fn: Pascal Proulx n: Proulx;Pascal org: Computing Devices Canada, a General Dynamic Company email;internet: pascal.proulx@cdott.com title: Software Engineer x-mozilla-cpt: ;0 x-mozilla-html: FALSE version: 2.1 end: vcard --------------1F1A592D449E78FC43EEF1B9--