Message-Id: <3659289A.5F1AF9BE@dolphinics.com> Date: Mon, 23 Nov 1998 09:19:22 +0000 From: James Cownie Organization: Dolphin Interconnect Solutions Mime-Version: 1.0 Newsgroups: comp.parallel.mpi Subject: Re: Environment Variables and MPI ? References: <3655E622.B7C2E475@LL.MIT.EDU> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Michael Starkie wrote: > > Is it possible to set environment variables for MPI programs WITHOUT > having to code them into the MPI programs. > > Do established applications that use scripts to set up their environment > before execution have to be re-written in order to link and use the MPI > ? Wow !! > > -- > Cordially, > Michael Starkie The MPI standard makes no statements at all about environment variables, (just as it makes no statements about how other operating system issues). If you're starting your program on a Unix machine most MPI systems seem to ensure that the environment is available to (at least) the first process (rank 0 in COMM_WORLD). If you need environment values elsewhere, pass them over. This was discussed (with sample code fragments) a month or two ago, so Dejanews should be your friend... -- Jim James Cownie Dolphin Interconnect Solutions +44 117 9071438 http://www.dolphinics.com/toolworks