From: Lars Rzymianowicz Newsgroups: comp.parallel.mpi Subject: Re: Linux MPI_BCAST Problem Date: Mon, 21 Jun 1999 08:44:39 +0200 Organization: Dept. of Computer Engineering, University of Mannheim, Germany Message-Id: <376DDF57.7AA1DBE0@ti.uni-mannheim.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Xref: ukc comp.parallel.mpi:5233 Will Reed wrote: > I have a large numerical code written in F90 that I'm trying to run in > linux (RH6 cluster -- 12 proc, ch_p4). The code works on SGI O2k under > SGI's MPI implementation. Unfortunately, I have been unable to run it > under linux because I get the following runtime error: (mpirun -np 4 in > this case) > > p2_2229: p4_error: interrupt SIGSEGV: 11 > rm_l_2_2230: p4_error: interrupt SIGINT: 2 > p1_5730: p4_error: interrupt SIGSEGV: 11 > rm_l_1_5731: p4_error: interrupt SIGINT: 2 > p3_2232: (5.008455) Trying to receive a message when there are no > connections; Bailing out > bm_list_5727: p4_error: net_recv read: probable EOF on socket: 1 Hi Will, the segmentation fault is normally called by accessing a wrong address. Have you checked the parameters of the Bcast? If it's the first process, you could start a debugger too (mpirun -xxgdb). Strange that it works under SGI... Lars -- Address: University of Mannheim; B6, 26; 68159 Mannheim, Germany Tel: +(49) 621 292-1619, Fax: -5597 email: larsrzy@{ti.uni-mannheim.de, atoll-net.de, computer.org} Homepage: http://mufasa.informatik.uni-mannheim.de/lsra/persons/lars/