From: Thomas Fuerle Newsgroups: comp.parallel.mpi Subject: Re: MPICH & linuxThreads Date: Fri, 26 Mar 1999 09:29:26 +0100 Organization: Vienna University, Austria Message-Id: <36FB4566.EA67ED88@vipios.pri.univie.ac.at> References: <36FA46EC.A672CC61@di.unipi.it> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Xref: ukc comp.parallel.mpi:4844 Alberto Lucchesi wrote: > Hello, > > My parallel program ( a FARM ) implemented with MPICH and LinuxThread > don't' work > on a PC cluster. > Anyone know if is possible to work wich MPICH & linuxThreads ??? > 1.) I have compiled mpich.1.1.2 with the option listenersig=SIGUNSED (quick&dirty hack, because this signal is unused in linux), that threads and mpich donīt interfere each other anymore. 2.) I also introduced critical sections, where I use mutal exclusion (pthread_mutex_lock/unlock), e.g. for Send, Receive, Probe, etc. that only one MPI function can be active at any time. I just a workaround, but it works fine for me. Regards, Tom > > If yes, can you attach a little example ? > > Many many thanks for your attention > > -- > - Alberto Lucchesi --> lucches@cli.di.unipi.it > lucches@di.unipi.it > > P.S. I am sorry for my bad English :-) -- Thomas Fuerle mailto:fuerle@vipios.pri.univie.ac.at http://vipios.pri.univie.ac.at Institute for Applied Computer Science and Information Systems University of Vienna, Rathausstr. 19/4, A-1010 Vienna, Austria Tel: +43 1 4277 38423