I experienced the same problem as described here. I solved the problem by removing the "log" command from the bayes block of my nexus files. I don't think mpich likes the command. Just in case it helps anyone. Zack zhyde at pdx.edu Shaila Parashar wrote: > Hi > > I am not sure whether this is the right mailing list to address this > issue. Actually, I am a unix sytem admin, who has been requested to > install MrBayes on our cluster. > We have 4 SUN machines running Solaris 9. We have mpich-1.2.6 running > and is being used extensively. We are not using passwordless ssh , but > instead are using rsh. Students have not faced any problems in using > mpich. > Now I have installed the mpi version of MrBayes on one of the machines > and then ran a program called sample.nex > It gave me the following error > > p1_9962: p4_error: interrupt SIGSEGV: 11 > > I have not been able to find the reason and solution for that error. > Any suggestions/ideas would be greatly appreciated. A lot of our > research work depends on getting this to work correctly. > The problem is in the reasembeling of the tree file. I've tried to fix the bug, but without luck. I suspect it has something to do with stalled data in NFS. There is a new version at mrbayes.sf.net I haven't tried it yet but it might fix the problem. > If this is not the right mailing list, can any of you please direct me > to the right mailing list to address this issue. > > Thanks in advance > > Shaila > > -- Mvh|Regards, Lars System Administrator, Phone: 3532 1349, Room: 318 Bioinformatics Centre, University of Copenhagen, Universitetsparken 15 DK-2100 Copenhagen DENMARK -- ____________________________ Zachary D. Hyde 503-232-5492 zackhyde at gmail.com "The odds against life evolving randomly were astronomical. But so is the size of the universe."