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DK, Thanks for the explanation about mvapich and mpich - I've checked and I'm definitely using mpich.<br>Bill, I have now ensured that the directories are all the same on both computers, and these directories contain the same files, but they're not linked by nfs - is this necessary? (I'm hoping not, because setting up nfs is somewhat beyond my skills!)<br><br>Just a reminder about this specific problem:<br>mpiexec -n 8 /home/me/software.ex<br><br>produces the following error:<br>MPIR_Init_thread(310): Initialization failed<br>MPID_Init(113).......: channel initialization failed<br>MPIDI_CH3_Init(244)..: process not on the same host (quad != december)Fatal error in MPI_Init: Other MPI error, error stack:<br><br>And running:<br>mpirun_rsh -hostfile ./machinefile -n 8 /home/me/software.ex > job.out 2> job.err<br><br>produces the same error.<br><br>Help is very gratefully received!<br><br>Thanks!<br>James<br> <br /><hr />Get a free e-mail account with Hotmail. <a href='http://clk.atdmt.com/UKM/go/197222280/direct/01/' target='_new'>Sign-up now.</a></body>
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