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AMBER Archive (2002)Subject: installing MPICH for AMBER on Linux CLuster
From: root (root_at_pc2-117.physchem.uni-freiburg.de)
Greetings,
I am trying to build a linux cluster to run AMBER simulations. While
My system consists of:
Hardware:
1 Linux PC (Athlon 1800) with 2 NIC acting as master
1 Linux PC (SMP dual Athlon 1600) acting as node (more of those to come
1 allied telsyn switch connecting the computers
Software:
Suse Linux 8.0 (kernel 2.2.13) installed on both machines
I added the following modifictions:
I allowed passwordless rsh login between all computers (the tstmachines
I installed MPICH-1.2.4 with options device=ch_p4 and comm=shared
I set up a machines.LINUX file with
> master
Problem:
When I try to run the cpi testprogram with mpirun, it fails when I
mpirun -np 1 /examples/basic/cpi
runs without problem
mpirun -np 2 /examples/basic/cpi
hangs after creating the PI-file:
> running /usr/local/mpich-1.2.4/examples/basic/cpi on 2 LINUX
The PI-file is:
when I switch the two names in the machine file, it also runs with
When I try with -np 3 it also hangs, the PI-file is:
> pc2-117 0 /usr/local/mpich-1.2.4/examples/basic/cpi
I'm afraid as a newbie to Linux I cannot solve this alone. I didn't find
Please mail if anyone has a clue what to try next.
Kind regards,
Thomas
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