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Sent: Thu, August 5, 2010 6:02:02
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Subject: ESPResSo Digest, Vol 39, Issue 2
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Today's Topics:
1. parallel computing (Mikheil Azatov)
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Message: 1
Date: Wed, 4 Aug 2010 11:16:29 -0400
From: Mikheil Azatov <
address@hidden>
Subject: [ESPResSo] parallel computing
To:
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Message-ID:
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Content-Type: text/plain; charset="iso-8859-1"
Hi,
I'm very new to parallel computing and know very little
about it so far. I
installed lam 7.1.4 on my computer and tried building espresso
(--with-mpi=MPI option) but i got a lot of errors like this:
maggs.c:(.text+0x190be): undefined reference to `ompi_mpi_comm_world'
maggs.c:(.text+0x190e4): undefined reference to `MPI_Irecv'
maggs.c:(.text+0x19109): undefined reference to `ompi_mpi_comm_world'
maggs.c:(.text+0x1953c): undefined reference to `ompi_mpi_comm_world'
maggs.c:(.text+0x19542): undefined reference to `ompi_mpi_op_sum'
maggs.c:(.text+0x19547): undefined reference to `ompi_mpi_double'
maggs.c:(.text+0x19561): undefined reference to `MPI_Allreduce'
maggs.c:(.text+0x198e8): undefined reference to `ompi_mpi_comm_world'
maggs.c:(.text+0x198ee): undefined reference to `ompi_mpi_op_max'
maggs.c:(.text+0x198f3): undefined reference to `ompi_mpi_double'
maggs.c:(.text+0x1990d): undefined reference to `MPI_Allreduce'
maggs.c:(.text+0x19ca7): undefined reference
to `ompi_mpi_comm_world'
maggs.c:(.text+0x19cad): undefined reference to `ompi_mpi_op_sum'
maggs.c:(.text+0x19cb2): undefined reference to `ompi_mpi_double'
maggs.c:(.text+0x19cbc): undefined reference to `MPI_Allreduce'
maggs.o: In function `Maggs_init':
maggs.c:(.text+0x1a3c7): undefined reference to `ompi_mpi_comm_world'
maggs.c:(.text+0x1a3cd): undefined reference to `ompi_mpi_op_sum'
maggs.c:(.text+0x1a3d2): undefined reference to `ompi_mpi_double'
maggs.c:(.text+0x1a3dc): undefined reference to `MPI_Reduce'
maggs.o: In function `prepare_surface_planes':
maggs.c:(.text+0x4915): undefined reference to `MPI_Type_commit'
I also tried installing openmpi but got the same...
I was wondering if anyone could help me to make parallel computing work, or
maybe show me the manual of how to do this. Any help would be really
appreciated because I don't even know where to start.
I was thinking first to make both
CPU's on my computer work together and
then try running on several computers.
Thanks a lot,
Mikheil Azatov
University of Maryland
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