## 3.2. Linux Systems using IBM MPI

In what follows, we assume that Autodyn and IBM MPI files are installed on host1, in a directory named /usr/ansys_inc/, and that this directory is NFS mounted on all other hosts (with the same mount point). To NFS mount this directory, add the following line to the file /etc/fstab on each host (except host1):

    host1: /usr/ansys_inc/     /usr/ansys_inc/    nfs    defaults   0   0

/etc/fstab may have a different name for other Linux systems

Following the normal installation procedures for Autodyn products, all Autodyn files will be installed in /usr/ansys_inc/v182/autodyn/. In particular, the Autodyn master and slave executables (autodyn and adslave) will reside in the directory /usr/ansys_inc/v182/autodyn/bin/linx64.

After installing Autodyn and IBM MPI on all the cluster machines, the environment variable MPI_ROOT can be set to be the directory where IBM MPI is installed and the path to the MPI_ROOT/bin directory added to the path environment variable. These changes are not required to run Autodyn in parallel, but when set they will override the defaults used by Autodyn.

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