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I'm using starcluster to manage an MPI cluster for parallel
scientific computation. I don't want to use the pre-installed
OpenMPI environment since the executables ? have to use are compiled
with Intel softwares. So I have my private CentOS AMI created from
aws console with all the Intel environment pre-installed. The
problem is that IntelMPI uses by default ssh connectivity without
password authentication to make nodes communicate amoung them to
work. I want to know if there is some feauture in the config
starcluster file such that ssh connectivity intra nodes comes pre
setted with rsa authentication. I have read that this feauture
should be enabled by default with the sgeadmin user, but when i
launch the cluster at a certain point I received this error:
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!! ERROR - Error occured while running plugin
'starcluster.clustersetup.DefaultClusterSetup':
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!!! ERROR - Cannot create user: (uid: 0, gid: 0). This is caused by
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!!! ERROR - <i class="moz-txt-slash"><span class="moz-txt-tag">/</span>home<span
class="moz-txt-tag">/</span></i> directory being owned by root.
To fix this you'll
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!!! ERROR - need to create a new AMI. Note that the instance is
still
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!!! ERROR - up.
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and neither the user sgeadmin is created neither the /etc/hosts file
is filled with the names and IPs of all nodes of the cluster.
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