Our F13 cluster is primarily used to run OpenMPI applications. I installed a virtual guest using the instructions at : http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/part-Virtualization-Installation.html to do some development builds of a package I use and now OpenMPI jobs fail to start with : [bubbles.hooperlab][[55228,1],0][btl_tcp_endpoint.c:638:mca_btl_tcp_endpoint_complete_connect] connect() to 192.168.122.1 failed: Connection refused (111) on node 0, bubbles 192.168.122.1 belongs to virbr0 on bubbles bubbles and all of the compute nodes are on 192.168.0.* If I take down virbr0 on bubbles everything works. Where might things be going wrong?
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