Hello: I'm still struggling to get performance from PGI that's close to local single-disk I/O speeds.
Presently, on my newly-rebuilt cluster with orangefs 2.8.6 clients / 2.8.5 servers (3), I am seeing about 68% CPU core loading from pvfs2-client-core, and about 11MB/s throughput on the network. In other tests, trying to copy a 10gb file from pvfs to local, I maxed out at about 30MB/s, with 20MB/s more typical. I feel I should be seeing significantly better speeds than this...And that pvfs should not be so client-cpu-intensive. Suggestions as to how to debug? I'm also getting reports from users that they note a significant runtime improvement of their jobs if they switch from using pvfs2 to using NFS home directories...I also think that should be wrong. Thanks! --Jim _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
