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...a couple of the other clients are very busily using Lustre. But still, I would have hoped that this client (abacus) would have regained its connections after a few hours. Any ideas as to what I can do, short of rebooting the client? I am nervous about that leaving incomplete I/O. Thanks, Patrick Shopbell pls at astro.caltech.edu

We have just discovered that a large buffer cache generated from traversing a lustre file system will cause a significant system overhead for applications with high memory demands. We have seen a 50% slowdown or worse for applications. Even High Performance Linpack, that have no file IO whatsoever is affected. The only remedy seems to be to empty the buffer cache from memory by running