CHAOS: Linux from Livermore
The four problems that the distinctive extra features of CHAOS address are:
The CHAOS operating system kernel is based on commercial Red Hat kernel releases instead of generic "stable Linux kernel releases" to provide a (more) reliable, predictable, focused way to both fix errors and report new-found problems. LC has modified the Red Hat kernel to support the special computing needs of LLNL users with (a)added or updated device drivers, (b)increased resource limits (for example, CHAOS allows 8192 instead of just 1024 file descriptors per process), (c)crash dump support to manage trouble during big production runs, (d)serial console logging, and (e)changes to enable parallel debugging tools like TotalView.
To determine which version of CHAOS an LC machine is currently running, execute
and look in the third field (from the left) in the output line returned. If that field contains
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