When are diskless compute nodes inappropriate?

Mark Hahn hahn at physics.mcmaster.ca
Thu Jul 17 13:39:04 EDT 2003


as everyone said: local disks suck for reliability, but are simply
necessary if you're doing any kind of sigificant file IO, especially
checkpoints.

IMO, that means diskless net-booting with local swap/scratch.

> write(read) performance.  RaidO (using Linux MD device) can get you
> 60(80) MB/s write(read) performance.  Sure, this is less than a 200 MB/s

of course, MD can give you much higher raid0 if you use more than two disks;
it's not hard to hit 200 MB/s.

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