[Beowulf] Building a new cluster - seeking some advice
hahn at mcmaster.ca
Sat Dec 22 10:01:21 PST 2007
> if you pushed it it could lock up your system, but maybe adequate to
> keep your system from locking up if you run barely over, rarely.
we actually aim our cluster nodes to fail a job fast if the user code
tries to use too much memory, rather than limp along at 50x slowdown.
I suppose that a bit harsh, but we also provide a wide range of
> with 8 GB flash memory holding the OS and several GB of userspace. A
> whole new kind of thin.
certainly appealing for laptops and thin clients. I think we're in a funny
stage wrt general desktops and up, though: if you want serious storage,
flash isn't even on the table. but probably your serious storage should be
over a fast network connection, rather than on the desktop or compute node.
> Built in would have certain advantages -- USB fobs are too easy to knock
> off and are regrettably slow. For clusters I'm not sure -- they are
PATA/SATA-interface flash is accelerating, I think. Intel just introduced
a building block for that, and other vendors have had somewhat obscure
products out for a long time. a flash-based "PATA-fob" seems reasonably
secure to me for this kind of minimal case. 2.5 and 3.5" form-factors for
larger flash-based disks are also popular.
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