On Fri, Jun 20, 2008 at 03:33:19PM -0400, Lawrence Stewart wrote: > More specifically for HPC, linux seems designed for the desktop, and > for small > memory machines. Many of the decisions that made good sense in the '90s
In case of embedded-RAM nodes 'small' most likely would be ~MByte sized. In that case, Linux is indeed quite unsuitable for small memory machines. You'd end up burning almost all of your silicon real estate just for the OS, which would also be a large overkill for the kind of asynchronous message passing object soup you'd have on that hardware. (A minimal Forth or Lisp OS would be probably more suitable). > make no sense now. 512 byte disk sectors? 4096 byte pages? Randomly In case of embedded-RAM nodes, most nodes would have no disk at all. Nor swap. > allocated physical memory? "large page" patches on small pages? > All sorts of dinky little tasks waking up and generating OS noise to > clobber > your collectives? -- Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
