Re: [bgl-discuss] BGL compute node available memory

[Andrew Siegel <siegela@xxxxxxxxxxx>]

your app can claim very close to the 512Mb limit (not sure how exact an
answer you're looking for). We have tools from IBM to diagnose when you've
gone too far if that's your concern.

On Tue, 20 Sep 2005 chad@xxxxxxxxxxx wrote:

> How much physical memory is available to a running process on a BGL
> compute node? I've searched google and the ML archive, but so far all I've
> found is this:
>
> http://www-unix.mcs.anl.gov/~beckman/bluegene/SSW-Utah-2005/BGL-SSW03-CNK-CIOD.pdf
>
> It shows that the CNK comprises four 256K pieces, and it also shows the
> opposite end of memory being reserved for memory-mapped devices (but not
> how much is reserved), with the application occupying the space in
> between.
>
> Mainly, I'm trying to figure out (at least roughly) how much scalar data I
> could fit into a single compute node.
>
> Thanks,
> ccg
>
>
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