[Beowulf] rhel page_size

Michael Di Domenico mdidomenico4 at gmail.com
Fri Jan 22 14:26:31 EST 2010


We'd like to run an experiment and see if MAGMA will run any
faster/better/different with a larger page size.

On Fri, Jan 22, 2010 at 1:56 PM, Alex Chekholko <chekh at pcbi.upenn.edu> wrote:
> On Fri, 22 Jan 2010 13:33:08 -0500
> Michael Di Domenico <mdidomenico4 at gmail.com> wrote:
>
>> does anyone know if it's still possible to change the default
>> page_size from 4k to something larger on RHEL v5 x86_64?
>>
>> My efforts to recompile the kernel with a larger page size are failing
>> me, but i might be doing it wrong...
>
> Hi Michael,
>
> What are you actually trying to accomplish?
>
> These links may be relevant:
> http://en.wikipedia.org/wiki/Page_(computer_memory)#Huge_pages
> http://dank.qemfd.net/dankwiki/index.php/Pages
>
> One place where this comes up is trying to increase the blocksize of
> ext3; my understanding is that it's not possible in practice:
> http://en.wikipedia.org/wiki/Ext3#cite_note-7
>
> Regards,
> --
> Alex Chekholko   chekh at pcbi.upenn.edu
>

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