[Beowulf] rhel page_size

Alex Chekholko chekh at pcbi.upenn.edu
Fri Jan 22 13:56:28 EST 2010


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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