[Beowulf] rhel page_size

[Håkon Bugge]

On Jan 22, 2010, at 21:14 , Michael Di Domenico wrote:

> Nope, haven't gotten that far yet.  I seemed to recall (or atleast i
> thought i had) that i could easily change the page size during kernel
> compile.  perhaps that was way back in the day or i'm just losing it.
> figured it'd be a quick easy test...  guest not... :(

I used libhugetlbfs today with success, followed more or less this recipe: http://www.ibm.com/developerworks/systems/library/es-lop-leveragepages/

Huge malloc's could then take advantage of the huge page support on your CPU (2MB on x86_64) and you do not need any kernel/apps recompilation.


Håkon