When setting up Hugepages are both PGA and SGA sizes relevant or just SGA?

New servers with 32 gig of RAM running 64 bit OEL 5.1.
Going thru linux kernel config aka Red Hat/Puschitz Tuning guide. Will be supporting both 10.2 and 11.1 database.
I am thinking of using 24 gig of memory for Hugepages but not sure if the Hugepage memory is only for SGA or also PGA?
Thanks in advance!

I recommend Christo Kutrovsky's "The Answer to Free Memory, Swap, Oracle, and Everything" presentation for several important Hugepages and Oracle points;
http://www.pythian.com/blogs/741/pythian-goodies-free-memory-swap-oracle-and-everything

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