Re: [Valgrind-users] cachegrind: power of two restriction

[Nicholas N. <nj...@cs...>]

On Fri, 20 Jun 2008, Marco Ehlert wrote:

> 1) Hardware L2 cache size of 6MB is not recognized and
> a default of 256MB assumed
>
> 2) setting caching sizes manually fails with a "power of two"
> problem
>
> valgrind --L2=6291456,8,64 --tool=cachegrind
>
> error: L2 size of 6291456B not a power of two; aborting.
>
> How can I overcome this ?

You can't without rewriting the code in cachegrind/cg_sim.c to handle 
non-powers-of-two.

Easier would be to run it using 4MB and 8MB and interpolate the results...

Nick