Re: [Fastlibnt-devel] ssfft progress report

[Development l. f. F. <fas...@li...>]

Are you compiling with all the G5 compiler options:

-mcpu=970 -mtune=970 -mpowerpc64 

Also, what version of gcc do you have on your G5? 

Apparently at the Apple developer site you can
download a version specially tuned for the G5. Dunno
if it is better than just the latest gcc from the web
though. Never used a MAC.

Bill.

--- Development list for FLINT
<fas...@li...> wrote:

> 
> On Apr 17, 2007, at 7:52 AM, Development list for
> FLINT wrote:
> 
> > Have you got the L1 cache size set correctly for
> the
> > G5? Isn't it 32000.
> 
> That's not the issue. The G5 speed problems are
> across the board,  
> including cases that easily fit into L1.
> 
> I just ran a subset of test cases again on the G5
> just as a sanity  
> check. Got similar results.
> 
> Interestingly, on the G5, the case n = 3 is actually
> pretty good. On  
> the other platforms, n = 3 was generally quite poor.
> 
> David
> 
> 
>
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