On Jun 9, 2008, at 10:36 PM, mabshoff wrote:
>> Okay, I can confirm that with sage 3.0.1, sage -gp has the same speed
>> as my standalone GP build. So mostly likely the change to GMP 4.2.2
>> introduced a speed regression (probably the core 2 patches not being
>> applied properly).
>
> Ok, I will investigate and made this a blocker for 3.0.3: #3388
>
> As is the gmp.spkg with the Core2 patches and all that fun stuff is a
> giant mess including the OSX fixes made by William :)
>
> Let's hope MPIR is here sooner than later ....

I just noticed that the slowness happens on amd64 as well, so  
probably Gaudry's patches are not being applied properly either.

This is on alhambra (2.6GHz opteron):

----------------------------------------------------------------------
| SAGE Version 3.0.1, Release Date: 2008-05-05                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------

sage: x = ZZ.random_element(2^10000000)
sage: y = ZZ.random_element(2^10000000)
sage: time z = x * y
CPU times: user 0.19 s, sys: 0.02 s, total: 0.21 s
Wall time: 0.21
sage: time z = x * y
CPU times: user 0.19 s, sys: 0.01 s, total: 0.20 s
Wall time: 0.20
sage: time z = x * y
CPU times: user 0.20 s, sys: 0.00 s, total: 0.20 s
Wall time: 0.20



----------------------------------------------------------------------
| SAGE Version 3.0.2, Release Date: 2008-05-24                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------

sage: x = ZZ.random_element(2^10000000)
sage: y = ZZ.random_element(2^10000000)
sage: time z = x * y
CPU times: user 0.41 s, sys: 0.00 s, total: 0.41 s
Wall time: 0.42 s
sage: time z = x * y
CPU times: user 0.41 s, sys: 0.00 s, total: 0.41 s
Wall time: 0.41 s
sage: time z = x * y
CPU times: user 0.41 s, sys: 0.00 s, total: 0.41 s
Wall time: 0.41 s



david


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