Serge,
this might indeed be the problem for some, but my MacBook is of an older
vintage and only has one GPU.
Andreas
On 15/02/2010 10:10, Serge Cohen wrote:
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For what it is worth (I'm fairly confident that indeed this is not the cause of
the problem you are seeing, but better checking than missing the point):
The current MacBook Pro also have two GPU, one integrated in the chipset and a
more powerful dedicated one.
By default only the chipset integrated one is on (to save on power consumption), so if you're doing graphics it is worth
going in "system preference" -> "energy saver" and at the top preference window check that
"Graphics" is set to "Higher performance"...
A bummer is that it is currently necessary to restart one's session to go from
one setting to the other, and I'm not 100% sure that this setting is preserved
upon reboot of the machine...
Cheers,
Serge.
Le 15 févr. 2010 à 10:44, Andreas Förster a écrit :
Hey Rui,
for what it's worth, I had a very similar problem. I upgraded a MacBook
Pro to OSX SP6 and got extra-slow graphics and a wildly flickering PyMOL
window - only on the laptop screen, though. On the external screen,
PyMOL looked ok. Ray-tracing was painfully slow in either window.
When I cloned the screen instead of extending it, the flicker
disappeared and didn't return when I went back to the original setup of
two contiguous screens. All is good now.
While this is by no means an answer to your question or useful advice,
it means at the very least that you might be able to overcome your
problems by fiddling around.
Good luck.
Andreas
On 13/02/2010 5:10, rui wrote:
HI,Dear All,
sorry for this non-crystallgraphic question, but I think people here may
know how to fix this problem. Several days ago, I posted a question
about slow coot in my mac and people suggested me change some settings
in coot which does help. However, I still feel something is wrong. I
noticed the slow speed when I installed x11,( I switched from ppc to
macpro and need to reinstall x11 and coot etc ). Since then, I noticed
that when I open a terminal , it's very slow and if I type glxgears, it
only shows about 1400 FPS. If I open pymol, I can actually see the
images are flashing. Does anyone know why? Thanks a bunch.
Rui
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--
Andreas Förster, Research Associate
Paul Freemont & Xiaodong Zhang Labs
Department of Biochemistry, Imperial College London
http://www.msf.bio.ic.ac.uk
