Actually 4GB is fine for 32 bit Linux:
 http://www.linux.com/feature/119287
(You can actually go up to 64G with the proper kernel config, although beyond 4G I would switch to a 64 bit OS)

My understanding is that 32 bit coot runs on 64 bit systems with the appropriate compatibility libraries.


Graeme Winter wrote:
Kevin,

Ouch, didn't know about that! Slightly worrying as I am about to take
delivery of a new machine with 4GB of ram, and hence will *need* a 64
bit OS :o(

Will a 32 bit compiled coot work on this system?

Here's hoping,

Graeme

2008/11/18 Kevin Cowtan <[EMAIL PROTECTED]>:
And I would give exactly the opposite advice, unless you are or have a guru
who can devote time to fixing all the little things which still don't work
under 64 bit OSs.

(Does anyone else have any clues on why 64-bit compiled coot can't calculate
a map? I need to look into it, but have a huge backlog of work at the
moment.)

Kay Diederichs wrote:
Dear Anna,

you didn't ask about that, but I would definitely recommend a 64bit
operating system.

My specific recommendations are mostly in the articles "Computer_hardware"
and "CentOS", to be found under the more general topic "Xtal_computing" of
the CCP4 wiki
(<http://strucbio.biologie.uni-konstanz.de/ccp4wiki/index.php/Xtal_computing>)

HTH,

Kay

Anna S Gardberg schrieb:
Dear list,
I haven't seen the "crystallographic computing platform" thread come up
for a while, and I've got a chance to upgrade my desktop to a workstation,
so I thought I'd ask the CCP4BB for advice on:

1. Mac vs. Linux (which flavor?) vs. Windows
2. Graphics cards
3. Displays
4. Processors - multiple processors, multiple cores? Speed?

About half of what I do involves ~1.0 A X-ray structures - data
processing, rebuilding in Coot, refinement, and so forth - so my current
desktop (Optiplex GX745, Radeon X1300) machine drags on graphics sometimes.
I don't seem to need stereo these days, for what it's worth.

Anybody have suggestions or specs they'd like to share? Thanks in
anticipation of your advice.

Regards,
Anna Gardberg



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