Hello Tim, I believe the notion comes about as one can thread 64 instead of 32 addresses concurrently, thereby boosting performance. If it has no performance boost, why would they bother?
Cheers, tom -----Original Message----- From: Tim Gruene [mailto:t...@shelx.uni-ac.gwdg.de] Sent: Wednesday, 4 April 2012 6:43 PM To: Peat, Tom (CMSE, Parkville) Cc: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] Who is using 64-bit Linux? -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear Tom, 64-bit is about memory addressing - why would you expect a performance boost? I have wondered where this notion originated from. Cheers, Tim On 04/03/12 22:07, Tom Peat wrote: > We use the 64 bit Centos (Red Hat) distro and CCP4, Coot, etc seem to work > fine on this. > I can't say I notice a big performance boost from the 64 bit side of things. > Maybe I'm just impatient. > cheers, tom > > > Tom Peat > Biophysics Group > CSIRO, CMSE > 343 Royal Parade > Parkville, VIC, 3052 > +613 9662 7304 > +614 57 539 419 > tom.p...@csiro.au > ________________________________________ > From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] On Behalf Of Roger Rowlett > [rrowl...@colgate.edu] > Sent: Wednesday, April 04, 2012 5:57 AM > To: CCP4BB@JISCMAIL.AC.UK > Subject: [ccp4bb] Who is using 64-bit Linux? > > The time has come for me to upgrade my Linux OS to something more recent > for me and my student workstations. A 32-bit distro is certainly > conservative and compatible with CCP4 and Coot, but it seems like that > solution hobbles my hardware and puts some limitations on available > memory, even with PAE enabled. So who is using a 64-bit distro these > days, and are there lingering issues of compatibility and dependency > hell with commonly used XRD software, like CCP4, Coot, iMOSFLM etc.? > > Ubuntu 12.04 LTS (beta) actually works OK with one simple workaround for > the global menu for CCP4 and Coot, and wine compatibility is fine for > running CrysalisPro in the same environment, so it's really comes down > to whether or not the extra performance of a 64-bit OS is worth the pain > of compatibility issues for XRD software. Any thoughts? > > Cheers, > > _______________________________________ > Roger S. Rowlett > Gordon & Dorothy Kline Professor > Department of Chemistry > Colgate University > 13 Oak Drive > Hamilton, NY 13346 > > tel: (315)-228-7245 > ofc: (315)-228-7395 > fax: (315)-228-7935 > email: rrowl...@colgate.edu > - -- - -- Dr Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen GPG Key ID = A46BEE1A -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFPfAmoUxlJ7aRr7hoRArGeAKDgsoIKEADDo6ycaJBpLf6W9tnCFACeOSM6 1gZUOKKWkQ6Ioo+pQkPtw4Y= =DdSc -----END PGP SIGNATURE-----
