Thanks so much. XDS program is a very good example for multi-core cpu processing. I love it. I also have a macbook. Though a notebook, it often runs CCP4 program more quickly than on desktop computer. The programs, for example refmac5, seem to use multi-core on OSX and single core on linux. Is that mean CCP4 runs more efficiently on OSX than linux?
Best Chang 2013/12/17 Tim Gruene <t...@shelx.uni-ac.gwdg.de> > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Dear Chang, > > this is hardly a matter of configuration but a question of programming > (meaning you cannot change it unless you modify the source code and > recompile). You can run a program of which you know it is > parallelised, e.g. XDS, shelxl, shelxd, and check with the command > 'top' that your %CPU is about 400%. > > You can also get the program i7z for more detailed information about > the status of your CPUs. > > Phaser is parallelised, but I dare say it is rather an exception > within the ccp4 suite. > > So all you can do is encourage the developers of cpu-demanding > programs to spend time on parallelising their code - XDS is one of the > most impressive examples of how much this can be worth in the context > of acceptance and propagation. > > Best, > Tim > > On 12/17/2013 02:51 AM, Chang Qing wrote: > > Dear all > > > > I just installed CCP4 6.4 on Ubuntu 12.1. The program can work. I > > found it just used 1 processor instead of 4( Intel i5) for data > > solving. Does anyone know how to config CPU so that all processors > > can be used. > > > > Thanks > > > > Chang > > > > - -- > - -- > 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 Icedove - http://www.enigmail.net/ > > iD8DBQFSsBQ+UxlJ7aRr7hoRAk2wAJ9MauWFkWoiW34xYGJVVPpFTD1NTQCgiNdY > +h052qPU7DNQoRlZOGg75Os= > =oema > -----END PGP SIGNATURE----- >
