Edward A. Berry wrote:
Kay Diederichs wrote:the CPU (AMD versus Intel) does not play any role for crystallographic computing, but you'll have to decide whether you want to install the 64bit or the 32bit version of RHEL4. 32bit programs run a bit faster on a 64bit operating system, and with a 64bit OS you can run programs which require arrays of more than 3.5 GB (seldomly needed in xtallography), but you will have to install in parallel many 32- and 64bit libraries. This is no problem by itself, but quite confusing at first ...So I recommend the 32bit version.Any reccommendation for compilers ( c and fortran)? Probably a dumb question, but is there any advantage in using the 64-bit-aware intel compilers on an AMD processor? Ed
Ed, the Intel compilers work well and give good speed on AMD processors (32 or 64 bit).Apart from the Gnu compilers, there is one alternative: Sun gives out its Sun Studio compilers (version 11 at http://developers.sun.com/sunstudio/downloads/index.jsp, version 12 beta at http://developers.sun.com/sunstudio/downloads/express.jsp) for free - those work (also) under Linux and are more optimized towards AMD processors than the Intel compilers (understandably). I tested them with CNS and other programs and found that, for AMD processors, they produce slightly faster code than the Intel compilers. Furthermore they come with an IDE, and a bunch of analysis and checking tools. Concerning OpenMP (which I'm particularly interested in), they appear to be as good as the Intel compilers.
HTH, Kay -- Kay Diederichs http://strucbio.biologie.uni-konstanz.de email: [EMAIL PROTECTED] Tel +49 7531 88 4049 Fax 3183 Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz
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