Apple G5 for Fortran jobs? - Powerpc

This is a discussion on Apple G5 for Fortran jobs? - Powerpc ; In the advertisement that one can find in Time magazine and many others, There is an impressive SPECFP2000rate result on a single CPU on a dual machine. (Why not two CPUS's together?) However, it seems that the result was never ...

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  1. Apple G5 for Fortran jobs?

    In the advertisement that one can find in Time magazine and many others,
    There is an impressive SPECFP2000rate result on a single CPU on a dual
    machine. (Why not two CPUS's together?)

    However, it seems that the result was never submitted to SPEC.org.
    I cannot find any row in SPEC.org's list. Also, the veritest link which
    www.apple.com/powermac provides is a not a kind direct link, either.

    Admittedly, my impression on Mac has been very negative. It has been
    like: their ad says one thing, the reality says another. What is the
    current situation?

    Seriously, has it become making sense to run FORTRAN jobs on Apple G5
    by now?
    Is it possible to run Linux on it to run FORTRAN jobs? I would not care
    about Linux if their current OS-X is truly Unix-like.

    Thanks.

    Hugh


  2. Re: Apple G5 for Fortran jobs?

    On Fri, 08 Aug 2003 09:47:08 -0700,
    G. Hugh Song , in
    <3f33a9d6$0$3931$b45e6eb0@senator-bedfellow.mit.edu> wrote:

    +> Is it possible to run Linux on it to run FORTRAN jobs? I would not care
    +> about Linux if their current OS-X is truly Unix-like.

    Last time I looked, FreeBSD was unix-like. And Apple conveniently
    provides the gcc suite of compilers.

    James
    --
    Consulting Minister for Consultants, DNRC
    I can please only one person per day. Today is not your day. Tomorrow
    isn't looking good, either.
    I am BOFH. Resistance is futile. Your network will be assimilated.

  3. Re: Apple G5 for Fortran jobs?

    On Fri, 8 Aug 2003 19:13:46 +0000 (UTC),
    Dave Seaman , in
    wrote:

    +> Apple's gcc suite does not currently include g77

    WHAT? SON OF A #$&#*$#&$#

    +> but you can install it yourself from fink.sf.net.

    Ah, fink to the rescue. Can that use of the Altivec instruction set?
    the web site doesn't say, but I'm thinking it might.

    http://fink.sourceforge.net/pdb/package.php/g77

    I have to download fink so I can put it on my Mom's iMac. She won't
    know (or care) g77 from /dev/null, but I will...

    James - long-time f77 hacker
    --
    Consulting Minister for Consultants, DNRC
    I can please only one person per day. Today is not your day. Tomorrow
    isn't looking good, either.
    I am BOFH. Resistance is futile. Your network will be assimilated.

  4. Re: Apple G5 for Fortran jobs?

    In comp.lang.fortran G. Hugh Song wrote:
    : In the advertisement that one can find in Time magazine and many others,
    : There is an impressive SPECFP2000rate result on a single CPU on a dual
    : machine. (Why not two CPUS's together?)

    I wouldn't call the Apple results impressive, except relative to
    previous Macs, which had results so bad that they were never publicly
    released by Apple.

    Nonetheless, the results are good enough that you could use a Mac and
    be very happy, especially if you like other aspects of the
    machine. Neither Mac Fortran vendor (NAG or Absoft) has released a
    G5-optimized compiler yet, although NAG has a press release saying
    they will do so in the future.

    Running Linux will on the Mac will have the advantage of giving you a
    true 64-bit OS (unlike Mac OS 10.2.7 & 10.3), but it is not clear
    whether there is a commercial Fortran compiler for 64-bit PowerPC for
    Linux on machines not made by IBM. IBM has its own compiler for 64-bit
    Linux, but presumably it is not supported on Macs.

    If you want my opinion, for pure speed (with some attention to cost),
    for 1 CPU the 3.2mhz 800FSB Pentium 4 using Windows or Linux with the
    Intel compilers is the way to go. For 2 or 4 CPUs, the 64-bit Opteron
    architecture running gcc 3.3 and PGI 5.0 Fortran 5.0 is the way to go.

    --
    ------------------------
    Jeremy T. Fox
    jerfox@stanford.edu

  5. Re: Apple G5 for Fortran jobs?

    Dave Seaman wrote:

    > On 8 Aug 2003 19:47:23 GMT, I R A Darth Aggie wrote:
    >
    >>On Fri, 8 Aug 2003 19:13:46 +0000 (UTC),
    >>Dave Seaman , in
    >> wrote:

    >
    >
    >>+> Apple's gcc suite does not currently include g77

    >
    >
    >>WHAT? SON OF A #$&#*$#&$#

    >
    >
    >>+> but you can install it yourself from fink.sf.net.

    >
    >
    >>Ah, fink to the rescue. Can that use of the Altivec instruction set?
    >>the web site doesn't say, but I'm thinking it might.

    >
    >
    > The compiler accepts -maltivec, which I found out by using "g77
    > --target-help" to list target-specific options. However, when I tried it
    > on the single-precision whetstone benchmark, I didn't find that it made a
    > noticeable difference.
    >
    >


    If g77 is anything like gcc et al then enabling AltiVec doesn't actually
    cause AltiVec-optimised code to be automatically generated, it just
    enables the use of AltiVec extensions in your code (AltiVec data types
    and primitives - see the AltiVec PIM and PEM manuals on motorola.com for
    details).

    Paul


  6. Re: Apple G5 for Fortran jobs?


    "G. Hugh Song" wrote in message news:3f33a9d6$0$3931$b45e6eb0@senator-bedfellow.mit.edu...
    > In the advertisement that one can find in Time magazine and many others,
    > There is an impressive SPECFP2000rate result on a single CPU on a dual
    > machine. (Why not two CPUS's together?)
    >
    > However, it seems that the result was never submitted to SPEC.org.
    > I cannot find any row in SPEC.org's list. Also, the veritest link which
    > www.apple.com/powermac provides is a not a kind direct link, either.
    >
    > Admittedly, my impression on Mac has been very negative. It has been
    > like: their ad says one thing, the reality says another. What is the
    > current situation?
    >
    > Seriously, has it become making sense to run FORTRAN jobs on Apple G5
    > by now?
    > Is it possible to run Linux on it to run FORTRAN jobs? I would not care
    > about Linux if their current OS-X is truly Unix-like.
    >
    > Thanks.
    >
    > Hugh
    >


    Find the link to the g5 nasa test.

    Found it
    http://members.cox.net/craig.hunter/g5/

    http://members.cox.net/craig.hunter/...A_G4_Study.pdf

    Last year Apple were going to supply a few copies of the absoft compiler to the Physics department
    at the university I'm at , but at the last minute decided not to. Didn't get told what the reason was.
    Killed off what would have been a nice project for me to do.

    Its unix like all right.

    The under pinnings is darwin
    http://developer.apple.com/darwin/

    there is even a version you can run on a x86 pc.
    Very similar to freebsd except uses the mach kernel.

    You should have a read of
    http://www.apple.com/macosx/pdfs/Mac...X_users_TB.pdf


    Alex

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