Aleksandar Donev writes:
> I would appreciate any info about Fortran 95 on G5 platforms. As far as I
> know, Absoft, NAG and now IBM (still beta) support this chip on OS X.
> Experiences as well as any information on web-pages to look at for info
> (pricing, requirements, etc.) would be helpful.
Experiences in (very) brief. I've used both the NAG and IBM (beta)
compilers. Both seem like solid products to me. My codes ported
from other platforms worked in both compilers with no problems at all.
Of course, my codes are written with portability in mind, but there
have been compilers that have enough bugs that porting the codes
was difficult (several early f90 compiler versions, plus the current
version of pgf). My experience relates just to the compilers
working correctly - I don't tend to care about extensions that I
don't use, but I recognize that there are existing applications
extensively use extensions, making them an important issue for
some people.
I'm not sure pricing on the IBM compiler is even yet available; if it
is, I don't know where without searching around myself. NAG is sort
of annoying about not publically posting prices - you have to
contact them. In both cases, be sure to mention that you qualify for
educational pricing (assuming that you do, which I'd guess to be the
case). I know that NAG has educational pricing, and I strongly
suspect that IBM does also.
I don't have performance numbers. In fact, my testing was on a G4
(even though the IBM beta didn't claim to support G4), so any
performance data I cited would be questionable anyway. I was more
interested in checking functionality. I did quick performance checks
using some of my own code, but I don't consider the results citable
(not even sure I recorded the actual numbers). Subjectively,
performance was acceptable and within expected bounds. If
price/performance was my only criterion, I wouldn't have had a G4
laptop in the first place.
I've no personal experience, either positive or negative, with the
Absoft compiler.
--
Richard Maine | Good judgment comes from experience;
[log in to unmask] | experience comes from bad judgment.
| -- Mark Twain
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