Re: [Beowulf] Quick question... on Fortran

2007-05-11 Thread Martin Wheeler
On Sat, 14 Apr 2007, Brian Dobbins wrote: ^^^ > >From one Fortran averse person to another: Brian, your date setting appears to be a month behind everyone else. Cheers, -- Martin Wheeler - 00 44 1458 83-1103Glastonbury - BA6 9PH - England (First introduced to FORTRAN by

Re: [Beowulf] Quick question... on Fortran

2007-05-11 Thread Mark Hahn
The gross 32-bit layout, from bottom to top is: program & data, shared libs & mmap, heap, and stack; with the space between the code/data and shared libs controlled by brk(2). let me offer a brief program and a few more details (not in disagreement): #include #include char static_variable; i

Re: [Beowulf] Quick question... on Fortran

2007-05-11 Thread Lombard, David N
On Thu, May 10, 2007 at 12:01:34PM -0400, Robert G. Brown wrote: > I am (as you may well know) extremely fortran averse. However, a > researcher in our department has recently asked what the current limits > are on the size of an array in modern fortran(s) under linux. I suppose > he'd like an an

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Greg Lindahl
On Thu, May 10, 2007 at 05:57:55PM -0400, Robert G. Brown wrote: > >I don't see much point in having both languages in the same source > >file. > > Me neither, actually. Although there might be some point in developing > a new language that smoothly merges the desireable features of both. Yes,

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Tom Elken
From: "Brian Dobbins" <[EMAIL PROTECTED]> Subject: Re: [Beowulf] Quick question... on Fortran To: "Robert G. Brown" <[EMAIL PROTECTED]> > Using the PGI compilers ... > The way to do this is to use the 'mcmodel=medium' option and to promote > int

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Robert G. Brown
On Thu, 10 May 2007, Greg Lindahl wrote: On Thu, May 10, 2007 at 04:37:58PM -0400, Robert G. Brown wrote: Who knows, in ten years we may see a merge of fortran and c into a "supercompiler" that permits near transparent switching of syntax, or inlining of fortran in c the way assembler can be i

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Greg Lindahl
On Thu, May 10, 2007 at 04:37:58PM -0400, Robert G. Brown wrote: > Who knows, in ten years we may see a merge of fortran and c into a > "supercompiler" that permits near transparent switching of syntax, or > inlining of fortran in c the way assembler can be inlined now. Existing compilers do inli

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Robert G. Brown
On Thu, 10 May 2007, Toon Moene wrote: Robert G. Brown wrote: I am (as you may well know) extremely fortran averse. However, a researcher in our department has recently asked what the current limits are on the size of an array in modern fortran(s) under linux. I suppose he'd like an answer f

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Robert G. Brown
On Sat, 14 Apr 2007, Brian Dobbins wrote: From one Fortran averse person to another: Using the PGI compilers (at least as of 6.0, but 7.0 is out now and does the same), you can allocate at -least- up to 32GB in an array with Fortran on 64-bit systems. I say at least because I don't currently

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread Brian Dobbins
>From one Fortran averse person to another: Using the PGI compilers (at least as of 6.0, but 7.0 is out now and does the same), you can allocate at -least- up to 32GB in an array with Fortran on 64-bit systems. I say at least because I don't currently have more than 32GB on any of my nodes. :)

Re: [Beowulf] Quick question... on Fortran

2007-05-10 Thread laytonjb
> I am (as you may well know) extremely fortran averse. and Hell freezes over... Georg Bush gets an IQ above 100... Hilary Clinton suddenly becomes nice... Pamela Anderson starts dating a non-rock star... Too many things happening too quickly. Ahh! ___

[Beowulf] Quick question... on Fortran

2007-05-10 Thread Robert G. Brown
I am (as you may well know) extremely fortran averse. However, a researcher in our department has recently asked what the current limits are on the size of an array in modern fortran(s) under linux. I suppose he'd like an answer for both 32 and 64 bit systems. From what I have been able to goog