Mail Archives: cygwin/2006/02/16/14:50:14
Dill, Jens (END-CHI) wrote:
> Dave Korn writes:
>
>>>Unfortunately for me, (e) is impractical. It's not clear whether
>>>it is my source code or CygWin's that I need to fix,
>>
>> Have you actually *tried* this application of yours under Cygwin and
>>discovered that it indeed *is* one of the rare ones that actually runs
>
> into
>
>>this problem, or are you getting your knickers in a twist over some
>
> entirely
>
>>theoretical issue that may just as likely never happen?
>>
>>
>>>My project time frame doesn't allow for that. If I read Dave Korn's
>>>posting correctly (along with the others who talk about adjusting the
>>>sizes of Fortran arrays to fix the problem)
>>
>> *Why* are you relying on information that is 12 to 18 months out of date?
>>There's been quite a few check-ins to the cygwin cvs in that period, and
>
> in
>
>>case you haven't noticed, we haven't had anyone here running into that
>
> problem
>
>>recently, and some of the fortran people said that one of the fixes
>
> Corinna
>
>>made _ages_ ago now had solved the problem in their experience, so perhaps
>
> you
>
>>should stop hoping to divine the truth from a priori first principles and
>>outdated mailing-list-posts, and get a bit _empirical_ about it?
>
>
> Of course I have *tried* the application under CygWin and it does
> indeed actually run into the problem. Of course I have searched
> the list for more recent information about the problem. Of course
> I am using a new installation of the latest stable CygWin and
> a machine with sufficient memory and horsepower.
>
> Not every new poster to the list is a newbie to posting.
>
> I have done some experimentation. The "maxmem" program
> outlined in http://cygwin.com/cygwin-ug-net/setup-maxmem.html
> shows me that I have 1.5 Gb of memory available to allocate.
>
> I can run tests in which I allocate static arrays of increasingly
> large size, and I hit the cygheap base problem *exactly* when I
> try to make an array bigger than 1.5 Gb.
>
> I can run tests in which I set the --heap option for the linker
> to increasingly large sizes, and I hit the cygheap base problem
> *exactly* when I try to make the heap size larger than 1.5 Gb.
>
> I can run tests in which I set the --stack option for the linker
> to increasingly large sizes, and I get a "thread handle not set"
> error during execution the minute my stack size exceeds 0.5 Gb.
> Yes, that's 0.5. I never go to the full 1.5 Gb.
>
> I did not tinker with --stack or --heap when building my
> executable. I am positive it has no static arrays larger than
> a few tens of thousands of bytes. Certainly nowhere near 1.5 Gb.
> The size of the .exe file itself is just over 80 Mb.
>
> So what is causing the problem?
>
> -- Jens Dill
> Endeavor Information Systems
>
>
You know, it wouldn't exactly be rocket science to try 1.5.19-4 ...
Dave mentioned that there have been many improvements in the last year
on this issue - 1.5.18-1 is rather dated now.
It can't hurt to try now, can it?
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