Re: G77 160 MB memory allocation limit

[Mark Hadfield <m dot hadfield at niwa dot co dot nz>]

Dave Korn wrote:
> > From: Impagnatiello Fabrizio
> > Sent: 27 April 2005 16:20
> > Starting from 1.5.13 (14 and 15 subversions are the same) I experienced
> > all FOTRAN written programs using large arrays to crash. 
> >
> > No error message, just exit.
> >
> > After investigation (WEB/mailing list) and testing programs I discovered
> > and verified that a new near 160 MByte allocation limit is induced by
> > cygwin1.dll  
> >
> > Simple programs compiled with -mno-cygwin flag may allocate up to 1920
> > MByte. 
> >
> > With the old 1.5.12 the usable size (2BG RAM machine) was 1536 MByte.
> >
> > Why ???
>
>   Nobody knows.  Something changed.  Perhaps in cygwin.  Then again, have
> you also installed XP SP2 in the period since 1.5.12?  That caused massive
> disturbances to process memory map space because M$ rebased all the dlls in
> the whole world.

I don't think XP SP2 is relevant, as I have this problem on Windows 2000.

It's interesting to have this pinned down to the transition from 1.5.12 
to 1.5.13. I have half a mind (but only half) to try and verify this.

--
Mark Hadfield            "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)


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