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From:	Mark Hadfield <m DOT hadfield AT niwa DOT co DOT nz>
Subject:	Re: G77 160 MB memory allocation limit
Date:	Thu, 28 Apr 2005 07:51:26 +1200
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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 DOT hadfield AT niwa DOT co DOT nz
National Institute for Water and Atmospheric Research (NIWA)


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