[Symphony] Symphony with floats

[Schulz, Bryan]

We did a search and replace on doubles and changed all references to single precision (changing max and min values as well).  The changes work well for small problems, but we begin to see access violations as the problem size increases (such as for a row count of 119 and a column count of 849).  The error reported is:

'An unhandled exception of type 'System.AccessViolationException' occurred in SymphonyTester.exe
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.'  

Any ideas where the faults could be coming?

Thanks,
Bryan


-----Original Message-----
From: Ashutosh Mahajan [mailto:asm4 at Lehigh.EDU] 
Sent: Friday, March 26, 2010 3:52 PM
To: Schulz, Bryan
Cc: symphony at list.coin-or.org
Subject: Re: [Symphony] Symphony with floats

I don't think it will be easy to make symphony work with floats. Even if we
compile symphony with floats, the other packages that it depends on (CLP, CGL,
Osi ...) may not work with floats. 

--
regards
Ashutosh Mahajan
http://coral.ie.lehigh.edu/~asm4

On Fri, Mar 26, 2010 at 12:35:58PM -0700, Schulz, Bryan wrote:
>    Is there a version of symphony that uses floats instead of doubles.  I am
>    working on an embedded application where doubles would impose unnecessary
>    cycles.
> 
> 
> 
>    Thanks,
> 
>    Bryan
> 
> 
> 
>    Bryan Schulz
> 
>    Algorithm Engineer
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>    Logos Technologies, Inc.
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