[Ipopt] Rép : Unpredictable results with mac OS X Lion vecLib

[Ray Zimmerman]

I can confirm that the patch appears to work for me ... that is, tests that were failing before in Matlab on Lion with Ipopt built with vecLib are now passing consistently with this patch.

And, yes, please submit a ticket with this patch [1] to get this fixed in the official distribution.

Thanks,

-- 
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645

[1] Go to http://projects.coin-or.org/Ipopt/newticket (must be logged in first).


On Mar 13, 2012, at 9:23 AM, Sylvain Auliac wrote:

> We have written a patch to correct the IpBlas.cpp file, it seems to work now with Lion's vecLib. I can send it to whoever wants it.
> 
> 
> Le 13 mars 2012 à 13:50, Ray Zimmerman a écrit :
> 
>> I mentioned that Ipopt does not work with vecLib on Lion at https://projects.coin-or.org/Ipopt/wiki/Ipopt_on_Mac_OS_X. My solution was to use Goto BLAS, which performed almost as well in my tests on Snow Leopard.
>> 
>> -- 
>> Ray Zimmerman
>> Senior Research Associate
>> 419A Warren Hall, Cornell University, Ithaca, NY 14853
>> phone: (607) 255-9645
>> 
>> 
>> 
>> 
>> On Mar 12, 2012, at 9:01 AM, Sylvain Auliac wrote:
>> 
>>> Hi,
>>> Professor Hecht and I encountered a strange (and bad) behaviour of ipopt while trying to give it an interface in the FEM solver freefem++ developed in our laboratory. These were mainly memory issues. Mr Hecht later found that it was due to some incompatibilities in the file : Ipopt-3.10.2/Ipopt/src/LinAlg/IpBlas.cpp. When used with mac OS X Lion's vecLib BLAS, some of the functions are passed values which lead to unpredictable results (as said in the following page :  http://www.mathkeisan.com/usersguide/man/dcopy.html).
>>> I don't know if someone already reported this, but having found nothing about that while doing a quick search, I thought it would be a good thing to do it. 
>>> Best regards.
>>> 
>>> 
>>> Sylvain Auliac
>>> Laboratoire Jacques-Louis Lions
>>> Université Pierre et Marie Curie
>>> mail: auliac at ann.jussieu.fr
>>> tel : 01 44 27 71 70
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> Ipopt mailing list
>>> Ipopt at list.coin-or.org
>>> http://list.coin-or.org/mailman/listinfo/ipopt
>> 
> 
> Sylvain Auliac
> Laboratoire Jacques-Louis Lions
> Université Pierre et Marie Curie
> mail: auliac at ann.jussieu.fr
> tel : 01 44 27 71 70
> 
> 
> 
> _______________________________________________
> Ipopt mailing list
> Ipopt at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/ipopt

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