[Ipopt] Unpredictable results with mac OS X Lion vecLib

Ray Zimmerman rz10 at cornell.edu
Tue Mar 13 08:50:12 EDT 2012

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

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