[Ipopt] Problems with Pardiso solver in Ipopt

[Rui Huang]

Hi Fabian

Many thanks for this.
The pardiso version I used is libpardiso_GFORTRAN42_INTEL64_P.so,
the compiler in the computer are 64-bit gcc 4.2.0, gfortran 4.2.0.

Thanks.

Rui


Fabian Wein wrote:
>> I compiled IPOPT with pardiso parallel version and tested it with a 
>> fairly large problem (100,000 variables) on Intel Quad core Linux machine.
>> It seems that the pardiso does not do the parallel computing even I 
>> specified the environmental parameter OMP_NUM_THREADS=4.
>>     
>
> Which compiler do you use?
>   
>> The cpu usage was always around 25% no mater what value the parameter 
>> OMP_NUM_THREADS was (1,2,3,4).
>>     
>
> I like to see the threads with htop
>
> Fabian
>
>   

_

-- 
Rui Huang
Chemical Engineering Department
Carnegie Mellon University
5000 Forbes Ave Pittsburgh PA 15213
www.andrew.cmu.edu/~ruih