[Ipopt] Multiple Cores

[Mostafa.B]

Hi,

I just tried what you said in Windows 8 64 bit, MingW64 as below:

../configure ADD_FFLAGS=-fopenmp \
  --with-blas=”-L/C/Intel/COMPOS~1/mkl/lib/intel64 \
  -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core \
  -Wl,--rpath,/C/Intel/COMPOS~1/mkl/lib/intel64” \
  --with-lapack=”-L/C/Intel/COMPOS~1/mkl/lib/intel64 \
  -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core \
  -Wl,--rpath,/C/Intel/COMPOS~1/mkl/lib/intel64”

but I get configuration error: BLAS doesn't work

-Mosy


On Mon, May 13, 2013 at 10:28 AM, Tony Kelman <kelman at berkeley.edu> wrote:

>   Quick correction. In my last email when I said “Here’s how I most
> recently configured Ipopt to use sequential MKL,” that was actually what I
> used for mulithreaded MKL, sorry.
>
> And regarding use with MA86 or MA97, be sure you compile them with OpenMP
> support (hence the FFLAGS=-fopenmp, assuming gfortran compiler). You
> control the number of threads used by an OpenMP solver (MA86, MA97, and
> Pardiso) by setting the environment variable OMP_NUM_THREADS.
>
>  If you’re using the bash shell, you set an environment variable as
> follows (example for 4 threads):
>  export OMP_NUM_THREADS=4
>
>  With C shell, the corresponding command is:
>  setenv OMP_NUM_THREADS 4
>
>  When you use both multithreaded MKL and a multithreaded linear solver,
> you should control the number of threads used by MKL specifically with the
> MKL_NUM_THREADS environment variable, otherwise it will use the
> OMP_NUM_THREADS setting (which may not be what you want, if you’ve got a
> parallel linear solver calling parallel BLAS).
>
>  WSMP uses pthreads rather than OpenMP, so you control the number of
> threads used with that solver by an Ipopt option wsmp_num_threads instead
> of an environment variable.
>
>  One thing I’ve noticed when running Ipopt with a parallel linear solver
> is the “Total CPU secs in IPOPT” will be higher than the wall time
> (multiple CPU’s are being used, so I guess it means what it says). With
> print_timing_statistics set to yes you will get the CPU time, system time,
> and wall time all broken down.
>
>  -Tony
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.coin-or.org/pipermail/ipopt/attachments/20130517/f623d088/attachment.html>