Re: [Gretl-users] Issue with openBLAS, openMPI and pthreads

Ok, I've figured out where the MPI library is located. Now I run the following command for compiling stuff in Ubuntu 17.04 by: <terminal> ./configure --enable-build-doc -with-mpi-lib=/usr/lib/x86_64-linux-gnu/openmpi/lib </terminal> and the output correctly shows that MPI is supported now. The bootstrap MPI example also works fine. Best, Artur Am 03.06.2017 um 17:32 schrieb Artur Tarassow: > Dear all, > > just by chance, I've found the following gretl warning: > > <gretlcli> > > *** Warning *** > * > * gretl is built using OpenMP, but is linked against > * OpenBLAS parallelized via pthreads. This combination > * of threading mechanisms is not recommended. Ideally, > * OpenBLAS should also use OpenMP. > > </gretlcli> > > I am not sure how to respond to this correctly. > > Usually I compile gretl on ubunty by running > > <terminal> > ./configure --enable-build-doc --enable-openmpi > </terminal) > > and get the output > > <configure> > > Installation path: /usr/local > Use readline library: yes > Use gnuplot for graphs: yes > Use pdflatex for typesetting: yes > Use libgsf for zip/unzip: no > sse2 support for RNG: yes > OpenMP support: yes > MPI support: no > AVX support for arithmetic: yes > Build with GTK version: 2.0 > Build gretl documentation: yes > Use Lucida fonts: no > Build message catalogs: yes > Build gretl addons: no > X-12-ARIMA support: yes > TRAMO/SEATS support: yes > libR support: yes > ODBC support: no > JSON parsing support: yes > Experimental audio support: no > Use xdg-utils in installation: if DESTDIR not set > > LAPACK libraries: > -llapack -lblas -lgfortran > > </configure> > > The package libopenmpi-dev is installed. > > $sysinfo yields > > <sysinfo> > > bundle anonymous: > nproc = 4 > blascore = Haswell > hostname = atdesktop > os = linux > mpi = 0 > blas = openblas > omp_num_threads = 4 > omp = 1 > blas_parallel = pthreads > mpimax = 0 > wordlen = 64 > > </sysinfo> > > > Any thoughts? Thanks > > Artur