<span lang="en"><span>Good afternoon.</span><br> <span>I am installing</span> <span>the</span> <span>WRF</span> <span>numerical</span> <span>model</span> <span>in</span> <span>a</span> <span>single computer</span> <span>with 2</span> <span>cores and</span> <span>2 threads</span> <span>and I see that</span> <span>there are 3</span> <span>ways to run</span><span>:</span> <span>Serial,</span> <span>OpenMP</span> <span>and</span> <span>Dmpar</span><span>.</span><br>

 <span>Mpich</span> <span>(</span><span>Dmpar</span> <span>option</span><span>) can</span> <span>be run on a</span> <span>single computer</span><span>?</span><span>.</span><br>
 <span>In other</span> <span>words,</span> <span>if I run</span> <span>the program with</span> <span>mpich</span> <span>indicating</span> <span>the two nuclei</span> <span>is faster than</span> <span>with</span> <span>openmp</span><span>?</span><br>

 <span>How many processes</span> <span>(-</span><span>np</span><span>) should</span> <span>tell</span> <span>mpich</span> <span>to be</span> <span>faster than</span> <span>openmp</span><span>?</span><br>
 <span>I'm</span> <span>running</span> <span>as follows</span><span>:</span><br><br>export CC=icc<br>export FC=ifort<br>./configure --prefix=$HOME/Mpich2<br>make<br>make install<br>
cd $HOME<br>touch .mpd.conf<br>chmod 600 .mpd.conf<br>gedit .mpdhost y escribir:<br>MPD_SECRETWORD=angelo1903<br>mpdboot -v -n 1 --ncpus=2<br>mpirun -np 2 ./run.exe</span><br clear="all"><br>-- <br>Angelo Pascualetti A.<br>
Meteorólogo<br>Direccion General Aeronautica Civil<br>Aeropuerto Cerro Moreno<br>Antofagasta<br><br>