OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Problem with MPI execution an LBM algorithm › Re: Problem with MPI execution an LBM algorithm August 24, 2012 at 9:17 am #2073 joMember Dear Patrick,rnrn1. Did you recompile the code by 1. “”make cleanbuild””, 2. “”make clean”” and 3. “”make””? Can you use mpirun instead mpiexec? Did you measure the execution times?rnrnJo