MPE is installed by default for MPICH2. (But MPE can be configured for other MPI implementations). What version of MPICH2 are you using ? A.Chan ----- "Alberto Giannetti" <albertogiannetti at gmail.com> wrote: > Do I have to statically configure MPICH2 with logging enabled to use > > MPE functions? Why wouldn't an MPE-enabled install be the default?