On 04/29/2010 10:00 AM, Steenhauer, Kate wrote: > 1) F90=ifort (to set F90 variable) > 2) ./configure --enable-f90modules --prefix=/opt/mpich2 F90FLAGS=-i4 Try this: ./configure --prefix=/opt/mpich2 F77=ifort F90=ifort -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji