COMP:Make sure MPICH_IGNORE_CXX_SEEK is defined if VTM_USE_MPI is on (pulled in from hdf if parallel io on)
COMP:Make sure MPICH_IGNORE_CXX_SEEK is defined if VTM_USE_MPI is on (pulled in from hdf if parallel io on)

cjh1/Xdmf2,cjh1/Xdmf2,cjh1/Xdmf2