We had been having some problems simulating a very simple circuit on our linux and sun workstations. The problem was that we were getting errors on the sun, but not on the linux workstation. It was found that the linux systems had the MMSIM package from Cadence installed, while the suns had not. So, the suns were using the version of spectre that came with the IC package, while the linux workstations were using the version from MMSIM. The solution was to install the MMSIM package on the suns and to make sure that the path to the MMSIM files came before the path to the IC files in /etc/.cshrc.
# Make sure MMSIM comes before ICHOME in PATH, so we get correct spectre program
setenv MMSIMHOME /net/sw/sun/cad/mmsim
setenv PATH ${PATH}:${MMSIMHOME}/tools/bin:${MMSIMHOME}/tools/dfII/etc
setenv ICHOME /net/sw/sun/cad/ic/ic5141USR5
setenv PATH ${PATH}:${ICHOME}/tools/dfII/bin:${ICHOME}/tools/bin:${ICHOME}/tools/plot/bin
setenv IUSHOME /net/sw/sun/cad/ius
setenv PATH ${PATH}:${IUSHOME}/tools/bin