HSPICE interface with cadence artist

We are designing a high speed high precision analog-to-digitial
converter,When use spectre simulator to run simulation,it always takes
more then ten of hours but to show nothing result,when use ultrasim,the
precision is poor,so one tell me that i can use HSPICE to test,but in
PDK files,i only see hspiceS view and do not have hspiceD or hspice
view,the model files for hspice simulator is juse like that for
spectre.Now the most of our work was done and all the schematic was
drawn use sybol view,what should i do to use hspice for compare the
speed between spectre,ultrasim and hspice?