When you attempt to run the UniPHY simulation example design in ModelSim or Riviera-PRO, you may receive the following error:
Error: (vsim-125) The shared library ./submodules/libbytestream_pli.so being
loaded was built on a 32-bit machine. A 32-bit shared library cannot
be loaded in a 64-bit simulation. Please use compatible machines
to build and load the library
This issue affects DDR2 and DDR3 protocols, and QDR II/II+ and RLDRAM II when using the Nios II-based sequencer.