Checking with my local install, which uses a packaged version of metis, it fails. But another install of pyfr with the current develop and a compiled version of metis works fine. Can you try compiling metis? They introduced a bug in the build a few versions ago, and it clearly still isn’t resolved. See this topic: Error: No partitioners available, Metis, undefined symbol: gk_jbufs - #4 by WillT