README.envvar says you still support it but it appears nowhere in the source code. Are you parsing it via some special magic or are the docs out of sync with the implementation? I ask this now because I saw what appears to be a bug in the implementation, but it's stupid to track down that bug if the problem is that MPICH_ASYNC_PROGRESS is not supposed to work anymore. Thanks, Jeff jrhammon-mac01:git jrhammon$ git grep ASYNC_PROGRESS src/mpi/init/init.c: - name : MPIR_CVAR_ASYNC_PROGRESS src/mpi/init/init.c: if (MPIR_CVAR_ASYNC_PROGRESS) src/mpi/init/init.c: if (MPIR_CVAR_ASYNC_PROGRESS) { src/mpi/init/initthread.c: if (MPIR_CVAR_ASYNC_PROGRESS) src/mpi/init/initthread.c: if (MPIR_CVAR_ASYNC_PROGRESS) { (pamid stuff) -- Jeff Hammond [email protected] http://jeffhammond.github.io/