4.4. Filesystem requirements
If you are building Open MPI on a network filesystem, the machine you on which you are building must be time-synchronized with the file server.
Specifically: Open MPI’s build system requires accurate filesystem
timestamps. If your
make output shows that it ran GNU Automake,
Autoconf, and/or Libtool, or includes warning about timestamps in the
future, perhaps looking something like this:
Warning: File `Makefile.am' has modification time 3.6e+04 s in the future
Know that this is not normal, and you likely have an invalid build.
In this case, you should remove the Open MPI source directory and start over (e.g., by re-extracting the Open MPI tarball): either switch to build on a local filesystem, or ensure that the time on your build machine is synchronized with the time on your file server before building again.