When I run an MPI job using PGI 19.04 I get this warning:
WARNING: Linux kernel CMA support was requested via the btl_vader_single_copy_mechanism MCA variable, but CMA support is not available due to restrictive ptrace settings. The vader shared memory BTL will fall back on another single-copy mechanism if one is available. This may result in lower performance.
Does this cause lower performance as the warning says? Is there a way to fix this?
I am running Linux Mint 19.1 with Ubuntu 18.04 underneath and the 4.15.0-50-generic kernel.