MPI and RMPISNOW alterations for R 4.1.1

IN: 04932896

1. In the modulefile for r/4.1.1-openblas/gnu-10.2.0, this line needs to be changed:

setenv           OMPI_MCA_btl tcp,sm,self 

to

setenv           OMPI_MCA_btl tcp,vader,self 

(No sm for OpenMPI 4). This may be able to be dropped entirely, because the mpirun wrapper for OpenMPI ought to be setting this correctly already.
This was a problem on Myriad, MPI within single node.

2. Check if RMPISNOW is giving this error for a user with no existing R profile and fix:

GERun: GErun command being run:
GERun:  mpirun RMPISNOW
Loading required package: utils
Error: cannot add binding of '.MPIrun' to the base environment
Execution halted

and see https://stackoverflow.com/questions/68198277/error-cannot-add-binding-of-first-to-the-base-environment for reason and fix syntax.
This was reported on Kathleen, 2-node job. Was fixed by copying RMPISNOW and RMPISNOW_profile to user's home dir and modifying based on that link.

https://cran.r-project.org/doc/manuals/r-devel/NEWS.html
R 4.1.0 had

The base environment and its namespace are now locked (so one can no longer add bindings to these or remove from these).