> mca param file treats any key=val as mca parameter only.
> In order to add parser support for something that is not mca param, will require change file syntax and it will look bad, i.e.:
> mca btl = sm,self,openib
> env DISPLAY = console:0
> I think the current implementation is less intrusive and re-uses existing infra in the most elegant way.
> The param file syntax change is too big effort to justify this feature (IMHO) which can be provided with existing infra w/o breaking anything.
IMHO this is a useful parameter option to have. If we may consolidate these two parameters (-x and the new one) into
single one, it might be even more helpful.