[ofiwg] input on intra-node implementation

[Hefty, Sean]

> XPMEM appears to be the most powerful option, but since CMA is standard
> now, I think that's the better option to pursue.

Thanks - this is exactly the information that I'm looking for.

> I think respecting security concerns is essential to mainstream adoption.
> And in HPC, security isn't just about protecting from malicious actors,
> but bad programmers.

CMA requires ptrace capability.  Is that enough of a security concern?

I like the CMA option myself, as it seems like it would lend itself to a very simple implementation.