[lug] Processor assignment

[Davide Del Vento]

Hi,

> Solved the problem: mpiexec --bind-to none
Cool.

> Would you be able to connect me with one of your sysadmins?
I can but they tend to be very busy, not sure they would respond to
"curiosity" kind of questions. Anyway, that's the list of them:
http://staff.ucar.edu/orgs/scsg (let me know if you'd like to be
introduced, and to whom)

> I'm curious if
> they manage clusters that service web applications.

I can answer that question. **NO**. We don't offer anything like that
and if we wanted to (we don't), we probably would need even stricter
security measures (*), because with the number-crunching, disks and
(especially) two of the fattest pipes into the internet and internet2
dorsals that you can buy, we are the spammer (and maybe bitcoing
miner) pipe dream. Not sure how we compare to "normal" online biz, but
we are constantly under attack, as far as I know (I'm not in the
security team, so take this with a grain of salt).

(*) at the moment, the access to our infrastructure is possible only
via ssh using both a mnemonic password and an OTP.

> It's all very primitive imiho, but it's the standard in our
> space.

For me, it has simply always "just worked", so I did not pay attention
to it. This will probably change on the next machine, since the group
I work in will be tasked to install also the open source MPI
implementations (which so far we did not support).

Cheers,
Davide