Hi
I just spent a half hour talking to David Groep about the directions
that LCAS / LCMAPS is taking from the current situation to their
ultimate plans for a workspace service. It sounded pretty reasonable
and can cover several deployment models, including the current one, the
one Maarten is proposing, and an eventual containerized model where pool
accounts are no longer even needed (two years down the road). I will
try to write something up about it and send it around.
JT
Burke, S (Stephen) wrote:
> LHC Computer Grid - Rollout
>
>>[mailto:[log in to unmask]] On Behalf Of Fabien Wernli
>
> said:
>
>>>Do you have a batch system that can cope with that?
>>
>>If it doesn't we can make it cope with it
>
>
> Maybe you can, but most people are using PBS and I'd guess it would be
> pretty hard to get that to cope.
>
>
>>>And you'd also need to avoid NFS mounts
>>>[...]
>>
>>do you have per user/DN NFS mounts?
>
>
> My point is that if you have any writeable space mounted across all the
> WNs (especially home directories) you would get interference between
> jobs for different users running under the same account.
>
>
>>>[...]
>>>or implicit ssh logins.
>>
>>?
>
>
> At the moment the system usually uses scp to push files back from the WN
> to the CE, and may allow ssh between WNs for MPI jobs, none of which
> would work if the same accounts on different nodes belong to different
> users.
>
> Stephen
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