[Rocks-Discuss] MPI using HPC Roll on VM Container

Shamil CM

unread,

Feb 25, 2012, 7:03:57 AM2/25/12

to Discussion of Rocks Clusters

Hi,

Can we run MPI programs using HPC rolls on nodes configured as VM
Containers, just as we do if the appliace type was Compute. Is there any
other configuration required. I dont have any virtual compute nodes inside
the VM Containers.

Regards,
Shamil

-
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.sdsc.edu/pipermail/npaci-rocks-discussion/attachments/20120225/3282a265/attachment.html

Hung-Sheng Tsao (laoTsao)

unread,

Feb 25, 2012, 7:16:11 AM2/25/12

to Discussion of Rocks Clusters, Discussion of Rocks Clusters

in theory this is possible, just like using the cloud
in practice you still need to partition the cpu and setup the queue with the vcpu of your VM
these vcpu will not be used by the node or other VM
IMHO, unless you need some security reason to hard partition your node/cluster
a private cluster/cloud will have better utilization without VM
-LT

Sent from my iPad

Luca Clementi

unread,

Feb 27, 2012, 12:05:11 PM2/27/12

to Discussion of Rocks Clusters

Theoretically yes, but you have to do some work...
You have to configure SGE to submit host to that machine (Rocks
doesn't include it automatically as it does for compute).

Moreover Dom0 (at least on 5.4.3) are set up so that only 1 vcpu and
700MB of RAM are allocated to them, so you also have to change that.