Thursday, November 19, 2009

CE Publishing

The Problem

Publishing an inhomogeneous site 'correctly' is not trivial. This is now required in order to pass the new gstat2 Nagios tests. Things to remember -

* Physical is sockets/CPU's and Logical is Cores.
* Physical * Cores = Logical in order to pass the new central Nagios tests.

If your cluster is inhomogeneous then you need to be able to publish both clusters separately or as one or come up with a fudged number. It is made harder as we have one batch system with multiple CE's submitting to it.

Some Solutions

* Sub-Clusters [ what we have implemented at Glasgow ]
* Publishing decimal for cores

our implementation is discussed here.

Please let me know if anything is wrong with this and I will update.

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