[gridengine users] Upgrading form SGE to OGE

Tina Friedrich Tina.Friedrich at diamond.ac.uk
Tue Sep 10 09:40:24 UTC 2013

Hi Txema,

I recently upgrades our Grid Engine from SGE6.2u4 (I think it was) to 
OGE8.1.3. No rocks though, so I don't know any details on that.

What I basically did was:

1) compile and install OGE into a different path
2) configure OGE to use different communication ports than our old 
3) dump and import our configuration (using the provided scripts)

I then simply ran both SGE6.2 and OGE8.1.3 initially (so it would be 
easy to fall back), and disabled all queues on the old installation.

SGE6.2 and OGE8.1.3 execd's happily coexist on the same nodes; however, 
I found that the qmaster processes don't, unfortunately.

But yes, there are no real problems having both in the system / active - 
as long as their communication ports are different.

I can't remember if I ever tried having SGE6.2 execds talk to OGE8.1.3 - 
our installation is on an NFS share (i.e. not local to the nodes), so I 
do not actually need to install anything on the nodes to start the 
execd; and as I said, I simply started both execds, at least for an 
initial period.


On 10/09/13 09:58, Txema Heredia Genestar wrote:
> Hi all,
> I have a cluster in production running rocks-cluster 6.0 using SGE6.2u5.
> SGE6.2u5 has a bug that kills the qmaster when an amount of jobs using
> both -pe and -hold_jid are used. OGE (theoretically) has this bug fixed.
> What is the safest/cleanest way to upgrade from SGE to OGE? Should I
> install the rocks-6.1 OGE roll? Will this keep/respect the current SGE
> configuration or will it wipe it clean? Is the OGE daemon compatible
> with SGE clients or should I update the system as a whole? Can I have
> both SGE and OGE at once in the system? Should I compile OGE from source
> and override all SGE in the cluster?
> Thanks in advance,
> Txema
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Tina Friedrich, Computer Systems Administrator, Diamond Light Source Ltd
Diamond House, Harwell Science and Innovation Campus - 01235 77 8442

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