Dear Antonio,
EGI UMD verifiers tested, although not extensively, a mixed
configuration with CREAM and WN from different EMI versions.
CREAM EMI-3 and WN EMI-2 are compatible. And also the other way around.
What is not advisable is to have some WN from EMI-2 and other from
EMI-3 in the same subcluster, because some applications such as MPI do
not work properly with different WN versions together.
Regards
Peter
On 11 February 2014 18:47, Antonio Delgado Peris
<[log in to unmask]> wrote:
> Dear all,
>
> We have recently received a message regarding the UMD-2/EMI-2
> decommissioning calendar, notifying us about the need to start planning the
> upgrade to EMI/UMD-3 services.
>
> Thinking about a possible gradual upgrade, I would like to ask about
> compatibility issues when mixing EMI/UMD-2 and EMI/UMD-3 services, in
> particular in what regards WNs, glexec, CREAMs, Argus and BDII. E.g.: can we
> mix different WNs from both releases and different CREAMs from both also?
>
> Given that I've found no warning against this, my first idea is that all
> combinations should be possible (except for the case of APEL**), but I would
> like to be sure.
>
> ** Warned here: https://wiki.egi.eu/wiki/UMD-3:UMD-3.0.0#emi.apel.sl6.x86_64
>
> Thanks a lot for any comments!
>
> Cheers,
>
> Antonio
--
Peter Solagna
EGI.eu - Senior Operations Manager
email: [log in to unmask]
skype: peter.solagna.egi
Mobile: +31(0)630373070
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