[Deeppwg] [EXTERNAL] Issue with latest SIDIS OSG MC Produciton

[Marco Contalbrigo]

Dear all,
please notice the message below by Giovanni.
Experts are looking into the issue and I hope
news will come soon.
Bests, Marco.

---------- Forwarded message ----------
Date: Thu, 1 Apr 2021 11:39:37 -0400
From: Giovanni Angelini <gangel at email.gwu.edu>
To: Marco Contalbrigo <mcontalb at fe.infn.it>
Cc: Harut Avakian <avakian at jlab.org>, Bill Briscoe <briscoe at gwu.edu>
Subject: Issue with latest MC Produciton

Dear Marco,
I am writing you in order to inform the Deep Processes that
unfortunately we discovered a bug in the latest MC SIDIS production.
For this reason please inform the group that they should not use such
production.

For some reasons the random generator seems to don't work properly in 
CLASDIS I have used locally on the farm. Events were not properly
randomized, however their vertex position was always correctly
randomized. This has hidden the problem to my scripts that were
looking for identical events. Harut has been informed of this issue
and is looking into that. We have only 1/100 of the production to be 
valid. I will remove all the files form work that are not useful and
leave only the subset the can be still used.

This issue was not present in the generator version we used for the
previous production (used for the first publications) and that
production is still to be consider valid.

Best,
Giovanni Angelini