[Halld-offline] Learning to use hdgeant

Sean Dobbs s-dobbs at northwestern.edu
Fri Feb 17 17:00:52 EST 2017

Hi Reinhard, Viren,

First a general comment:  If you are generating simulated data, you should
not use the "default" CCDB variation - it will give you incorrect results
that will undoubtably leave you confused and unhappy.  I suggest starting
with the "mc_generic" variation, which provide a default run-independent
set of calibrations & conditions.  When you're ready to generate
simulations that correspond to actual data taking, you can use the "mc"

It can be selected by setting the environment variable

To your question, could you please describe how you are running mcsmear?
It seems like you are running hdgeant in the mode where it automatically
launches mcsmear?


On Fri, Feb 17, 2017 at 4:49 PM Reinhard Schumacher <schumacher at cmu.edu>

> Hello Group
> I was trying to learn how to run hdgeant and in the process I encountered
> this error (see screenshots attached below): The CCDB context I am loading
> from the SQLite database does not correspond to he “default” version. The
> program normally outputs the hdgeant.hddm file but throws this error during
> the smearing process. I wonder what I need to change in my environment to
> get this to work. Currently my JANA_CALIB_URL =
> sqlite:////home/gluex/ccdb/sqlite/ccdb_2017_02_02.sqlite. I tried the
> latest version: ccdb_2017_02_07.sqlite as well, but it didn’t work.
> Any guidance is much appreciated.
> Thanks in advance
> Viren Bajaj
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