Robert,
thanks for all your help working with this young guy.

Did you get a chance to write some text for the GENIE arXiV?

regards
Steve

On 7/6/2015 3:07 PM, Robert W Hatcher wrote:
> Both of those should work to enable your specific UserPhysicsOptions.xml but wiping the GXMLPATH means that GENIE doesn't know where to look for the cross-section splines anymore.  Was that the issue?
>
> One needs to be very careful about tweaking UserPhyicsOptions.xml -- changing some parameters means that you _must_ regenerate cross-section splines in order to be internally consistent.
>
> Also, GENIE no longer distributes Messenger_production.xml which the ART module GENIEHelper uses to quiet down lots of GENIE messages.  So that's packaged up with the distributed genie_phyopt UPS product.
>
> NOvA specific aside:
>
> I was asked to generate some variants for the NOvA ND group to study systematics of generation w/ alternate values vs. reweighting.  To that end I made some UPS products:
>
>    genie_xsec-2.8.6-noarch-MaCCQE-1sig.tar.bz2
>    genie_xsec-2.8.6-noarch-MaCCQE+1sig.tar.bz2
>
> These have both cross-section splines _and_ the corresponding UserPhysicsOptions.xml file together.
>
> Perhaps we should discuss what values you are changing and decide whether there needs to be new splines, and then coordinate the generation of the same so as to be consistent.
>
> -robert
>
>
> Robert W. Hatcher
> FNAL CS/SCD/SCS/PDS  | WH9NW
> PO Box 500 MS 234, Batavia IL 60510
> [log in to unmask]
> office: 630-840-3102
> cell:   630-234-0091
>
>
> On Jul 6, 2015, at 1:43 PM, Xinchun Tian <[log in to unmask]> wrote:
>
>> Dear Costas and Robert,
>>
>> Thanks for the quick reply.
>>
>> export GXMLPATH=/nova/app/users/tianxc/genie/v2_8_0i/syst:${GXMLPATH}
>> Instead of
>> export GXMLPATH=/nova/app/users/tianxc/genie/v2_8_0i/syst
>> Does the trick.
>>
>> Thanks,
>> Xinchun
>>
>> From: Robert W Hatcher <[log in to unmask]>
>> Date: Saturday, July 4, 2015 at 3:32 PM
>> To: Xinchun Tian <[log in to unmask]>
>> Cc: "[log in to unmask]" <[log in to unmask]>
>> Subject: Re: How to use my own UserPhysicsOptions.xml
>>
>> Xinchun
>>    Yes it will work as Costas says BUT you must put your path ahead of the one in GXMLPATH put there by the UPS product "genie_phyopt".  NOvA uses that to force Pythia to do the charm & tau decays during GENIE because G4 doesn't properly decay charm hadrons (and only recently started decaying taus).  So you might want to start from _that_ version.
>>
>> Robert W. Hatcher    |  [log in to unmask] 630-840-3102
>> FNAL CD/FPE/ADS/DSG  |  MS 220, PO Box 500, Batavia IL 60510
>>
>> On Jul 4, 2015, at 1:39 PM, Xinchun Tian <[log in to unmask]> wrote:
>>
>>> Hi Costas,
>>>
>>> It is 2.8.0, specially 2.8.0i at NOvA.
>>>
>>> Thanks,
>>> Xinchun
>>>
>>> On 7/4/15, 2:36 PM, "[log in to unmask]"
>>> <[log in to unmask]> wrote:
>>>
>>>> Hi Xinchun.
>>>>
>>>> GXMLPATH should still work. Which GENIE version are you using?
>>>>
>>>> cheers
>>>> Costas
>>>>
>>>> --
>>>> Dr Constantinos Andreopoulos
>>>> Associate Professor (Reader) in Experimental Particle Physics
>>>> University of Liverpool & STFC Rutherford Appleton Lab
>>>> +44-(0)7540 847333 (Mobile)
>>>> +44-(0)1235 445091 (Office/RAL)
>>>> +44-(0)1517 943201 (Office/Liverpool)
>>>> http://costas.andreopoulos.eu
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On 4 Jul 2015, at 19:11, Xinchun Tian
>>>> <[log in to unmask]<mailto:[log in to unmask]>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> There is an official GENIE installation and I want to change the
>>>> parameters in UserPhysicsOptions.xml and use my local copy of
>>>> UserPhysicsOptions.xml. It worked some time ago by setting GXMLPATH, but
>>>> it seems that it does not work any longer.
>>>>
>>>> What is the correct procedure to to do that?
>>>>
>>>> Thanks,
>>>> Xinchun