Problems using Proof with a simple TSelector

ROOT
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ROOT Version: 6.10/04
Platform: Not Provided
Compiler: Not Provided

Dear root experts,

I’m trying to run a code using proof. I implemented a TSelector as recommended in your guide, but it crashes and I cannot understand why.
My code is here:

https://gitlab.cern.ch/picazio/VtagUncertainties

The TSelector is: vv_light.h/C
and the macro I use to send my Proof jobs is: runvv_light.py

You can make a simple test on just uncommenting l46, in order to run over a small MC sample.

In order to use Proof, you need to uncomment lines: 32 and 90.
The data are on cern eos and you can access to them running the code on lxplus.

The code works perfectly fine if I do not enable Proof.

Please, let me know if you need any other info.

Thanks a lot in advance for your help and cheers,
Attilio

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Hi all,

I just figured out you could probably have problem accessing my gitlab repository. I put the relevant files in attachment.

Cheers,
Attilio

vv_light.C (11.5 KB)
vv_light.h (7.4 KB)

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and here the python scripts I mentioned in the first message

listAux.py (5.8 KB)
runvv_light.py (1.9 KB)

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I guess @ganis can help you

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Dear Attilio,

The first thing I see is that SlaveBegin is empty. For historical reasons, things in PROOF are initialized in SlaveBegin. I suggest to retry by adding a call to Begin in SlaveBegin.

If this does not help, please post the backtrace of the crash.

G Ganis

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Hi,

thanks a lot for the suggestion. Indeed, it now works perfectly fine!

Thanks again and cheers,
Attilio