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[NOTABUG] Error in MC generation [message #18804]

Thu, 03 December 2015 08:19

kamalpdutta
Messages: 30
Registered: December 2014
Location: Guwahati, India

continuous participant

From: 14.139.207*

Dear all,
I am using Pandaroot version mar15. While generation MC events using the tutorial macros in tutorial/rho , the following error appears for some of the events in the simulation stage,

Error in <TArrayF::At>: index 551452 out of bounds (size: 544960, this: 0x2a099c0)

Is this a serious problem ? What does it mean ?

thanks.

[Updated on: Wed, 03 February 2016 23:30] by Moderator

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Re: Error in MC generation [message #18805 is a reply to message #18804]

Thu, 03 December 2015 09:26

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: 193.170.91*

Hi,
if you go in the wiki FAQ: Troubleshooting PandaRoot Running, you can read that:

https://panda-wiki.gsi.de/foswiki/bin/view/Computing/PandaRootFAQ

Quote:

Q: I see many "Error in < TArrayF::At >:" in my simulation. Should I be concerned?

No, you should not. This is a field warning once the index is outside the boundaries of the field grid. It is safe.

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Re: Error in MC generation [message #18806 is a reply to message #18805]

Thu, 03 December 2015 10:53

kamalpdutta
Messages: 30
Registered: December 2014
Location: Guwahati, India

continuous participant

From: 14.139.207*

Thank you sir. One another issue. Suppose we need 1 million event for a particular decay channel in background study. If we generate 1 million events into two parts separately like 0.5 million each, and then use the two outputs in our analysis to make it 1 million, does it effect on the analysis in any way ?

thanks

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