[Gate-users] Problems with Root Output: Hits;9 Hits;10

[Lena Thomas]

Hi David,

it seems that I have the same or a similar problem: in one of my 
PET-simulations I got several hit-trees. In another PET-simulation I got 
several hit-trees and several singles-trees. My root-files are about 
500MB. However, Didier wrote: "Normally GATE creates 1 hit tree and 1 
single tree by simulation".
Can anybody explain the reason for these differences?

I use Gate_v6.0_p01, geant4.9.3.p03, root 5.2.6/00 on ubuntu.

Thanks
Lena



David Watts wrote:
> I'm having big problems getting my root output to work. I've tried with my own 
> simulations, and the ones of the examples, and I have similar problems.
>
> The simulation(s) seem to run just fine. The root output file is created but 
> when I open it what I see is multiple Hits and Singles files, namely, that is 
> says Hits;11 or Hits;12 and Singles;2 and Singles;3 and things like that. 
> There are often data inside, and each has a different amount of entries (the 
> lower valued file often has round number of entries like 5000), but how am i 
> supposed to know which file is right?? 
>
> Worse still, the problem seems to depend on the size of the output data. Ie, 
> without changing anything in the macro except the source activity, I go from a 
> normal output, say Hits;1, Singles;1, etc... to Hits; 9 and Hits; 10... 
>
> It's as if Root doesn't like big files and is somehow splitting the data and 
> only showing the last part of something. I say this cause the weirdness 
> increases with the activity of my source. However, my root files are only about 
> 28MB large at best... and problems come even when they are a few MB.
>
> Plus, my coincidence and delay trees show leaves but they are not filled (they 
> don't plot anything). 
>
> I'm running Gate v6.1 and Geant 4.9.4p01... and Root 5.28/00b on Kubuntu 
> 10.04. I have seen the exact same problems with Gate 6.0 and Geant 4.9.2 and 
> several other versions of Root like 5.22 and 5.24. 
>
> I'm at my wits end with this having tried many things, including the complete 
> reinstall of all software starting from CLHEP, upgrading to the latest 
> versions, but it hasn't changed ANYTHING! 
>
> Has anyone seen this problem before??? 
> Please help! I've already spent two weeks fighting this bug and seems no one 
> has this problem. 
>
> Cheers, 
> Dave.
>
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