[Gate-users] problem in merge using "hadd" command

[Hadi Rezaei]

Hi Arthur
Thank you so much for your help. It is helpful but hadd about 300 GB root
file data.
Best.
Hadi

On Wed, Feb 3, 2021 at 1:56 PM Arthur Bon <arthur_MonteCarlo at outlook.fr>
wrote:

> Dear Hadi,
>
>
>
> Indeed 100 Gb is the default limit for a single Root file.
>
>
>
> To override it you have to go through a script by changing the size limit
> parameter.
>
>
>
> Some examples here :
>
>
>
> https://root-forum.cern.ch/t/root-6-04-14-hadd-100gb-and-rootlogon/24581/3
>
>
>
> https://www.programmersought.com/article/2967473156/
>
>
>
> I don't know what you're doing but keep in mind that it's more efficient
> to read several "small" files in a row than a "big" one.
>
>
>
> Regards,
>
> Arthur
>
>
>
>
>
> *De :* Gate-users <gate-users-bounces at lists.opengatecollaboration.org> *De
> la part de* Hadi Rezaei
> *Envoyé :* mercredi 3 février 2021 10:59
> *À :* gate-users at lists.opengatecollaboration.org
> *Objet :* [Gate-users] problem in merge using "hadd" command
>
>
>
> Dear all
>
> I used the "hadd" command to merge 15 jobs with a size of about 420 GB but
> I found the following error. Did anyone face this error.?
>
> Can not the cluster tools merge more than 100GB?
>
>
>
> "Fatal in <TFileMerger::RecursiveRemove>: Output file of the TFile Merger
> (targeting resultxcat5s.root) has been deleted (likely due to a TTree
> larger than 100Gb)"
>
>
>
> Regards.
>
> Hadi
>
>
>
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