H2root error

ROOT
1

I compiled ROOT 5.20 on Scientific Linux 5.2.

When using h2root I have the following error:

Error in TTree::Fill: Failed filling branch:h1.timesfb, nbytes=-1
This error is symptomatic of a Tree created as a memory-resident Tree
Instead of doing:
TTree *T = new TTree(…)
TFile *f = new TFile(…)

Notice that compiling ROOT in the same exact way on a fedora machine works fine.

Any help appreciated, I’d really like to use this fast machine to convert ntuples to ROOT.

thanks,
mauri

2

Hi Mauri,

Can you provide the smallest set of files to reproduce this problem (and possibly access to an SL 5.2 machine)?

Thanks,
Philippe

3

Hi Philippe,

digging more, I found that the problem only exists if I’m trying to write out on a samba-mounted disk. If I use the same h2root but write on the local disk, I don’t have any troubles.

That does it for me, as I can move the files later. But I think it would be nice to fix anyway.

Let me know if you need more details or want me to try more things.
I can’t give anybody access to the machines, we have tight security at this lab.

thanks,
mauri

4

There is nothing we can do on our side if you have a problem with your Samba file system ::slight_smile:

Rene