Re: vector<vector<float>> (and Athena)

Hi,

I forgot something in my last mail: the input file. You can either provide your own (and adapt the name of the tree within the cxx file), or you can download the ntuple I use from

lxplus218.cern.ch:/tmp/mann/sandbox/VectorVector/config/user10*.root

You can then provide the path to the input file as a command line option to the executable.

cu,
Alexander

Am 08.09.2010 14:54, schrieb Alexander Mann:
>
> Dear ROOT experts,
>
> since over a week I am struggling with the following problem:
>
> I need to read in vector<vector<float>>s from a ROOT file on the GRID,
> i.e. I need to use a ROOT version that comes with Athena. For this I am
> creating dictionaries with rootcint and using compiled C++ code. The job
> runs fine if I compile against a standalone ROOT version locally. If I
> compile against an Athena ROOT version I get the following error message:
>
> Error in <TBufferFile::CheckByteCount>: object of class
> vector<vector<float> > read too few bytes: 6 instead of 114
>
> As said above, I need to run on the GRID where I cannot use standalone
> ROOT, so I need to find a solution for this problem.
>
> I have set-up a test case on lxplus:
>
> lxplus218.cern.ch, /tmp/mann/ROOT
>
> The script makedistallgood.sh in this directory compiles the code
> against ROOT 5.26.00b and runs the example which should work without
> problems.
>
> Now if you source Athena (e.g. 15.8.0 or 15.9.0) and run
> makedistallbad.sh, the job will fail and give the error message from above.
>
> Please have a look and tell me how I can solve this problem. My
> investigations so far make me believe that the problem is some
> interference with the dictionaries or libraries that come with Athena,
> but I don't know how to make ROOT pick the right streamer function.
>
> Best regards,
> Alexander
>
>
Received on Wed Sep 08 2010 - 16:49:32 CEST