Why can't I save this 3D histograms?

There is this 3 dimensional quantity that I want to see, so I decided to use 3D histograms, looked up some examples and wrote what I needed, there’s no problem getting the data in the histograms, but when I try to save them, I get a single message:

Segmentation fault (core dumped)

which isn’t much to go on to fin d out what is the problem.

I stripped my code of everything, and I get the same message:

#include <iostream>

#include "TH3D.h"
#include "TFile.h"

using namespace std;

int main() 
  TFile* histos = new TFile("histos.root","recreate");

  int r = 1000;
  double limit = 10000;
  TH3D *hist_leading_position = new TH3D("hist_leading_position", "Position", r, -limit, limit, r, -limit, limit, r, -limit, limit);


cout<<"This will be printed, no problem so far"<<endl;

cout<<"This won't be printed, the problem is in the previous lines"<<endl;

  return 0;

What is the problem?, what am I missing here?.


The problem is the size of your histogram. Its size is 1GB . Histogram are memory resident objects. May be you should consider using THnSparse .

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