Fixed a problem where ConfigDataset was not giving batches

torch_modules/src/ConfigDataset.cpp

@@ -137,6 +137,10 @@ void ConfigDataset::computeNbToGive()
       smallestSize = sizeLeft;
   }
   for (auto & it : holders)
-    nbToGive[it.first] = std::floor(1.0*it.second.sizeLeft()/smallestSize);
+  {
+    nbToGive[it.first] = std::max<int>(1,std::floor(1.0*it.second.sizeLeft()/smallestSize));
+    if (it.second.sizeLeft() == 0)
+      nbToGive[it.first] = 0;
+  }
 }