In many files or layers-to-many batch parameter sets processing, Modeler processes each input file or layer with a unique batch parameter set, which you define on a module's control panel.
Input file or layer processing sequence
Modeler applies the first batch parameter set to the first input file or layer and then stores the result in the first output file. Modeler then applies the second batch parameter set to the second input file or layer and stores the result to the second output file or appends it as a layer. This process continues until all input files or layers are processed.
Executing a model set up for batch mode in single execution mode
You can configure all modules of a model in batch mode and then run the model in non-batch mode to check that your model is correctly set up. In this process, the parameter set that displays on the Input Params 1 panel of a module's control panel is applied.