DMPfold: number of models produced using "10 500" feature in "run_dmpfold.sh"?
The sequence_n.pdb files are temporary and are combined into an ensemble.i.pdb file after each iteration i. That file has many structures in. After the run is complete there will be a final_1.pdb file. Don't worry about the cluster files. If you are interested in what they do, consult the run_dmpfold.sh script and see what it is doing line by line.

As I have said multiple times elsewhere, you should run the script with default parameters and let it run to completion. Then use the final_1.pdb and any other final_*.pdb files as the output. If you want more structures, use the ensemble.i.pdb files.