code: @Override public void setupLocal() {
      _ok = new int[_files.length];
      for( int i = 0; i < _files.length; ++i ) {
        File f = new File(_files[i]);
        if( f.exists() && (f.length()==_sizes[i]) )
          _ok[i] = 1;
      }
    }
docs: OUTPUT: files which are globally compatible