 Despite the lack of a graphical controller interface in the standard ( non @-@ server ) Mac OS X distribution , it is possible to set up an Xgrid controller via the command line tools <unk> and <unk> . Once the Xgrid controller daemon is running , administration of the grid with Apple 's Xgrid Admin tool is possible . Some applications , such as <unk> , provided Xgrid controller capability through their user interfaces . 
