Adapt CP freq for prios algo

mpi/examples/matrix_decomposition/mpi_cholesky_codelets.c

@@ -442,7 +442,8 @@ static void run_cholesky_prio(starpu_data_handle_t **data_handles, int rank, int
 
 		}
 
-		starpu_mpi_submit_checkpoint_template(*checkpoint_p, (int)(2*nblocks - a));
+		if (a%4==3)
+			starpu_mpi_submit_checkpoint_template(*checkpoint_p, (int)(2*nblocks - a));
 		starpu_iteration_pop();
 	}