ILOG CPLEX 11.0 User's Manual > Continuous Optimization > Solving LPs: Barrier Optimizer > Interpreting the Barrier Log File > Ordering-Algorithm Time in the Log File

After the number of nonzeros in the lower triangle of AAT, ILOG CPLEX records the time required by the ordering algorithm. (The ILOG CPLEX Barrier Optimizer offers you a choice of several ordering algorithms, explained in Choosing an Ordering Algorithm.) This section in the log file indicates which ordering algorithm the default Automatic setting chose.