The Large-Scale LP Solver
Because the Large-Scale LP Solver represents problems in an internal "sparse
matrix" form, it can handle LP models of many thousands of variables and
constraints, which would require megabytes of memory and hours of solution time using
the standard Solver, or even the Premium Solver.
Due to the intrinsic finite precision of computer arithmetic, which becomes an
important factor in large LP models, a standard Simplex method such as that
used in the standard Solver or the Premium Solver may be foiled by numerical
"instability" and fail to find the optimal solution. The Large-Scale LP Solver
uses sophisticated methods of scaling, matrix factorization and pivoting to
overcome the problems of finite precision arithmetic; it can find solutions to LP
models which would have been considered numerically intractable a few years ago.
The same methods contribute to solution speed on problems that formerly took
many "pivots" or iterations to solve.
Please contact Frontline Systems for the latest news on availability of the
Large-Scale LP Solver for Lotus 1-2-3 97 Edition.