Documentation

USER MANUALS
User Manuals are available for immediate download:

Knitro 5.2 (PDF, 517k)

Ziena License Manager (PDF, 320k)
Knitro 5.1 for Mathematica (PDF, 360k)
Quick Ref: Knitro Options for AMPL (PDF, 50k)

Older releases:

Knitro 5.1 (PDF, 480k)
Knitro 5.0 (PDF, 300k)

Discussion Forum is at a Google group called "KNITRO". Anyone can view the discussions. To post a message you need to sign into Google, but Google accounts are free.

TECHNICAL REFERENCES

The primary technical reference is:
R. H. Byrd, J. Nocedal, and R. A. Waltz, "KNITRO: An Integrated Package for Nonlinear Optimization" in Large-Scale Nonlinear Optimization, G. di Pillo and M. Roma, eds, pp. 35-59 (2006), Springer-Verlag. The KNITRO User Manual also contains a comprehensive list of technical references.

The Interior Point algorithms are described in:
R. Byrd, M. E. Hribar, and J. Nocedal, "An Interior Point Method for Large Scale Nonlinear Programming" SIAM J. Optimization, 9,4, pp. 877-900 (1999).

Supporting theory is given in:
R. Byrd, J.C. Gilbert, and J. Nocedal, "A Trust Region Method Based on Interior Point Techniques for Nonlinear Programming", Mathematical Programming A, 89: 149-185 (2000).

R. Byrd, Guanghui Liu, and J. Nocedal, "On the Local Behavior of an Interior Point Method for Nonlinear Programming" in Numerical Analysis, D. F. Griffiths and D. J. Higham, eds, pp. 37-56 (1997), Addison Wesley Longman.