Remark on Algorithm 702 - The updated truncated Newton minimization package

Dexuan Xie, Tamar Schlick

Research output: Contribution to journalArticlepeer-review


A truncated Newton minimization package, TNPACK, was described in ACM Transactions on Mathematical Software 14, 1 (Mar. 1992), pp. 46-111. Modifications to enhance performance, especially for large-scale minimization of molecular potential functions, are described here. They involve three program segments of TNPACK: negative curvature test, modified Cholesky factorization, and line-search stopping rule.

Original languageEnglish (US)
Pages (from-to)108-122
Number of pages15
JournalACM Transactions on Mathematical Software
Issue number1
StatePublished - Mar 1999


  • Algorithms
  • G.1.6 [Numerical Analysis]: Optimization - nonlinear programming
  • G.4 [Mathematics of Computing]: Mathematical Software
  • Indefinite preconditioner
  • J.3 [Computer Applications]: Life and Medical Sciences
  • Performance

ASJC Scopus subject areas

  • Software
  • Applied Mathematics


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