title: A new parallel algorithm of MP2 energy calculations.
abstract: A new parallel algorithm has been developed for second-order Møller-Plesset perturbation theory (MP2) energy calculations. Its main projected applications are for large molecules, for instance, for the calculation of dispersion interaction. Tests on a moderate number of processors (2-16) show that the program has high CPU and parallel efficiency. Timings are presented for two relatively large molecules, taxol (C(47)H(51)NO(14)) and luciferin (C(11)H(8)N(2)O(3)S(2)), the former with the 6-31G* and 6-311G** basis sets (1,032 and 1,484 basis functions, 164 correlated orbitals), and the latter with the aug-cc-pVDZ and aug-cc-pVTZ basis sets (530 and 1,198 basis functions, 46 correlated orbitals). An MP2 energy calculation on C(130)H(10) (1,970 basis functions, 265 correlated orbitals) completed in less than 2 h on 128 processors.
authors.affiliation: Department of Theoretical Molecular Science, Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Ishimura
authors.forename: Peter
authors.initials: P
authors.lastname: Pulay
authors.forename: Shigeru
authors.initials: S
authors.lastname: Nagase
mesh_terms: D000465:Algorithms; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003198:Computer Simulation; D049454:Firefly Luciferin / Q000737:chemistry; D008958:Models, Molecular; D017239:Paclitaxel / Q000737:chemistry
chemical_list: D049454:Firefly Luciferin; D017239:Paclitaxel