Gaussian 09 v7.0 Rev A.02

Gaussian 09 is the latest in the Gaussian series of programs. It provides state-of-the-art capabilities for electronic structure modeling. Gaussian 09 is licensed for a wide variety of computer systems. All versions of Gaussian 09 contain every scientific/modeling feature, and none imposes any artificial limitations on calculations other than your computing resources and patience. The Gaussian 09 versions for Windows computers and Power-PC-based Mac OS X computers are known as Gaussian 09W and Gaussian 09M (respectively). Gaussian 09 for Intel-based Mac OS X computers is generally licensed in the same way as other Linux/UNIX versions. A single-CPU 32-bit version is also available as a shrink-wrap licensed product which is known as Gaussian 09IM.

Fundamental Algorithms
Calculation of 1- & 2-electron integrals over any contracted gaussian functions
Conventional, direct, semi-direct and in-core algorithms
Linearized computational cost via automated fast multipole methods (FMM) and sparse matrix techniques
Network/cluster and shared memory (SMP) parallelism
Harris initial guess (much more accurate, especially for metals)
Initial guess generated from fragment guesses or fragment SCF solutions
Density fitting and Coulomb engine for pure DFT calculations, including automated generation of fitting basis sets
O(N) exact exchange for HF and hybrid DFT
1D, 2D, 3D periodic boundary conditions (PBC) energies & gradients (HF & DFT)

Home Page: http://www.gaussian.com