Since its release in 2019, Gaussian 16 Revision C.01 has served as a significant milestone in the Gaussian software series. As the premier electronic structure modeling package, Gaussian 16 replaced Gaussian 09, with Revision C.01 standing as one of its most stable and widely adopted versions. This article explores the key features, performance enhancements, and practical considerations of Gaussian 16 Rev. C.01, providing a thorough reference for computational chemists who rely on this powerful tool for their research.
For more information on installing and using this revision, refer to the Gaussian 16 Release Notes.
Revision C.01 introduced several refinements aimed at improving accuracy, efficiency, and the range of solvable chemical problems. 1. Enhanced Performance for Large Systems gaussian 16 revision c.01
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This rich data extraction bridges raw quantum outputs directly into machine-learning frameworks or custom population analysis code. Optimized Memory Routines Since its release in 2019, Gaussian 16 Revision C
Revision C.01 optimizes shared-memory parallel (SMP) execution. It reduces communication overhead across large multi-core processors, ensuring better scaling for high-core-count AMD EPYC and Intel Xeon servers. 2. Algorithmic Stability and Bug Fixes
Quantum chemistry software demands immense computational resources. Revision C.01 optimizes how Gaussian interacts with modern server hardware. Pop=NBO7Read for custom NBO input
: On a modern Intel Core i9-12900K desktop processor running Gaussian16W Rev. C.01, a benchmark calculation on a Valinomycin molecule (C54H90N6O18) with 8 parallel threads was nearly as fast as a 32-core server-grade Intel Xeon IceLake processor. This demonstrates the impressive power of modern desktop CPUs for single-node calculations.
for network parallel use; older versions of Linda are incompatible. Memory Management:
True TD-DFT calculations within a solvent equilibrium, allowing for accurate absorption and emission spectra modeling.
Perhaps the most prominent addition in Rev. C.01 is full support for Natural Bond Orbital (NBO) version 7, an external program for analyzing molecular electronic structure. The Population keyword gained several new options: Pop=NPA7 for Natural Population Analysis, Pop=NBO7 for full Natural Bond Orbital Analysis, Pop=NBO7Read for custom NBO input, and Pop=NBO7Delete for analyzing interaction deletions using NBO7. These options allow researchers to perform more sophisticated analyses of charge distributions, bonding patterns, and orbital interactions. Importantly, deletion analyses and optimizations with deletions are now compatible with both NBO6 and NBO7, ensuring backward compatibility while offering the enhanced capabilities of NBO7.