Gaussian 16 for Linux is a high-performance computational chemistry package designed for electronic structure modeling. It is optimized to leverage Linux-based high-performance computing (HPC) clusters and workstations. Key Linux-Specific Features
GPU Support: Leverages NVIDIA GPUs (A100, V100, P100, K80, K40) under Linux for massive speedups in Hartree-Fock and DFT calculations.
Parallel Computing: Supports shared-memory (Linda) and distributed-memory parallelization to scale across multiple CPU cores and network nodes.
Optimized Memory Management: Features dynamic task allocation and an optimized memory algorithm that reduces disk I/O during complex CCSD iterations.
Linux CLI Integration: Designed for headless operation via the terminal, allowing users to submit jobs through bash scripts or queueing systems like SLURM. Automation & Workflow Enhancements gaussian 16 linux
Multi-Step Jobs: Automate geometry optimizations followed immediately by frequency or single-point energy calculations. Enhanced Optimization Aids: Recompute force constants every nthn raised to the t h power
step and retrieve geometry from any specific step in the checkpoint file.
Flexible Constraints: Advanced atom freezing by fragment, residue, or ONIOM layer during molecular optimizations.
GEDIIS Algorithm: Includes significant enhancements to the GEDIIS algorithm for faster, more reliable geometry convergence. Administrative & Setup Tools Gaussian 16 for Linux is a high-performance computational
Group Permissions: Built-in support for multi-user environments where specific groups can be assigned ownership of Gaussian files.
Scratch Management: Explicit controls for defining high-speed scratch directories to handle large .rwf files generated during calculations.
Default.Route File: Allows system administrators to set global calculation defaults for all users on a machine.
💡 Pro Tip: Use the g16.profile or g16.login scripts provided in the installation directory to automatically set up your environment variables ($g16root, $GAUSS_SCRDIR) upon login. Gaussian 16 Features at a Glance node02:2
export GAUSS_LFLAGS='-v -ib'
Ease-of-Use Features * Automated counterpoise calculations. * Automated optimization followed by frequency or single point energy. Gaussian.com Gaussian 16 Rev. C.01/C.02 Release Notes
Use InfiniBand (IB) or high-speed Ethernet. Set:
export LINDA_HOSTS=node01:2,node02:2
export GAUSS_LFLAGS='-v -ib'
Gaussian 16 on Linux is the most powerful and widely used version of the software. It excels in performance, scalability, and features, but the user experience is hampered by outdated documentation, licensing, and the lack of a native GUI.
Gaussian Inc. officially supports Red Hat Enterprise Linux (RHEL) and SUSE Linux Enterprise Server (SLES). However, the scientific community has great success with Ubuntu LTS, Debian, and CentOS Stream.
Reload your shell and test:
source ~/.bashrc
g16 < /dev/null
You should see the Gaussian banner and no fatal errors.