Articles | Volume 15, issue 7
Geosci. Model Dev., 15, 2731–2762, 2022
Geosci. Model Dev., 15, 2731–2762, 2022
Model description paper
05 Apr 2022
Model description paper | 05 Apr 2022

Massive-Parallel Trajectory Calculations version 2.2 (MPTRAC-2.2): Lagrangian transport simulations on graphics processing units (GPUs)

Lars Hoffmann et al.


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2021-382', Anonymous Referee #1, 05 Feb 2022
  • RC2: 'Comment on gmd-2021-382', Anonymous Referee #2, 08 Feb 2022
  • AC1: 'Comment on gmd-2021-382', Lars Hoffmann, 08 Mar 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Lars Hoffmann on behalf of the Authors (08 Mar 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (10 Mar 2022) by Christoph Knote
Short summary
We describe the new version (2.2) of the Lagrangian transport model MPTRAC, which has been ported for application on GPUs. The model was verified by comparing kinematic trajectories and synthetic tracer simulations for the free troposphere and stratosphere from GPUs and CPUs. Benchmarking showed a speed-up of a factor of 16 of GPU-enabled simulations compared to CPU-only runs, indicating the great potential of applying GPUs for Lagrangian transport simulations on upcoming HPC systems.