A question about flag: -multi

GROMACS version:2022.2
GROMACS modification: No
I am now running T-REMD simulation using the following bash script:

but the terminal shows ‘Unknown command-line option -multi’. Is the problem caused by the version of GROMACS (I wrote the script following a tutorial, the version of GROMACS used in that tutorial is 2018)? How to solve this? Thanks!

The option -multi is not available since 2019. From 2019 for a replica-exchange simulations, you can use the option -replex and -multidir. See more here for details Useful mdrun features — GROMACS 2022.2 documentation.

Dear Alessandra,
Thanks so much for your help