GPU Inconsistency User Input/Feature Not Implemented

GROMACS version: 2020.2
GROMACS modification: No

I’ve been trying to run the output from Charmm-gui’s membrane builder using 2 GPUs.

My problem is arising during the minimization step thus far:

gmx_gpu mdrun -v -ntmpi 1 -nb gpu -bonded gpu -pme -gpu -npme 1 -deffnm step6.0_minimization

Feature not implemented:
Cannot compute PME interactions on a GPU, because PME GPU does not support not
a dynamical integrator.

Input removing PME calculation:
gmx_gpu mdrun -v -ntmpi 1 -nb gpu -bonded gpu -deffnm step6.0_minimization

Inconsistency in user input:
Bonded interactions on the GPU were required, but not supported for these
simulation settings. Change your settings, or do not require using GPUs.

Here is my mdp input:
integrator = steep
emtol = 1000.0
nsteps = 5000
nstlist = 10
cutoff-scheme = Verlet
rlist = 1.2
vdwtype = Cut-off
vdw-modifier = Force-switch
rvdw_switch = 1.0
rvdw = 1.2
coulombtype = pme
rcoulomb = 1.2
constraints = h-bonds
constraint_algorithm = LINCS

Any feed back or help would be appreciated to at least point me in the right direction. As I havent been able to pinpoint it through googling.

This means you can only run the actual MD simulations using the GPU. Run energy minimization using CPU.

Ahhh thank you very much! That’s good to know!