How to use multiple GPUs for a simulation?

[Gwansuk Kang]

Hi

I have two GPUs(NVIDIA RTX A6000 48GB *2) on a workstation.
when I set the 'Number of GPUs' to 2 in the solver setting and press the Run button to run the simulation, it failed after a while.
Here is the part of Solver-log.
I would greatly appreciate it if you could resolve this issue or know the reason.

Best,
Gwansuk.

[Problem Class]: Initializing object
[AxisGrid Class]: Initializing object (default constructor)
[AxisGrid Class]: Initializing object (default constructor)
[AxisGrid Class]: Initializing object (default constructor)
[Point Source Class]: Initializing object
[Problem_LAPWEII Class]: Initializing object
[Constants Class]: Initializing object
[AxisGrid Class]: Initializing axis data
[AxisGrid Class]: Initializing axis data
[AxisGrid Class]: Initializing axis data
[Voxel Class]: Initialize voxel array
[Voxel Class]: Allocating memory for voxel array
[Problem_LAPWEII Class]: Calculating time step
[Problem_LAPWEII Class]: Calculating background sound speed
[Solver Class]: Initializing object
[PMLHandler::PMLHandler()]: Creating PMLHandler object
[solver_LAPWEII Class]: Initializing Solver
[solver_LAPWEII Class]: Copying constants
[solver_LAPWEII Class]: Initializing PML
[PMLHandler::initialize()]: Initializing PMLHandler Object

[montanaro]

Could you paste the whole log?

If the problem runs in 1 GPU, could you test that?

Can you try reducing the grid resolution and see if it runs successfully then?