FVSubgridZ failure on dace:gpu backend #410
Description
FVSubgridZ leads to a CUDA 701 when ran under dace:gpu. The underlying cause is an overflow of the registers leading to cuda launch failure.
Temporary workaround as introduced in PR #400 is a skip_test that cancelled our translate test for this particular backend.
Avenue for solutions:
- break code to have a smaller number of tracers updated
- change the block/thread configuration for the stencil
- skip field_to_scalar OIR pass (in combination with the above)
- deeper fix of the backend in GT4Py (tbd)
WARNING: this probably also fail when doing orchestration, it remains untested