https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104364
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Thomas Schwinge from comment #0)
> ... but only seen regressing for:
>
> - Nvidia Tesla K20c, Driver Version: 346.46
> - Nvidia Tesla K20c, Driver Version: 455.38
> - Nvidia Tesla K40c, Driver Version: 455.38
> - Nvidia Tesla K80, Driver Version: 440.33.01
>
> ... and never seen regressing for:
>
> - Nvidia Quadro P1000, Driver Version: 450.119.03
> - Nvidia GeForce GTX 1080, Driver Version: 440.33.01
> - Nvidia TITAN V, Driver Version: 455.23.05
>
> (What is the underlying characteristic here?)
Good question.
I've tested this using (recommended) driver 470.94 on boards:
- Kepler (Geforce GT 710)
- Maxwell (Quadro K620)
- Pascal (Geforce GT 1030)
- Turing (T400)
while iterating over dimensions { -mptx=3.1 , -mptx=6.3 } x {
GOMP_NVPTX_JIT=-O0, <default> }.
So I'm slightly surprised that I didn't see any regressions.
