[pixelesque]

Fair enough, but that's then only absolutely max 1024 threads per SM, which wouldn't get anywhere near 1 million, given 5090 only has 192 SMs...

Future proofing I guess...

[cyber_kinetist]

You can launch much more logical threads than the available physical threads. The GPU scheduler will automatically dispatch the work to the SMs.

[ks6g10]

Just like 2 threads can execute on the same core at the "same" time, i.e. no synchronization, the same is true for GPU threads/ thread groups.

[zipy124]

I guess they never say that they execute at the same time technically haha