I believe they mean GPU threads. Plenty of cuda files in their repository.

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 6 hours ago \| parent \| next [-]
		You can launch much more logical threads than the available physical threads. The GPU scheduler will automatically dispatch the work to the SMs.
	▲	ks6g10 3 hours ago \| parent \| prev \| next [-]
		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 6 hours ago \| parent \| prev [-]
		I guess they never say that they execute at the same time technically haha