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pixelesquetoday at 11:41 AM3 repliesview on HN

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...


Replies

cyber_kinetisttoday at 11:56 AM

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

ks6g10today at 3:24 PM

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.

zipy124today at 12:09 PM

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