Comment by zargon
6 hours ago
If someone doesn't specifically say prefill then they always mean decode speed. I have never seen an exception. Most people just ignore prefill.
6 hours ago
If someone doesn't specifically say prefill then they always mean decode speed. I have never seen an exception. Most people just ignore prefill.
But isn't the prefill speed the bottleneck in some systems* ?
Sure it's order of magnitude faster (10x on Apple Metal?) but there's also order of magnitude more tokens to process, especially for tasks involving summarization of some sort.
But point taken that the parent numbers are probably decode
* Specifically, Mac metal, which is what parent numbers are about
Yes, definitely it's the bottleneck for most use cases besides "chatting". It's the reason I have never bought a Mac for LLM purposes.
It's frustrating when trying to find benchmarks because almost everyone gives decode speed without mentioning prefill speed.