A kernel's theoretical speed-of-light estimate varies somewhat depending on whether its data begins on the CPU or in GPU DRAM.

“that's the problem is like for for matrix multiplication it's very easy to compute um this like speed of light kind of uh estimate of what the fastest kernel can be and like this is also assuming like you know maybe all of your”

“all your data starts on the cpu or maybe it starts in dram on the gpu etc like this changes these these numbers slightly”