Earlier quoted context omitted.
FPGAs will never rival gpus or TPUs for inference. The main reason is that GPUs aren't really gpus anymore. 50% of the die area or more is for fixed function matrix multiplication units and associated dedicated storage. This just isn't general purpose anymore. FPGAs cannot rival this with their configurable DSP slices. They would need dedicated systolic blocks, which they aren't getting. The closest thing is the vers…
I feel like your entire comment is a self contradicting mess. You say FPGAs won't get dedicated logic for ML, then you say they did. Why does it matter whether the matrix multiplication units inside the AI Engine are a systolic array or not? The multipliers support 512 bit inputs which means 4x8 times 8x4 for bfloat16 with one multiplication per cycle and bigger multiplications with smaller data types. Since it is a…
That being said, versal aie for ml has been a terrible failure. The reasons for why are complicated. One reason is because the memory hierarchy for SRAM is not a unified pool. It's partitioned into tiles and can't be accessed by all cores. additionally, access of this SRAM is only via dma engines and not directly from the cores. Thirdly, the datapaths for feeding the VLIW cores are statically set, and require a software configuration to change at runtime which is slow. Programming this thing makes the cell processor look like a cakewalk. You gotta program dma engines, you program hundreds of VLIW cores, you need to explicitly setup on chip network fabric. I could go on.
Anyway, my point is FPGAs aren't getting ML slices. Some FPGAs do have a completely separate thing that can do ML, but what is shipped is terrible. Hopefully that makes sense.