#sram
2 articles
01
·Accelerators·★ MEMBER·9 min read
The Inference Chip Wars — Inside the Design Philosophies of Groq, Cerebras, and the LPU
Inference-only chips exist because decoding is limited by reading, not by arithmetic. From zero background: the two answers — put everything in SRAM (Groq/LPU) and make the chip a whole wafer (Cerebras) — the software counterattack, and the arithmetic you need to read the market without swallowing vendor benchmarks whole.
02
·Computer Architecture·★ MEMBER·PAPER·9 min read
The GPU Memory Hierarchy — HBM, SRAM, Registers, and Why Movement Wins
What sets a GPU's speed is not the arithmetic units but where the data sits — registers, shared memory, L2 or HBM — and how many times it is moved. Capacities and bandwidths by order of magnitude, arithmetic intensity and tiling, a roofline per level of the hierarchy, and finally FlashAttention: more FLOPs, less time.