roofline

6 notes carry this tag — 1 moc, 2 claims, 1 capture, 1 concept, 1 essay. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Essays

The heart was always a pump

essay draft 2026-07-13 · systolic-array, TPU, hardware, memory-bandwidth, roofline

Everything else

Peak AI hardware compute has scaled roughly 600x faster than memory bandwidth (and ~2,000x faster than interconnect bandwidth) over 20 years, making memory bandwidth the dominant AI-serving bottleneck

claim seedling Tier 1 2026-08-12 · memory-wall, memory-bandwidth, ai-hardware, roofline, arithmetic-intensity
Data movement, not arithmetic, is the ceiling — a 1994 diagnosis rediscovered across operating systems, genomics, and LLM serving

topic map 2026-08-08 · memory-wall, memory-bandwidth, roofline, computer-architecture, processing-in-memory
The roofline model formalizes a system's attainable performance as the minimum of peak compute throughput and memory-bandwidth × operational intensity

note seedling Tier 1 2026-07-12 · roofline, performance-model, memory-bandwidth, computer-architecture, hardware
Despite a purpose-built systolic matrix engine, four of Google's six production TPU neural-net workloads are memory-bandwidth-bound, not compute-bound

claim seedling Tier 1 2026-07-12 · TPU, roofline, memory-bandwidth, hardware, AI-inference
The systolic array — a heart-named 1978 idea became the 'heart' of the AI chip

capture promoted Tier 1 2026-07-11 · systolic-array, TPU, hardware, matrix-multiply, roofline