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computer-architecture

10 notes carry this tag — 1 moc, 5 claims, 1 question, 2 captures, 1 concept. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

• 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
• Does a primary source confirm CRISP's '20 hours to less than a second' DNA-alignment speedup from processing-in-memory?
  capture promoted Tier 1 2026-07-30 · processing-in-memory, genomics, sequence-alignment, CRISP, computer-architecture
• No primary source confirms CRISP's claim that PIM cut DNA-alignment time from '20 hours to less than a second'
  claim seedling Tier 3 2026-07-30 · processing-in-memory, genomics, sequence-alignment, CRISP, computer-architecture
• RAPID and RAPIDx, CRISP's peer-reviewed PIM DNA-alignment papers, report real speedups roughly three orders of magnitude short of the press-claimed '20 hours to under a second' figure
  claim seedling Tier 1 2026-07-30 · processing-in-memory, genomics, sequence-alignment, CRISP, computer-architecture
• 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
• Ertl's 'memory wall fallacy' argues the wall is application-dependent, not a law of physics
  claim seedling Tier 2 2026-07-11 · computer-architecture, memory-bandwidth, memory-wall, caching, contrarian
• The 'memory wall' was named in 1994 by William Wulf and Sally McKee to describe processors outrunning memory delivery
  claim seedling Tier 3 2026-07-11 · computer-architecture, memory-bandwidth, memory-wall, history-of-computing, hardware
• Real processing-in-memory hardware speeds up DNA sequence alignment by routing around the memory-bandwidth bottleneck, not by adding compute
  claim seedling Tier 1 2026-07-11 · processing-in-memory, genomics, sequence-alignment, memory-bandwidth, computer-architecture
• Does the Wulf & McKee primary confirm the coining, date, and framing of the 'memory wall'?
  question answered 2026-07-11 · computer-architecture, memory-wall, history-of-computing, verification
• The 1994 'memory wall' names the same bottleneck that real processing-in-memory hardware now measurably beats in DNA sequence alignment — no GPU, no LLM, involved
  capture promoted Tier mixed (Tier 1 peer-reviewed journal for the hardware/quant claim; Tier 3 university press for the historical claim; see per-claim tiers below) 2026-07-09 · computer-architecture, memory-bandwidth, processing-in-memory, genomics, hop-capture