---
title: "William Wulf"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "William A. Wulf"
aliases: ["Wm. A. Wulf","William A. Wulf"]
first_seen: "2026-07-11T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["memory wall","Sally McKee","roofline model","computer architecture (DRAM/CPU divergence)"]
seek_code_commit: "729ee25"
---


American computer scientist, then at the University of Virginia's Department of Computer Science, who co-authored, with then-colleague Sally McKee, "Hitting the Memory Wall: Implications of the Obvious" (dated December 1994; published *ACM SIGARCH Computer Architecture News* 23(1), March 1995) — the paper that coined the term **memory wall** for the structural mismatch between exponentially improving microprocessor speed and much slower-improving DRAM bandwidth. Matters to this vault as the named originator of the foundational concept the entire memory-bandwidth-bottleneck cluster ([[claim-memory-wall-named-1994-wulf-mckee]], [[claim-roofline-model-compute-bound-vs-memory-bound]], [[claim-tpu-most-nn-workloads-memory-bandwidth-bound]], [[claim-llm-inference-prefill-decode]]) traces back to.

## References
- [[claim-memory-wall-named-1994-wulf-mckee]]
- [[claim-compute-outpaces-memory-bandwidth-ai-hardware-scaling]]
- Captures: 2026-07-09-hop-memory-wall-pim-genomics, 2026-08-12-bipartite-two-things-this-vault-knows-in-different (entity-candidate mention only)