~/talk

Custom chips needed for efficient high-performance computing

Talkat DSC Europe 23 · 2023-11-20..11-24
links:none on file
slides:none on file

Argues that single‑thread gains are exhausted and custom silicon is the practical path for latency‑sensitive, energy‑bound workloads, backing it with analysis of ~8 million HPC jobs and the claim that energy and cooling drive ~70% of supercomputer lifetime cost. Proposes adaptive CPUs that reconfigure microarchitecture at runtime to save energy and extend scaling by roughly a decade, contrasts them with domain accelerators that can yield up to 1000x improvements using techniques like processing‑in‑memory and deployment via cloud FPGAs. Also notes modern tapeouts cost about $1B and offers a software→hardware flow to extract hot 50‑line kernels.

AI-written summary · about

  1. 0:00Custom chips for HPC
  2. 1:29CPU scaling limits
  3. 3:14Power and dark silicon
  4. 5:00Single-threaded performance end
  5. 6:29Multicore energy limits
  6. 7:32Adaptive computing
  7. 10:17Hardware introspection
  8. 12:06Debugging supercomputer bottlenecks
  9. 13:50Microarchitectural noise
  10. 14:11Custom chips vs adaptive CPUs
  11. 15:37Transistor placement in CPUs
  12. 16:21Chip development cost
  13. 17:24Chip design for software engineers
  14. 19:33Call to action for HPC
  15. 20:15Q&A
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