Y

Yaroslav Bulatov

@yaroslavvb

38 public spaces

  1. The Unfolding Cut an orbifold any way you like and copies of the piece tile the plane: a pillow, a fish, and what each cut does to the symmetry. Updated Nov 6
  2. 17 groups using magic theorem Conway's price list for the 17 wallpaper groups, each row with its orbifold as a 3D surface and a link to its correspondence page. Updated Nov 5
  3. How to find a time-symmetric animation Mirror of the animated-groups tutorial: the five-step search that found the r3₂∗3 Brusselator spiral loop, with its generators drawn on the film. Updated Nov 2
  4. magic-theorem-showcase The 17 wallpaper groups as spinning 3D orbifolds; hover or tap one to see its unrolled pattern with every rotation, mirror and glide, and its generators marked. Updated Nov 2
  5. Anatomy of a memory access, interactively Each level of the ET-SoC-1's memory system, from the chip down to the transistors: L1, L2, L3, scratchpad and LPDDR4X DRAM, with measured cycles and energy and what is still asked Updated Nov 2
  6. The ET-SoC-1, interactively Esperanto's ET-SoC-1 as a clickable, animated schematic: twelve data flows, measured on three cards (TensorFMA32 simulated from the design), an 18-slide tour, and a zoom from the rack to the quarks. Updated Nov 2
  7. ∗632: build the three mirrors from two generators An exercise: click the sixth-turn α and the mirror R until your copy matches the target mirror P, Q or R of ∗632. Updated Nov 1
  8. binance-hack What happened in the recent Binance hack: an interactive explainer with collapsible technical deep-dives and illustrations. Updated Oct 31
  9. Cribbage Club at the Bernal Heights Library Cribbage Club at the Bernal Heights Library Updated Oct 29
  10. anatomy-of-high-performance-matmul Goto & van de Geijn (2008) as 26 interactive slides: GEMM shapes, GEBP, packing, L2 and TLB blocking, the paper's plots redrawn, and a benchmark you can run. Updated Oct 25
  11. How the loop gate works Interactive tutorial: how the looped model's gate β = σ(W_β s̃ + b_β) ⊙ softplus(γ) blends the old and new state, and why it matters at one loop Updated Oct 22
  12. 1. Title · Don't Drop Dropout · Gradient dissent Interactive slides on Don Updated Oct 22
  13. small-models-showdown 21 small open-model configurations, Dory at 1, 2 and 4 loops among them, on ten benchmarks in one vLLM harness Updated Oct 21
  14. Looped Models Slides 17 slides for Gradient Dissent, Thu 22 Oct 2026: NVIDIA's Elastic Latent Recurrence, Koi-4B, and Dory1.0-4B re-measured Updated Oct 20
  15. Watching heat flow through the M5 keyboard Heat from the CPU, GPU, performance and efficiency cores, filmed with the Thermal Master P3: which way it flows, how fast, and how to pull it out of the noise Updated Oct 16
  16. Inside the silicon · four interactive 3D views Rotate metal wiring, separate a FinFET, explore silicon fins, and control channel conduction in four interactive 3D teaching models. Updated Oct 15
  17. The Horace experiment · ET-SoC-1 Same matmul, same 9.2 TFLOPS, different watts: 38.29 W on zeros, 46.73 on ones and 63.40 on random values (aifoundry2), predicted from RTL switching counts to 0.5 W rms. Updated Oct 14
  18. Limits of observability · ET-SoC-1 reports hub What can be observed on the ET-SoC-1 at every granularity, from board power every 133 ms to a flip-flop per cycle in the open RTL, and what could be made observable. Updated Oct 14
  19. Two weeks with the ET-SoC-1: the session timeline Seventeen days on the AI Foundry lab's machine, 19 Sep to 5 Oct 2026: the owner's messages with their own words, every Claude session in a lane of its own, the agents and their tokens, the four cards and the hosts down, and every page deployed, on one zoomable time axis. Updated Oct 6
  20. Working on: Deploy Showcase to spacesheep Live status of deploying the animated-groups Showcase section to spacesheep.dev Updated Sep 29
  21. Matmul efficiency · ET-SoC-1 ET-SoC-1 lab card: hello world, then tensor-unit matmul speed and energy efficiency vs the A100 Updated Sep 29
  22. Memory hierarchy · ET-SoC-1 ET-SoC-1 memory hierarchy measured on a lab card (latency, bandwidth, capacity, energy per level) next to published A100 numbers Updated Sep 29
  23. Anatomy of a memory access · ET-SoC-1 One ET-SoC-1 memory access taken apart: latency by stage to ±3 cycles, energy per load by power rail, measured on a lab card. Updated Sep 29
  24. Eggplant + Carrot: Recipes from Around the World 24 researched recipes: 19 pairing eggplant and carrot across 13 culinary traditions, plus 5 pumpkin dishes — times, methods, sources. Updated Sep 27
  25. techno-apocalypse-show-me-the-data Data companion to Ben Landau-Taylor's Palladium lecture: every techno-apocalypse claim checked against sources, with charts. Updated Sep 25
  26. Brain vs H100: the physical ledger Transistors vs neurons, switches vs spikes, joules and bits vs metres: where the brain's efficiency over an H100 actually comes from, with sources and ranges Updated Sep 24
  27. Animated Groups: Wallpaper Symmetry Showcase Interactive showcase of all 17 wallpaper groups, reaction-diffusion catalogs, correspondence pages, and the Scott-Gray group explorer. Updated Sep 23
  28. sutro-32-public Sutro group #32 (21 Sep 2026): oscillator computing, how such a system is actually trained and physically tuned, the energy claims checked, and the competition's state. Updated Sep 22
  29. Naveen Rao's energy heuristics, checked 17 energy heuristics from Naveen Rao's All-In Summit talk, each with a rerunnable derivation, sources and a verdict, plus cost-of-electricity and cost-of-compute rules of thumb for GPUs. Updated Sep 21
  30. Showcase Every precomputed animation of Spacetime Groups on one page, grouped by wallpaper group and running: reaction–diffusion fields, three-colour entangled colourings, two-colour spacetime pictures and the Updated Sep 20
  31. Trefoil Three colours whose swaps need a turn, a wait and a swap all at once Updated Sep 19
  32. Weave Monochrome A verified Gray-Scott woven rotating wave in black and white: a twill that turns once per period, and whose two colours are exchanged by a half-cell slide, a half turn, or half a period. Updated Sep 19
  33. A100 numbers to know Latency, energy and capacity per A100 memory level, measured pJ per multiply-add, MNIST sizing, nine kernel rules, and a 57-card flashcard deck. Updated Sep 18
  34. Triskele Three colours that turn in step: a third of a turn cycles them, a third of a period cycles them, and doing both changes nothing. Updated Sep 18
  35. Gyre A verified Gray–Scott rotating wave on a triangular lattice in three colours, with an entangled colour symmetry: turn it a third of a turn, wait a third of a period and step every colour back one plac Updated Sep 18
  36. Plume An endless ember-coloured rotating wave: a verified Gray–Scott pattern rendered live in WebGL. Drag it, pinch it, turn it. Updated Sep 17
  37. ainekko-history Ainekko chronology for Thomas Ahle and Mitchell Nahmias: people, silicon, roadmap Updated Sep 16
  38. Energy Learning Sprint — 14 Sep 2026 Test deploy of the 14 Sep 2026 energy/learning sprint report Updated Sep 14

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