paper: §2 platform deep-edit + §1 GQA framing + figure regen

§2 (KernBench Platform):
- Fix Table 2 HBM aggregate BW (1024 → 2048 GB/s); drop stale
  hbm_total_bw_gbs from topology.yaml (never read by sim_engine)
- Split PE_CPU / PE_SCHED fixed-cost row; disambiguate from the
  40-cycle command-dispatch FIXED term
- §2.2 two-pass: expand to describe Pass 1 timing and Pass 2 data
  data-correctness path
- §2.3 dispatch model: add motivation sentence for the
  descriptor-size linear form
- §2.4 Accuracy: reorder GEMM → All-reduce → Probe →
  Simplifications; drop FSIM aside (already covered by §4 Fig 5
  caption); soften 'every ns' → 'every modeled latency
  contribution'
- §2.5 HW config: add 64 TFLOP/s vs 2048 GB/s (~31 FLOP/byte)
  balance-point intuition and forward pointer to §5 GQA decode
- Fig 1 caption: separate illustrative topology from experimental
  configuration

§1: tighten GQA-as-primary-bandwidth-bottleneck framing.

Figures: regenerate SIP / CUBE architecture (SVG sources + PDF +
generator scripts).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-06-16 16:00:23 -07:00
parent 77eece81c4
commit 6b6e29968a
12 changed files with 869 additions and 95 deletions
+155
View File
@@ -0,0 +1,155 @@
"""Re-emit cube_view.svg in an academic (white-background, large-font)
palette and convert it to PDF for the 1H-codesign-paper Figure 2.
Source of truth: docs/diagrams/cube_view.svg (generated by
src/kernbench/topology/visualizer.py:_render_cube_view_svg, dark theme).
This script does a targeted color/font/size remap on the dark palette so
the resulting figure prints well on a white paper page. If the upstream
palette or geometry in visualizer.py changes, the maps below must be
reviewed.
"""
from __future__ import annotations
import re
import shutil
import subprocess
from pathlib import Path
REPO = Path(__file__).resolve().parents[2]
SRC_SVG = REPO / "docs" / "diagrams" / "cube_view.svg"
OUT_DIR = REPO / "docs" / "report" / "1H-codesign-paper" / "figures"
OUT_SVG = OUT_DIR / "cube_architecture.svg"
OUT_PDF = OUT_DIR / "cube_architecture.pdf"
# ── 1. Legend-icon safety: legend rects whose general color rule below
# would turn them white-on-white. Apply BEFORE the wholesale fill rules.
LEGEND_FIXUP: list[tuple[str, str]] = [
# "Relay" legend icon (slate-700 router)
('fill="#334155" stroke="#475569" stroke-width="0.5"',
'fill="#94a3b8" stroke="#475569" stroke-width="0.5"'),
# "Mesh Link" legend icon (slate-600)
('fill="#475569" stroke="#475569" stroke-width="0.5"',
'fill="#94a3b8" stroke="#475569" stroke-width="0.5"'),
]
# ── 2. Color remap: dark theme -> academic (white) theme
COLOR_MAP: list[tuple[str, str]] = [
# page background slate-900 -> white
('fill="#0f172a"', 'fill="#ffffff"'),
# title text slate-400 -> slate-800
('fill="#94a3b8"', 'fill="#1f2937"'),
# subtitle text slate-500 -> slate-600
('fill="#64748b"', 'fill="#475569"'),
# router has-attach stroke slate-500 -> slate-600
('stroke="#64748b"', 'stroke="#475569"'),
# router has-attach fill slate-600 -> white
('fill="#475569"', 'fill="#ffffff"'),
# mesh lines + cube boundary stroke slate-600 -> slate-400
('stroke="#475569"', 'stroke="#94a3b8"'),
# router no-attach fill slate-700 -> white
('fill="#334155"', 'fill="#ffffff"'),
# component block dark fills -> white (PE / M_CPU / SRAM / UCIe)
('fill="#2d1f3d"', 'fill="#ffffff"'),
('fill="#451a03"', 'fill="#ffffff"'),
('fill="#1c1917"', 'fill="#ffffff"'),
('fill="#1e1b4b"', 'fill="#ffffff"'),
# HBM zone background emerald-950 -> emerald-50
('fill="#052e16"', 'fill="#ecfdf5"'),
# router label text white -> slate-800
('fill="white"', 'fill="#1f2937"'),
# boost low-alpha emerald annotations so PE/HBM BW labels read on light bg
('fill="#10b98188"', 'fill="#047857"'),
('fill="#05966988"', 'fill="#059669"'),
]
# ── 3. UCIe palette desaturation: bright violet/indigo/fuchsia is too
# attention-grabbing on a white page; remap to a slate gradient.
# NOTE: side-effect on PE2/PE3 HBM port-bar colors (which share
# #8b5cf6/#a78bfa with UCIe) — PE labels still convey identity.
# Applied AFTER the academic color map so the new slate values are
# not picked up by the rules above.
UCIE_DESATURATE: list[tuple[str, str]] = [
# UCIe block stroke/text (violet-500) -> slate-600
('"#8b5cf6"', '"#475569"'),
# UCIe cell 1 / PE3 port bar (violet-400) -> slate-400
('"#a78bfa"', '"#94a3b8"'),
# UCIe cell 0 (indigo-400) -> slate-300
('"#818cf8"', '"#cbd5e1"'),
# UCIe cell 2 (purple-400) -> slate-500
('"#c084fc"', '"#64748b"'),
# UCIe cell 3 (fuchsia-400) -> gray-700
('"#e879f9"', '"#374151"'),
]
# ── 4. Font-size bumps. The CUBE figure is rendered at half-text-width
# (~250pt) inside the side-by-side subfigure in 02-platform.tex, so
# native fonts get crushed ~3x by \linewidth scaling. We push the
# bumps to the legibility limit of the layout (router-label text
# stays inside a slightly enlarged circle; legend items may touch).
FONT_MAP: dict[str, str] = {
"5": "10",
"6": "12",
"7": "14",
"8": "13", # legend rect text — capped by upstream layout spacing
# (advance = 7*len(label)+24 was sized for ~font 8);
# font 13 keeps each item's text inside its slot.
"9": "14",
"10": "15",
"11": "16",
"14": "18", # title — kept moderate so it does not overflow canvas
}
# ── 5. Router circle radius bump (only circles use r="8"). Enlarged so
# the bumped router labels stay inside the circle.
RADIUS_MAP: list[tuple[str, str]] = [
(' r="8"', ' r="17"'),
]
# ── 6. Tighten whitespace: move legend just below dashed box and crop
# the unused canvas margins so LaTeX's \linewidth scaling does not
# shrink the figure text any more than necessary.
LAYOUT_FIXUP: list[tuple[str, str]] = [
# Move legend rects up (dashed box bottom is at y=760)
(' y="865"', ' y="775"'),
# Move legend text baselines up to match (offset = 9 px)
(' y="874"', ' y="784"'),
# Tight crop: 5 px margin around dashed box + cut top/bottom whitespace
('<svg xmlns="http://www.w3.org/2000/svg" width="970" height="900" '
'viewBox="0 0 970 900">',
'<svg xmlns="http://www.w3.org/2000/svg" width="860" height="798" '
'viewBox="55 2 860 798">'),
]
def _bump_font(m: re.Match) -> str:
return f'font-size="{FONT_MAP.get(m.group(1), m.group(1))}"'
def main() -> None:
if not SRC_SVG.exists():
raise SystemExit(f"source SVG missing: {SRC_SVG}")
rsvg = shutil.which("rsvg-convert")
if rsvg is None:
raise SystemExit("rsvg-convert not found (brew install librsvg)")
svg = SRC_SVG.read_text(encoding="utf-8")
for old, new in (LEGEND_FIXUP + COLOR_MAP + UCIE_DESATURATE
+ RADIUS_MAP + LAYOUT_FIXUP):
if old not in svg:
print(f"warn: pattern not present in source SVG: {old}")
svg = svg.replace(old, new)
svg = re.sub(r'font-size="(\d+)"', _bump_font, svg)
OUT_DIR.mkdir(parents=True, exist_ok=True)
OUT_SVG.write_text(svg, encoding="utf-8")
subprocess.run(
[rsvg, "-f", "pdf", "-o", str(OUT_PDF), str(OUT_SVG)],
check=True,
)
print(f"wrote {OUT_SVG.relative_to(REPO)}")
print(f"wrote {OUT_PDF.relative_to(REPO)}")
if __name__ == "__main__":
main()