Pith Number

pith:3LCNAPOE

pith:2026:3LCNAPOENBX2YNEWXJF4KDAFAP

not attested not anchored not stored refs pending

Single-Thread JPEG Decoder Benchmarks Mis-Evaluate ML Data Loaders

Dmitry Kosarevsky, Vladimir Iglovikov

Single-thread JPEG decoder benchmarks produce different rankings than measurements inside PyTorch DataLoaders.

arxiv:2605.08731 v2 · 2026-05-09 · cs.PF · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

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\usepackage{pith}
\pithnumber{3LCNAPOENBX2YNEWXJF4KDAFAP}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

The evaluation protocol changes the supported conclusion. On Neoverse V2, imageio is ninth in single-thread throughput yet lands in the top DataLoader tier with torchvision; on Zen 4, torchvision rises from seventh single-thread to the top measured DataLoader tier.

C2weakest assumption

That the observed ranking changes are driven primarily by the single-thread versus multi-worker protocol rather than by unmeasured interactions between specific decoder implementations, memory hierarchy, or the exact PyTorch DataLoader configuration used.

C3one line summary

Single-thread JPEG decoder throughput rankings change substantially when measured inside PyTorch DataLoaders across Intel, AMD, and ARM CPUs.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-21T01:05:20.666655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dac4d03dc4686fac3496ba4bc50c0503dc0bc093f2536a053a579773f2e910bb

Aliases

arxiv: 2605.08731 · arxiv_version: 2605.08731v2 · doi: 10.48550/arxiv.2605.08731 · pith_short_12: 3LCNAPOENBX2 · pith_short_16: 3LCNAPOENBX2YNEW · pith_short_8: 3LCNAPOE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/3LCNAPOENBX2YNEWXJF4KDAFAP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: dac4d03dc4686fac3496ba4bc50c0503dc0bc093f2536a053a579773f2e910bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfcc0c5c828564c5913b69324cbb27b3a75362b5faba1f62c407c82cc0ddcb28",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PF",
    "submitted_at": "2026-05-09T06:34:17Z",
    "title_canon_sha256": "3964a7ee2c6aac594c3bdb69c1cba526b53084cdf6ed055a8076b4bc281afc9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.08731",
    "kind": "arxiv",
    "version": 2
  }
}