Pith Number

pith:C2G7D2GQ

pith:2017:C2G7D2GQTQC7KZEFZYLSXXM2XZ

not attested not anchored not stored refs pending

Tuning MPI Collectives by Verifying Performance Guidelines

Alexandra Carpen-Amarie, Sascha Hunold

arxiv:1707.09965 v2 · 2017-07-31 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C2G7D2GQTQC7KZEFZYLSXXM2XZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-18T00:38:17.710296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

168df1e8d09c05f56485ce172bdd9abe60b89c8a6fba141e2faf09d881d9dfe3

Aliases

arxiv: 1707.09965 · arxiv_version: 1707.09965v2 · doi: 10.48550/arxiv.1707.09965 · pith_short_12: C2G7D2GQTQC7 · pith_short_16: C2G7D2GQTQC7KZEF · pith_short_8: C2G7D2GQ

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/C2G7D2GQTQC7KZEFZYLSXXM2XZ \
  | 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: 168df1e8d09c05f56485ce172bdd9abe60b89c8a6fba141e2faf09d881d9dfe3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bb7426d400aa96994c95a3c56f4f82bf824c0fdb1adfb7dd58ef2e9a63d20e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2017-07-31T17:19:09Z",
    "title_canon_sha256": "f7d3e8006d841fb262f5ce87e883a789ed96c2e9b4e6029539de20afac756130"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09965",
    "kind": "arxiv",
    "version": 2
  }
}