Pith Number

pith:IQEK7U7T

pith:2020:IQEK7U7TIOI4P45CQPBFP4YVFU

not attested not anchored not stored refs pending

MPI Collectives for Multi-core Clusters: Optimized Performance of the Hybrid MPI+MPI Parallel Codes

Huan Zhou, Jose Gracia, Ralf Schneider

arxiv:2007.06892 v1 · 2020-07-14 · 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{IQEK7U7TIOI4P45CQPBFP4YVFU}

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	2026-07-05T01:18:24.353693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4408afd3f34391c7f3a283c257f3152d2e0b2d8bec9a92b79884b2cfe8be035d

Aliases

arxiv: 2007.06892 · arxiv_version: 2007.06892v1 · doi: 10.48550/arxiv.2007.06892 · pith_short_12: IQEK7U7TIOI4 · pith_short_16: IQEK7U7TIOI4P45C · pith_short_8: IQEK7U7T

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/IQEK7U7TIOI4P45CQPBFP4YVFU \
  | 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: 4408afd3f34391c7f3a283c257f3152d2e0b2d8bec9a92b79884b2cfe8be035d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db8acf4bfd484e7de30f191e6d21f74e383156abe2f7d754b28776cf46d8092a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2020-07-14T08:03:27Z",
    "title_canon_sha256": "175b2cc290047db7a23c7dc105b8449b94b3706a46c368516520d0a561a5b112"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.06892",
    "kind": "arxiv",
    "version": 1
  }
}