Pith Number

pith:RORIPAVZ

pith:2026:RORIPAVZPRNZKUERGP57367Y3M

not attested not anchored not stored refs pending

KubePACS: Kubernetes Cluster Using Performant, Highly Available, and Cost Efficient Spot Instances

Enrique Molina-Gim\'enez, Kyumin Kim, Kyungyong Lee, Pedro Garc\'ia-L\'opez, Taeyoon Kim

KubePACS picks Kubernetes spot instances by jointly optimizing real-time prices, workload performance benchmarks, and multi-node availability scores.

arxiv:2604.24027 v2 · 2026-04-27 · cs.DC

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\usepackage{pith}
\pithnumber{RORIPAVZPRNZKUERGP57367Y3M}

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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

KubePACS demonstrates on average 55.09% and up to 81.06% higher performance per dollar over state-of-the-art solutions such as Karpenter, SpotVerse, and SpotKube, which only reference the spot instance prices and limited availability data.

C2weakest assumption

That real-time spot prices, performance benchmarks, and multi-node Spot Placement Scores remain accurate predictors of long-term cost, speed, and availability for the target workloads once instances are provisioned.

C3one line summary

KubePACS formulates spot instance selection as a multi-objective ILP problem solved with GSS, integrated with Karpenter, and reports 55% average higher performance per dollar than prior tools.

Receipt and verification

First computed	2026-06-05T01:15:24.711973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ba28782b97c5b95509133fbfdfbf8db01fe9c30cadf1ad3e5e52dad78de4686

Aliases

arxiv: 2604.24027 · arxiv_version: 2604.24027v2 · doi: 10.48550/arxiv.2604.24027 · pith_short_12: RORIPAVZPRNZ · pith_short_16: RORIPAVZPRNZKUER · pith_short_8: RORIPAVZ

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/RORIPAVZPRNZKUERGP57367Y3M \
  | 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: 8ba28782b97c5b95509133fbfdfbf8db01fe9c30cadf1ad3e5e52dad78de4686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f6acdc567beac3a544a71fcfe68db01dae89b1c4476c2a2a1b0b7fe5d2272c8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2026-04-27T04:28:24Z",
    "title_canon_sha256": "2e599ef27f0403517ed30f8bc1e59b5334c7ec945c377a2f1a6a01ef2969028e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.24027",
    "kind": "arxiv",
    "version": 2
  }
}