{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:35JWV43D6RMPHUMEOQSOT7MRKL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"bc7f98b3309b0344bc42855303e3a7d310c979ec2db4f25bb6db8abbd1cf8d72","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ph","submitted_at":"2025-11-24T19:10:28Z","title_canon_sha256":"26f186367a28051939b96895b0382d8ae0a2f342667c71ee3847aa5f10db4404"},"schema_version":"1.0","source":{"id":"2511.19633","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.19633","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"2511.19633v3","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.19633","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"35JWV43D6RMP","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_16","alias_value":"35JWV43D6RMPHUME","created_at":"2026-05-20T00:05:37Z"},{"alias_kind":"pith_short_8","alias_value":"35JWV43D","created_at":"2026-05-20T00:05:37Z"}],"graph_snapshots":[{"event_id":"sha256:a0b1ac391250208fb0fd459a57f4d3fd2fdd8bf946048ce2f089e66bc7768b22","target":"graph","created_at":"2026-05-20T00:05:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"Using these programs, we simulate NLO Z production at the LHC and demonstrate that the speed and energy consumption of an NVIDIA V100 GPU are on par with a 96-core cluster composed of two Intel Xeon Gold 5220R Processors."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The GPU and CPU implementations produce numerically equivalent physics results for the NLO-matched showers, with no hidden differences in random number generation, phase-space sampling, or matching procedure that would affect observable distributions."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"GPU port of an NLO-matched parton shower achieves performance parity with a 96-core CPU cluster for LHC Z production simulations."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"A GPU-based parton shower matches the speed and energy use of a 96-core CPU cluster for NLO Z production at the LHC."}],"snapshot_sha256":"02b80ba2001c145fd9c76bc375924aafe47893a286527b52f5300e0ce3057d97"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2511.19633/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent developments have demonstrated the potential for high simulation speeds and reduced energy consumption by porting Monte Carlo Event Generators to GPUs. We release version 2 of the CUDA C++ parton shower event generator GAPS, which can simulate initial and final state emissions on a GPU and is capable of hard-process matching. As before, we accompany the generator with a near-identical C++ generator to run simulations on single-core and multi-core CPUs. Using these programs, we simulate NLO Z production at the LHC and demonstrate that the speed and energy consumption of an NVIDIA V100 GP","authors_text":"Michael H. Seymour, Siddharth Sule","cross_cats":[],"headline":"A GPU-based parton shower matches the speed and energy use of a 96-core CPU cluster for NLO Z production at the LHC.","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ph","submitted_at":"2025-11-24T19:10:28Z","title":"An NLO-Matched Initial and Final State Parton Shower on a GPU"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.19633","kind":"arxiv","version":3},"verdict":{"created_at":"2026-05-17T05:41:17.446479Z","id":"8188aba6-cd3a-4fa7-9815-271992a0fb45","model_set":{"reader":"grok-4.3"},"one_line_summary":"GPU port of an NLO-matched parton shower achieves performance parity with a 96-core CPU cluster for LHC Z production simulations.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"A GPU-based parton shower matches the speed and energy use of a 96-core CPU cluster for NLO Z production at the LHC.","strongest_claim":"Using these programs, we simulate NLO Z production at the LHC and demonstrate that the speed and energy consumption of an NVIDIA V100 GPU are on par with a 96-core cluster composed of two Intel Xeon Gold 5220R Processors.","weakest_assumption":"The GPU and CPU implementations produce numerically equivalent physics results for the NLO-matched showers, with no hidden differences in random number generation, phase-space sampling, or matching procedure that would affect observable distributions."}},"verdict_id":"8188aba6-cd3a-4fa7-9815-271992a0fb45"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:555b7b054c338a40e3fb2c5f2508e09759565d9bc019c95df3e770e6c8fbd94a","target":"record","created_at":"2026-05-20T00:05:37Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"bc7f98b3309b0344bc42855303e3a7d310c979ec2db4f25bb6db8abbd1cf8d72","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"hep-ph","submitted_at":"2025-11-24T19:10:28Z","title_canon_sha256":"26f186367a28051939b96895b0382d8ae0a2f342667c71ee3847aa5f10db4404"},"schema_version":"1.0","source":{"id":"2511.19633","kind":"arxiv","version":3}},"canonical_sha256":"df536af363f458f3d1847424e9fd9152faf739e8901255b31f0062733fc70a8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df536af363f458f3d1847424e9fd9152faf739e8901255b31f0062733fc70a8d","first_computed_at":"2026-05-20T00:05:37.978480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:05:37.978480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tdp5eC6LNFycSK2CXxkpX2euannoOKFdLK/8sdab7Dn7afZjHjjVwfIh683WScxP+VFqqqHXLtV3UPP53LwiAw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:05:37.979673Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.19633","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:555b7b054c338a40e3fb2c5f2508e09759565d9bc019c95df3e770e6c8fbd94a","sha256:a0b1ac391250208fb0fd459a57f4d3fd2fdd8bf946048ce2f089e66bc7768b22"],"state_sha256":"a7742d8c3d55ddb2bd6475e513e8b2c5605eb9460e7082bfbf990cbeeb2a2efd"}