{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:7SEE2QUI2L6GCGWHHYOMJTEEXH","short_pith_number":"pith:7SEE2QUI","canonical_record":{"source":{"id":"2505.01126","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-05-02T09:05:08Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"1b5f24fea86dbc98e56de72867beecc27231ad659aabf882f7f09d83f86cd4ed","abstract_canon_sha256":"167c9c49233cd3e7912e0d8c543a8fd7dd05b1132d57c981e3e099ed08308a87"},"schema_version":"1.0"},"canonical_sha256":"fc884d4288d2fc611ac73e1cc4cc84b9d63a5045d2c26346f9fc36364defd259","source":{"kind":"arxiv","id":"2505.01126","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01126","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01126v1","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01126","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_12","alias_value":"7SEE2QUI2L6G","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_16","alias_value":"7SEE2QUI2L6GCGWH","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_8","alias_value":"7SEE2QUI","created_at":"2026-07-05T10:57:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:7SEE2QUI2L6GCGWHHYOMJTEEXH","target":"record","payload":{"canonical_record":{"source":{"id":"2505.01126","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-05-02T09:05:08Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"1b5f24fea86dbc98e56de72867beecc27231ad659aabf882f7f09d83f86cd4ed","abstract_canon_sha256":"167c9c49233cd3e7912e0d8c543a8fd7dd05b1132d57c981e3e099ed08308a87"},"schema_version":"1.0"},"canonical_sha256":"fc884d4288d2fc611ac73e1cc4cc84b9d63a5045d2c26346f9fc36364defd259","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:57:45.722203Z","signature_b64":"T50FCJlLfU01EayH8CDcJUZFK+B+T6tFvw8eTN6qjNU6MI6qSs90+H0xKyNHRHwELtNEfPOukr/0pw14RsOaAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc884d4288d2fc611ac73e1cc4cc84b9d63a5045d2c26346f9fc36364defd259","last_reissued_at":"2026-07-05T10:57:45.721685Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:57:45.721685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.01126","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:57:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xuvYSLPA0n5fwdiCqIYmERDXvyN1+gKNnpnnF3h+Eh4IuoUxRd1R+6FMnCNzofoP5cII+NxiOPKAq3VpwJmMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T02:38:13.135537Z"},"content_sha256":"98440b6216fc192693d76d6c8a9cf72d3cb147e6609d5d75a2a3000d0ea4244f","schema_version":"1.0","event_id":"sha256:98440b6216fc192693d76d6c8a9cf72d3cb147e6609d5d75a2a3000d0ea4244f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:7SEE2QUI2L6GCGWHHYOMJTEEXH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"accLB: A High-Performance Lattice Boltzmann Code for Multiphase Turbulence on Multi-Gpu Architectures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.flu-dyn","authors_text":"Andrea Montessori, Aritra Mukherjee, Daulet Izbassarov, Luca Brandt, Marco Lauricella, Sauro Succi","submitted_at":"2025-05-02T09:05:08Z","abstract_excerpt":"In this work, we present accLB, a high-performance Fortran-based lattice Boltzmann (LB) solver tailored to multiphase turbulent flows on multi-GPU architectures. The code couples a conservative phase-field formulation of the Allen-Cahn equation with a thread-safe, regularized LB method to capture complex interface dynamics. Designed from the ground up for HPC environments, accLB employs MPI for distributed memory parallelism and OpenACC for GPU acceleration, achieving excellent portability and scalability on leading pre-exascale systems such as Leonardo and LUMI. Benchmark tests demonstrate st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01126","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.01126/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:57:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ceh7JBoTS5NmStTlGTJ3J7ZW9EeCtjpydgXmwfCjU/0/eD4M9xz3aFluFz5dezAawKwmHwIy43AIzgqjKF+0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T02:38:13.136092Z"},"content_sha256":"7a9329c29af7c2f86e0f910d6a8cdb746929d2da70101b63949457f8cf4e6dc3","schema_version":"1.0","event_id":"sha256:7a9329c29af7c2f86e0f910d6a8cdb746929d2da70101b63949457f8cf4e6dc3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/bundle.json","state_url":"https://pith.science/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-18T02:38:13Z","links":{"resolver":"https://pith.science/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH","bundle":"https://pith.science/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/bundle.json","state":"https://pith.science/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7SEE2QUI2L6GCGWHHYOMJTEEXH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7SEE2QUI2L6GCGWHHYOMJTEEXH","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":"167c9c49233cd3e7912e0d8c543a8fd7dd05b1132d57c981e3e099ed08308a87","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-05-02T09:05:08Z","title_canon_sha256":"1b5f24fea86dbc98e56de72867beecc27231ad659aabf882f7f09d83f86cd4ed"},"schema_version":"1.0","source":{"id":"2505.01126","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01126","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01126v1","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01126","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_12","alias_value":"7SEE2QUI2L6G","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_16","alias_value":"7SEE2QUI2L6GCGWH","created_at":"2026-07-05T10:57:45Z"},{"alias_kind":"pith_short_8","alias_value":"7SEE2QUI","created_at":"2026-07-05T10:57:45Z"}],"graph_snapshots":[{"event_id":"sha256:7a9329c29af7c2f86e0f910d6a8cdb746929d2da70101b63949457f8cf4e6dc3","target":"graph","created_at":"2026-07-05T10:57:45Z","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":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.01126/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work, we present accLB, a high-performance Fortran-based lattice Boltzmann (LB) solver tailored to multiphase turbulent flows on multi-GPU architectures. The code couples a conservative phase-field formulation of the Allen-Cahn equation with a thread-safe, regularized LB method to capture complex interface dynamics. Designed from the ground up for HPC environments, accLB employs MPI for distributed memory parallelism and OpenACC for GPU acceleration, achieving excellent portability and scalability on leading pre-exascale systems such as Leonardo and LUMI. Benchmark tests demonstrate st","authors_text":"Andrea Montessori, Aritra Mukherjee, Daulet Izbassarov, Luca Brandt, Marco Lauricella, Sauro Succi","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-05-02T09:05:08Z","title":"accLB: A High-Performance Lattice Boltzmann Code for Multiphase Turbulence on Multi-Gpu Architectures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01126","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:98440b6216fc192693d76d6c8a9cf72d3cb147e6609d5d75a2a3000d0ea4244f","target":"record","created_at":"2026-07-05T10:57:45Z","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":"167c9c49233cd3e7912e0d8c543a8fd7dd05b1132d57c981e3e099ed08308a87","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2025-05-02T09:05:08Z","title_canon_sha256":"1b5f24fea86dbc98e56de72867beecc27231ad659aabf882f7f09d83f86cd4ed"},"schema_version":"1.0","source":{"id":"2505.01126","kind":"arxiv","version":1}},"canonical_sha256":"fc884d4288d2fc611ac73e1cc4cc84b9d63a5045d2c26346f9fc36364defd259","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc884d4288d2fc611ac73e1cc4cc84b9d63a5045d2c26346f9fc36364defd259","first_computed_at":"2026-07-05T10:57:45.721685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:57:45.721685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T50FCJlLfU01EayH8CDcJUZFK+B+T6tFvw8eTN6qjNU6MI6qSs90+H0xKyNHRHwELtNEfPOukr/0pw14RsOaAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:57:45.722203Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.01126","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98440b6216fc192693d76d6c8a9cf72d3cb147e6609d5d75a2a3000d0ea4244f","sha256:7a9329c29af7c2f86e0f910d6a8cdb746929d2da70101b63949457f8cf4e6dc3"],"state_sha256":"0a1f05225e252ec217c75c17b7da45a34669e65c3176b410fecc3779480aab7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZOFPOLRGNlGB8CCfen7QA2GcQYvnHAGktXmN7Qs7nyiuQAr4vxxdrfAAb6PPVAWVNDtbREaI+LHdV+ykvrN5CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T02:38:13.320228Z","bundle_sha256":"2e946ffd740aa08f74ba1bc164a5368ad21f8d9be9901b8d3be6c5178c098c2c"}}