{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GH5MABSRJFBV36H22F6DOI2MA2","short_pith_number":"pith:GH5MABSR","canonical_record":{"source":{"id":"1701.01608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-01-06T12:09:27Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"4346b667dea73c5e0f0fb1c0a75c281d5b94454f19603f7f59d748dbb4ee8279","abstract_canon_sha256":"1848b58500d3b4d7ac61901bb3d15085504574e60050a70a24dbf59e6918ec7c"},"schema_version":"1.0"},"canonical_sha256":"31fac0065149435df8fad17c37234c06b1da553fec3f974d1dd7ea684258c63e","source":{"kind":"arxiv","id":"1701.01608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01608","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01608v1","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01608","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"GH5MABSRJFBV","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GH5MABSRJFBV36H2","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GH5MABSR","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GH5MABSRJFBV36H22F6DOI2MA2","target":"record","payload":{"canonical_record":{"source":{"id":"1701.01608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-01-06T12:09:27Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"4346b667dea73c5e0f0fb1c0a75c281d5b94454f19603f7f59d748dbb4ee8279","abstract_canon_sha256":"1848b58500d3b4d7ac61901bb3d15085504574e60050a70a24dbf59e6918ec7c"},"schema_version":"1.0"},"canonical_sha256":"31fac0065149435df8fad17c37234c06b1da553fec3f974d1dd7ea684258c63e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:16.431171Z","signature_b64":"w01Z9D/dgpLf/lyvlGlOu9rzKVgdStQPF4yZJsnX/9H+/hiLFA92gM/cYC1nwNmn4mwd9+j9WVlcfn5wvoBsBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31fac0065149435df8fad17c37234c06b1da553fec3f974d1dd7ea684258c63e","last_reissued_at":"2026-05-18T00:53:16.430791Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:16.430791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.01608","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":"2026-05-18T00:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U1iz8+LluCZoQPKhaOSdddw/BO4E3UaNZpvdKRO/xliQOTaN6MKZTyWI4ch+r8QDlFIBQzX8lVq+gS27Mg74BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:15:28.324472Z"},"content_sha256":"1cf5518fbd8e1f40694465dc6d4c7e7727a20c596f1e0643cbf0c00b3ff21f71","schema_version":"1.0","event_id":"sha256:1cf5518fbd8e1f40694465dc6d4c7e7727a20c596f1e0643cbf0c00b3ff21f71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GH5MABSRJFBV36H22F6DOI2MA2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast Kinetic Scheme : efficient MPI parallelization strategy for 3D Boltzmann equation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"math.NA","authors_text":"Jacek Narski","submitted_at":"2017-01-06T12:09:27Z","abstract_excerpt":"In this paper we present a parallelization strategy on distributed memory systems for the Fast Kinetic Scheme --- a semi-Lagrangian scheme developed in [J. Comput. Phys., Vol. 255, 2013, pp 680-698] for solving kinetic equations. The original algorithm was proposed for the BGK approximation of the collision kernel. In this work we deal with its extension to the full Boltzmann equation in six dimensions, where the collision operator is resolved by means of fast spectral method. We present close to ideal scalability of the proposed algorithm on tera- and peta-scale systems."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01608","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":""},"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":"2026-05-18T00:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2yeFZh5Yz3QF/NgKFC64I4MbkABTLc31vuykELKschq5cI4BBtJlV8cKlAP1A3vkVWm4bFVQeybU+3Pt1Jp7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T05:15:28.324821Z"},"content_sha256":"8740dd1609c8e1817972315e9f0041f011601e7d345419bdb75d4a06d69c281c","schema_version":"1.0","event_id":"sha256:8740dd1609c8e1817972315e9f0041f011601e7d345419bdb75d4a06d69c281c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GH5MABSRJFBV36H22F6DOI2MA2/bundle.json","state_url":"https://pith.science/pith/GH5MABSRJFBV36H22F6DOI2MA2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GH5MABSRJFBV36H22F6DOI2MA2/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":"2026-06-04T05:15:28Z","links":{"resolver":"https://pith.science/pith/GH5MABSRJFBV36H22F6DOI2MA2","bundle":"https://pith.science/pith/GH5MABSRJFBV36H22F6DOI2MA2/bundle.json","state":"https://pith.science/pith/GH5MABSRJFBV36H22F6DOI2MA2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GH5MABSRJFBV36H22F6DOI2MA2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GH5MABSRJFBV36H22F6DOI2MA2","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":"1848b58500d3b4d7ac61901bb3d15085504574e60050a70a24dbf59e6918ec7c","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-01-06T12:09:27Z","title_canon_sha256":"4346b667dea73c5e0f0fb1c0a75c281d5b94454f19603f7f59d748dbb4ee8279"},"schema_version":"1.0","source":{"id":"1701.01608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01608","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01608v1","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01608","created_at":"2026-05-18T00:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"GH5MABSRJFBV","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GH5MABSRJFBV36H2","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GH5MABSR","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:8740dd1609c8e1817972315e9f0041f011601e7d345419bdb75d4a06d69c281c","target":"graph","created_at":"2026-05-18T00:53:16Z","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"},"paper":{"abstract_excerpt":"In this paper we present a parallelization strategy on distributed memory systems for the Fast Kinetic Scheme --- a semi-Lagrangian scheme developed in [J. Comput. Phys., Vol. 255, 2013, pp 680-698] for solving kinetic equations. The original algorithm was proposed for the BGK approximation of the collision kernel. In this work we deal with its extension to the full Boltzmann equation in six dimensions, where the collision operator is resolved by means of fast spectral method. We present close to ideal scalability of the proposed algorithm on tera- and peta-scale systems.","authors_text":"Jacek Narski","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-01-06T12:09:27Z","title":"Fast Kinetic Scheme : efficient MPI parallelization strategy for 3D Boltzmann equation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01608","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":"sha256:1cf5518fbd8e1f40694465dc6d4c7e7727a20c596f1e0643cbf0c00b3ff21f71","target":"record","created_at":"2026-05-18T00:53:16Z","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":"1848b58500d3b4d7ac61901bb3d15085504574e60050a70a24dbf59e6918ec7c","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-01-06T12:09:27Z","title_canon_sha256":"4346b667dea73c5e0f0fb1c0a75c281d5b94454f19603f7f59d748dbb4ee8279"},"schema_version":"1.0","source":{"id":"1701.01608","kind":"arxiv","version":1}},"canonical_sha256":"31fac0065149435df8fad17c37234c06b1da553fec3f974d1dd7ea684258c63e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31fac0065149435df8fad17c37234c06b1da553fec3f974d1dd7ea684258c63e","first_computed_at":"2026-05-18T00:53:16.430791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:16.430791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w01Z9D/dgpLf/lyvlGlOu9rzKVgdStQPF4yZJsnX/9H+/hiLFA92gM/cYC1nwNmn4mwd9+j9WVlcfn5wvoBsBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:16.431171Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1cf5518fbd8e1f40694465dc6d4c7e7727a20c596f1e0643cbf0c00b3ff21f71","sha256:8740dd1609c8e1817972315e9f0041f011601e7d345419bdb75d4a06d69c281c"],"state_sha256":"9a403e8f8d9708cb3a67185b4ea083aaa24f96ccc1513cfdbfd6d0c6ea8da20c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+q2SNCWLl1UxXnPm++xpM4iqD1614cyxZgVcRKuARYdkdD9pcpf9iB1cn/peDwVr9rKdCbw7bOMVIYZKzZXBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T05:15:28.326757Z","bundle_sha256":"58939d805d2cc8a92ca2877242fa4e84ac603e5fa3d207a70f3931a2350b47d7"}}