{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:3QNVIKPGKQXE4OHWUQRZOF3NEM","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":"7710299aa708ac22c348d30d83d6d9d77d1a2703c882fc9ff31dbe192b169f0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-01-21T17:51:44Z","title_canon_sha256":"a9e21712e8fba75a7d50499b6b2b3bfb3e4ab89e85db48cc6fb9c917af3ecd9a"},"schema_version":"1.0","source":{"id":"1601.05725","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05725","created_at":"2026-05-18T01:22:13Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05725v1","created_at":"2026-05-18T01:22:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05725","created_at":"2026-05-18T01:22:13Z"},{"alias_kind":"pith_short_12","alias_value":"3QNVIKPGKQXE","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3QNVIKPGKQXE4OHW","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3QNVIKPG","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:b7a4575309dc39e036e00ffaba8a3ee5735fb711ed612a0fdb06efda821cb452","target":"graph","created_at":"2026-05-18T01:22:13Z","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":"Scalable sparse LU factorization is critical for efficient numerical simulation of circuits and electrical power grids. In this work, we present a new scalable sparse direct solver called Basker. Basker introduces a new algorithm to parallelize the Gilbert-Peierls algorithm for sparse LU factorization. As architectures evolve, there exists a need for algorithms that are hierarchical in nature to match the hierarchy in thread teams, individual threads, and vector level parallelism. Basker is designed to map well to this hierarchy in architectures. There is also a need for data layouts to match ","authors_text":"Heidi K. Thornquist, Joshua Dennis Booth, Sivasankaran Rajamanickam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-01-21T17:51:44Z","title":"Basker: A Threaded Sparse LU Factorization Utilizing Hierarchical Parallelism and Data Layouts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05725","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:bf8a85317d90b141aa785ed46b27f8a11a843b7f5fd1f87fa4c426f56004b154","target":"record","created_at":"2026-05-18T01:22:13Z","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":"7710299aa708ac22c348d30d83d6d9d77d1a2703c882fc9ff31dbe192b169f0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2016-01-21T17:51:44Z","title_canon_sha256":"a9e21712e8fba75a7d50499b6b2b3bfb3e4ab89e85db48cc6fb9c917af3ecd9a"},"schema_version":"1.0","source":{"id":"1601.05725","kind":"arxiv","version":1}},"canonical_sha256":"dc1b5429e6542e4e38f6a42397176d231f8d74bbedd03a096dd51b62f3768e1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dc1b5429e6542e4e38f6a42397176d231f8d74bbedd03a096dd51b62f3768e1c","first_computed_at":"2026-05-18T01:22:13.126554Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:13.126554Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fGQjRh9gTQMrDxrTLE+w7jZOXZIABBhWPqSwOjwj3saVXWk5UN82KAoXZuD/9LhPzmXsFTCn5RApmf/MBqXtDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:13.127205Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.05725","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf8a85317d90b141aa785ed46b27f8a11a843b7f5fd1f87fa4c426f56004b154","sha256:b7a4575309dc39e036e00ffaba8a3ee5735fb711ed612a0fdb06efda821cb452"],"state_sha256":"ad1af5710489ed73452733b4623ac4085a171bc9a97294639672bcfe2bdc8f60"}