{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:266OYJT5YR5RSNM5JK23LXAMBT","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":"ccd33d92c01d4258653670f59fc035c1b7ac0c6e44ce3ad590d2473c2ce01293","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2025-09-19T08:14:14Z","title_canon_sha256":"2a69a4c3b237c22f363f429105bf1eefd7918f132b3901fdf360897965c0550d"},"schema_version":"1.0","source":{"id":"2509.15744","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.15744","created_at":"2026-07-07T02:19:40Z"},{"alias_kind":"arxiv_version","alias_value":"2509.15744v1","created_at":"2026-07-07T02:19:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.15744","created_at":"2026-07-07T02:19:40Z"},{"alias_kind":"pith_short_12","alias_value":"266OYJT5YR5R","created_at":"2026-07-07T02:19:40Z"},{"alias_kind":"pith_short_16","alias_value":"266OYJT5YR5RSNM5","created_at":"2026-07-07T02:19:40Z"},{"alias_kind":"pith_short_8","alias_value":"266OYJT5","created_at":"2026-07-07T02:19:40Z"}],"graph_snapshots":[{"event_id":"sha256:afc1d938136090abb79d64bcb922da7a2aefbff0d684e94b205bbf854f32efa9","target":"graph","created_at":"2026-07-07T02:19:40Z","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/2509.15744/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dynamic optimization is currently limited by sensitivity computations that require information from full forward and adjoint wave fields. Since the forward and adjoint solutions are computed in opposing time directions, the forward solution must be stored. This requires a substantial amount of memory for large-scale problems even when using check pointing or data compression techniques. As a result, the problem size is memory bound rather than bound by wall clock time, when working with modern GPU-based implementations that have limited memory capacity. To overcome this limitation, we introduc","authors_text":"L\\'aszl\\'o Kudela, Leon Herrmann, Stefan Kollmannsberger, Tim B\\\"urchner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2025-09-19T08:14:14Z","title":"A Memory Efficient Adjoint Method to Enable Billion Parameter Optimization on a Single GPU in Dynamic Problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.15744","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:d20c3785eaa20c0a37e9fdb5cbcf735b6502fe3c77842ffd713dd492b251e749","target":"record","created_at":"2026-07-07T02:19:40Z","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":"ccd33d92c01d4258653670f59fc035c1b7ac0c6e44ce3ad590d2473c2ce01293","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CE","submitted_at":"2025-09-19T08:14:14Z","title_canon_sha256":"2a69a4c3b237c22f363f429105bf1eefd7918f132b3901fdf360897965c0550d"},"schema_version":"1.0","source":{"id":"2509.15744","kind":"arxiv","version":1}},"canonical_sha256":"d7bcec267dc47b19359d4ab5b5dc0c0cf3031a0d8a73ed36730f730c8f86b277","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7bcec267dc47b19359d4ab5b5dc0c0cf3031a0d8a73ed36730f730c8f86b277","first_computed_at":"2026-07-07T02:19:40.801187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T02:19:40.801187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LP4nqf8dD9OizUHdzOcJtN9b/nq38Sf8O9Cuy6NffDe98GPJkYuwdL3BswllpcolqkDqQbzqif4VRZsIounMAg==","signature_status":"signed_v1","signed_at":"2026-07-07T02:19:40.802005Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.15744","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d20c3785eaa20c0a37e9fdb5cbcf735b6502fe3c77842ffd713dd492b251e749","sha256:afc1d938136090abb79d64bcb922da7a2aefbff0d684e94b205bbf854f32efa9"],"state_sha256":"efdc60025105e42ad8fe57d704d3d7e486432e0abe46d41640d7007ad6b862aa"}