{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PDNZP45PQDRT26XBX7GBJ5BNRJ","short_pith_number":"pith:PDNZP45P","canonical_record":{"source":{"id":"2009.12623","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-09-26T15:38:02Z","cross_cats_sorted":["cs.NA","math.NA"],"title_canon_sha256":"5d8961dd8960e1084a1e140fd3d0fac707f837dc5270c7f6ccad1ac5bdbe4e09","abstract_canon_sha256":"7f4e59045e817fd1de54470bf2481b0f2151aa95619c04eab6f4f75badac2301"},"schema_version":"1.0"},"canonical_sha256":"78db97f3af80e33d7ae1bfcc14f42d8a78e1cfe415c73c76d117c27aedb77f2e","source":{"kind":"arxiv","id":"2009.12623","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.12623","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"2009.12623v2","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.12623","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"PDNZP45PQDRT","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_16","alias_value":"PDNZP45PQDRT26XB","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_8","alias_value":"PDNZP45P","created_at":"2026-07-05T03:14:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PDNZP45PQDRT26XBX7GBJ5BNRJ","target":"record","payload":{"canonical_record":{"source":{"id":"2009.12623","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-09-26T15:38:02Z","cross_cats_sorted":["cs.NA","math.NA"],"title_canon_sha256":"5d8961dd8960e1084a1e140fd3d0fac707f837dc5270c7f6ccad1ac5bdbe4e09","abstract_canon_sha256":"7f4e59045e817fd1de54470bf2481b0f2151aa95619c04eab6f4f75badac2301"},"schema_version":"1.0"},"canonical_sha256":"78db97f3af80e33d7ae1bfcc14f42d8a78e1cfe415c73c76d117c27aedb77f2e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:14:45.200568Z","signature_b64":"Q+bO+0oI9ZxKixMrN/FuVyvc/qFlUKOHQr9WEYc9uC9+Fq35Vrx51B0SMZAccY7AVbVFifpiJZU2OMehP50yBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78db97f3af80e33d7ae1bfcc14f42d8a78e1cfe415c73c76d117c27aedb77f2e","last_reissued_at":"2026-07-05T03:14:45.200081Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:14:45.200081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.12623","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r/pIf9CxVWw6GXBzf3JbtPjYB3PGj19PNm9IJp3jkPFoNSeFZ+FT1e4eB010gxfH4S4TCcxbnBwkGFUWdebmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:59:21.989109Z"},"content_sha256":"444cdcd70bcda9b55aa0600ee87861dda418484c7fdeaf3a4af4da8fd57a8c65","schema_version":"1.0","event_id":"sha256:444cdcd70bcda9b55aa0600ee87861dda418484c7fdeaf3a4af4da8fd57a8c65"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PDNZP45PQDRT26XBX7GBJ5BNRJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lossy Checkpoint Compression in Full Waveform Inversion: a case study with ZFPv0.5.5 and the Overthrust Model","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.NA","math.NA"],"primary_cat":"physics.comp-ph","authors_text":"Gerard J. Gorman, Jan Hueckelheim, John Washbourne, Mathias Louboutin, Navjot Kukreja, Paul H.J. Kelly","submitted_at":"2020-09-26T15:38:02Z","abstract_excerpt":"This paper proposes a new method that combines check-pointing methods with error-controlled lossy compression for large-scale high-performance Full-Waveform Inversion (FWI), an inverse problem commonly used in geophysical exploration. This combination can significantly reduce data movement, allowing a reduction in run time as well as peak memory. In the Exascale computing era, frequent data transfer (e.g., memory bandwidth, PCIe bandwidth for GPUs, or network) is the performance bottleneck rather than the peak FLOPS of the processing unit. Like many other adjoint-based optimization problems, F"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.12623","kind":"arxiv","version":2},"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/2009.12623/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":"2026-07-05T03:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YFRPvoh/G66sj7ihwgPWkz5N+KJjLKVb2agHOHWeRBHalCuMqC8RJiA6ydmPTZoU9cFQIETljOB3/eXSPjAZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:59:21.989885Z"},"content_sha256":"a418c8207245735a32ea549d671c5665e14d0b66df89680f21b831bdfbad23b9","schema_version":"1.0","event_id":"sha256:a418c8207245735a32ea549d671c5665e14d0b66df89680f21b831bdfbad23b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/bundle.json","state_url":"https://pith.science/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/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":"2026-08-15T14:59:21Z","links":{"resolver":"https://pith.science/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ","bundle":"https://pith.science/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/bundle.json","state":"https://pith.science/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PDNZP45PQDRT26XBX7GBJ5BNRJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PDNZP45PQDRT26XBX7GBJ5BNRJ","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":"7f4e59045e817fd1de54470bf2481b0f2151aa95619c04eab6f4f75badac2301","cross_cats_sorted":["cs.NA","math.NA"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-09-26T15:38:02Z","title_canon_sha256":"5d8961dd8960e1084a1e140fd3d0fac707f837dc5270c7f6ccad1ac5bdbe4e09"},"schema_version":"1.0","source":{"id":"2009.12623","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.12623","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"2009.12623v2","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.12623","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"PDNZP45PQDRT","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_16","alias_value":"PDNZP45PQDRT26XB","created_at":"2026-07-05T03:14:45Z"},{"alias_kind":"pith_short_8","alias_value":"PDNZP45P","created_at":"2026-07-05T03:14:45Z"}],"graph_snapshots":[{"event_id":"sha256:a418c8207245735a32ea549d671c5665e14d0b66df89680f21b831bdfbad23b9","target":"graph","created_at":"2026-07-05T03:14:45Z","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/2009.12623/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper proposes a new method that combines check-pointing methods with error-controlled lossy compression for large-scale high-performance Full-Waveform Inversion (FWI), an inverse problem commonly used in geophysical exploration. This combination can significantly reduce data movement, allowing a reduction in run time as well as peak memory. In the Exascale computing era, frequent data transfer (e.g., memory bandwidth, PCIe bandwidth for GPUs, or network) is the performance bottleneck rather than the peak FLOPS of the processing unit. Like many other adjoint-based optimization problems, F","authors_text":"Gerard J. Gorman, Jan Hueckelheim, John Washbourne, Mathias Louboutin, Navjot Kukreja, Paul H.J. Kelly","cross_cats":["cs.NA","math.NA"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-09-26T15:38:02Z","title":"Lossy Checkpoint Compression in Full Waveform Inversion: a case study with ZFPv0.5.5 and the Overthrust Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.12623","kind":"arxiv","version":2},"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":"sha256:444cdcd70bcda9b55aa0600ee87861dda418484c7fdeaf3a4af4da8fd57a8c65","target":"record","created_at":"2026-07-05T03:14:45Z","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":"7f4e59045e817fd1de54470bf2481b0f2151aa95619c04eab6f4f75badac2301","cross_cats_sorted":["cs.NA","math.NA"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-09-26T15:38:02Z","title_canon_sha256":"5d8961dd8960e1084a1e140fd3d0fac707f837dc5270c7f6ccad1ac5bdbe4e09"},"schema_version":"1.0","source":{"id":"2009.12623","kind":"arxiv","version":2}},"canonical_sha256":"78db97f3af80e33d7ae1bfcc14f42d8a78e1cfe415c73c76d117c27aedb77f2e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78db97f3af80e33d7ae1bfcc14f42d8a78e1cfe415c73c76d117c27aedb77f2e","first_computed_at":"2026-07-05T03:14:45.200081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:14:45.200081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q+bO+0oI9ZxKixMrN/FuVyvc/qFlUKOHQr9WEYc9uC9+Fq35Vrx51B0SMZAccY7AVbVFifpiJZU2OMehP50yBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:14:45.200568Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.12623","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:444cdcd70bcda9b55aa0600ee87861dda418484c7fdeaf3a4af4da8fd57a8c65","sha256:a418c8207245735a32ea549d671c5665e14d0b66df89680f21b831bdfbad23b9"],"state_sha256":"b56c81dd93101b0e5fb54fa1a68346f26ddae70c8402ac13968a28d333f45f47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vYfqyEpmNVDz3t6ds3RZwVfJpCuFcfvTqa/aRu9nGxy9nNzPjdrfV/OkN6TKv5X0lYMvaIypkauKRpltCxhRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T14:59:21.995904Z","bundle_sha256":"32e64cac71e0dc056ac9f0a2d60da2ffa707437c9da01d6a81d54644c2789527"}}