{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:6RUZFHKNZPZNRNVO7CQQNIYWWP","short_pith_number":"pith:6RUZFHKN","canonical_record":{"source":{"id":"1808.10375","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-30T16:04:27Z","cross_cats_sorted":["cond-mat.mes-hall","cs.DC","physics.optics"],"title_canon_sha256":"ad98be6788584e6fd3dae92921b5d55827cdabdbe7202a8450190c51f5cd1aa9","abstract_canon_sha256":"33d5706f68e81ba321631b5a760bdc74066e1612a7343f8712ec80945675f206"},"schema_version":"1.0"},"canonical_sha256":"f469929d4dcbf2d8b6aef8a106a316b3c57daeb51f33afa60f8beeba00e275f9","source":{"kind":"arxiv","id":"1808.10375","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.10375","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"arxiv_version","alias_value":"1808.10375v1","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.10375","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"pith_short_12","alias_value":"6RUZFHKNZPZN","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6RUZFHKNZPZNRNVO","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6RUZFHKN","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:6RUZFHKNZPZNRNVO7CQQNIYWWP","target":"record","payload":{"canonical_record":{"source":{"id":"1808.10375","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-30T16:04:27Z","cross_cats_sorted":["cond-mat.mes-hall","cs.DC","physics.optics"],"title_canon_sha256":"ad98be6788584e6fd3dae92921b5d55827cdabdbe7202a8450190c51f5cd1aa9","abstract_canon_sha256":"33d5706f68e81ba321631b5a760bdc74066e1612a7343f8712ec80945675f206"},"schema_version":"1.0"},"canonical_sha256":"f469929d4dcbf2d8b6aef8a106a316b3c57daeb51f33afa60f8beeba00e275f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:01.872965Z","signature_b64":"I3s5VEEI43mJPQRdtR8+DjlXSH1+sIndSzVheB97Ng2/BARHSzt3OB69355m2p63xCYSFbUJD7TiwmsBDj4oAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f469929d4dcbf2d8b6aef8a106a316b3c57daeb51f33afa60f8beeba00e275f9","last_reissued_at":"2026-05-18T00:00:01.872435Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:01.872435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.10375","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":"2026-05-18T00:00:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4ikhHPggNKfcySb0EhWkZ/A0OaVHnwshkAm2kac0xxPfVboyDO4VNuCE24iUmpAuGf5/3b4N/sGzvdl3IehOBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:19:36.375889Z"},"content_sha256":"67c9b887a6689295e4967a313cd6e0349d07dac5e737301d6f815fdd3e39322e","schema_version":"1.0","event_id":"sha256:67c9b887a6689295e4967a313cd6e0349d07dac5e737301d6f815fdd3e39322e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:6RUZFHKNZPZNRNVO7CQQNIYWWP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Performance Multi-Mode Ptychography Reconstruction on Distributed GPUs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cs.DC","physics.optics"],"primary_cat":"physics.comp-ph","authors_text":"Hanfei Yan, Meifeng Lin, Stuart I. Campbell, Sungsoo Ha, Wei Xu, Xiaojing Huang, Yao-Lung L. Fang, Yong S. Chu, Zhihua Dong","submitted_at":"2018-08-30T16:04:27Z","abstract_excerpt":"Ptychography is an emerging imaging technique that is able to provide wavelength-limited spatial resolution from specimen with extended lateral dimensions. As a scanning microscopy method, a typical two-dimensional image requires a number of data frames. As a diffraction-based imaging technique, the real-space image has to be recovered through iterative reconstruction algorithms. Due to these two inherent aspects, a ptychographic reconstruction is generally a computation-intensive and time-consuming process, which limits the throughput of this method. We report an accelerated version of the mu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.10375","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":"2026-05-18T00:00:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WB4UvhPBmCEignZl7mdgEqc+COrVhmWHaIQHo39EDkLgLG00vbgCIOvmeqdSIEYmudL0M4/vCff8SbaecBN+DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:19:36.376241Z"},"content_sha256":"1071bc7271c5e3b4457969f9b1ac17de0290e2a3fef5d3761b9117514acb5f1a","schema_version":"1.0","event_id":"sha256:1071bc7271c5e3b4457969f9b1ac17de0290e2a3fef5d3761b9117514acb5f1a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/bundle.json","state_url":"https://pith.science/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/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":"2026-06-02T02:19:36Z","links":{"resolver":"https://pith.science/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP","bundle":"https://pith.science/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/bundle.json","state":"https://pith.science/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6RUZFHKNZPZNRNVO7CQQNIYWWP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6RUZFHKNZPZNRNVO7CQQNIYWWP","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":"33d5706f68e81ba321631b5a760bdc74066e1612a7343f8712ec80945675f206","cross_cats_sorted":["cond-mat.mes-hall","cs.DC","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-30T16:04:27Z","title_canon_sha256":"ad98be6788584e6fd3dae92921b5d55827cdabdbe7202a8450190c51f5cd1aa9"},"schema_version":"1.0","source":{"id":"1808.10375","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.10375","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"arxiv_version","alias_value":"1808.10375v1","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.10375","created_at":"2026-05-18T00:00:01Z"},{"alias_kind":"pith_short_12","alias_value":"6RUZFHKNZPZN","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6RUZFHKNZPZNRNVO","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6RUZFHKN","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:1071bc7271c5e3b4457969f9b1ac17de0290e2a3fef5d3761b9117514acb5f1a","target":"graph","created_at":"2026-05-18T00:00:01Z","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":"Ptychography is an emerging imaging technique that is able to provide wavelength-limited spatial resolution from specimen with extended lateral dimensions. As a scanning microscopy method, a typical two-dimensional image requires a number of data frames. As a diffraction-based imaging technique, the real-space image has to be recovered through iterative reconstruction algorithms. Due to these two inherent aspects, a ptychographic reconstruction is generally a computation-intensive and time-consuming process, which limits the throughput of this method. We report an accelerated version of the mu","authors_text":"Hanfei Yan, Meifeng Lin, Stuart I. Campbell, Sungsoo Ha, Wei Xu, Xiaojing Huang, Yao-Lung L. Fang, Yong S. Chu, Zhihua Dong","cross_cats":["cond-mat.mes-hall","cs.DC","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-30T16:04:27Z","title":"High-Performance Multi-Mode Ptychography Reconstruction on Distributed GPUs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.10375","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":"sha256:67c9b887a6689295e4967a313cd6e0349d07dac5e737301d6f815fdd3e39322e","target":"record","created_at":"2026-05-18T00:00:01Z","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":"33d5706f68e81ba321631b5a760bdc74066e1612a7343f8712ec80945675f206","cross_cats_sorted":["cond-mat.mes-hall","cs.DC","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-30T16:04:27Z","title_canon_sha256":"ad98be6788584e6fd3dae92921b5d55827cdabdbe7202a8450190c51f5cd1aa9"},"schema_version":"1.0","source":{"id":"1808.10375","kind":"arxiv","version":1}},"canonical_sha256":"f469929d4dcbf2d8b6aef8a106a316b3c57daeb51f33afa60f8beeba00e275f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f469929d4dcbf2d8b6aef8a106a316b3c57daeb51f33afa60f8beeba00e275f9","first_computed_at":"2026-05-18T00:00:01.872435Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:01.872435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I3s5VEEI43mJPQRdtR8+DjlXSH1+sIndSzVheB97Ng2/BARHSzt3OB69355m2p63xCYSFbUJD7TiwmsBDj4oAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:01.872965Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.10375","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67c9b887a6689295e4967a313cd6e0349d07dac5e737301d6f815fdd3e39322e","sha256:1071bc7271c5e3b4457969f9b1ac17de0290e2a3fef5d3761b9117514acb5f1a"],"state_sha256":"85e57a618b61126a0d2ae23de4ec102d4eb9fb97cb7c65fe138e2b0c6ff0d63a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MO6yIjMAtQcnZxK1OaPf8KCpJUfiAFO09ZhGwPBFaWmZkiZIwnJ1mJqpEautXfkXLMWBe5/cY21Va/ZN7hAlCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:19:36.378116Z","bundle_sha256":"e09d0623e3fefa80100e3d9da5599e5ea681207471f07ea3132be6f6b86b6535"}}