{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:SLE2IUVQBVBMSRPKXTQWU7VBXF","short_pith_number":"pith:SLE2IUVQ","canonical_record":{"source":{"id":"1002.4264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2010-02-23T08:17:43Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"57be6f07927f07e99792081a133e333aeb5d711bba89f2bd3bf4ff91c4ccb015","abstract_canon_sha256":"64b7098aeba1e8a0e20836244ff5d450ebb3e059563b9217b26cb336dbea2550"},"schema_version":"1.0"},"canonical_sha256":"92c9a452b00d42c945eabce16a7ea1b96045b394924217564c8ef8dce3a34ccd","source":{"kind":"arxiv","id":"1002.4264","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.4264","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"arxiv_version","alias_value":"1002.4264v1","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.4264","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_12","alias_value":"SLE2IUVQBVBM","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_16","alias_value":"SLE2IUVQBVBMSRPK","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_8","alias_value":"SLE2IUVQ","created_at":"2026-07-04T17:22:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:SLE2IUVQBVBMSRPKXTQWU7VBXF","target":"record","payload":{"canonical_record":{"source":{"id":"1002.4264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2010-02-23T08:17:43Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"57be6f07927f07e99792081a133e333aeb5d711bba89f2bd3bf4ff91c4ccb015","abstract_canon_sha256":"64b7098aeba1e8a0e20836244ff5d450ebb3e059563b9217b26cb336dbea2550"},"schema_version":"1.0"},"canonical_sha256":"92c9a452b00d42c945eabce16a7ea1b96045b394924217564c8ef8dce3a34ccd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:22:19.747587Z","signature_b64":"zanbgFtkPRzJ4LyL0pQTbA+hS6Moy1PHRDf7ObdZSajF3otQIyAPJkU/bEEbfb+H9ucwLiuU62j9Je+THq+FAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92c9a452b00d42c945eabce16a7ea1b96045b394924217564c8ef8dce3a34ccd","last_reissued_at":"2026-07-04T17:22:19.747159Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:22:19.747159Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1002.4264","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":"2026-07-04T17:22:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rJ7GeV8w0SQKYkirv6Xw6h+Oe8kkg8Tki1hiY+1h+0EOgogEGaz0Q6MSGVDg/5QR/xxyNqmkDtkKtDXzXfgsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:22:38.485669Z"},"content_sha256":"1ffa85d8597aec56912a0dcecadf67ab356c6ccff4e213f3879f89aeb1267cbb","schema_version":"1.0","event_id":"sha256:1ffa85d8597aec56912a0dcecadf67ab356c6ccff4e213f3879f89aeb1267cbb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:SLE2IUVQBVBMSRPKXTQWU7VBXF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic Performance Debugging of SPMD Parallel Programs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PF"],"primary_cat":"cs.DC","authors_text":"Bibo Tu, Dan Meng, Jianfeng Zhan, Lin Yuan, Xu Liu","submitted_at":"2010-02-23T08:17:43Z","abstract_excerpt":"Automatic performance debugging of parallel applications usually involves two steps: automatic detection of performance bottlenecks and uncovering their root causes for performance optimization. Previous work fails to resolve this challenging issue in several ways: first, several previous efforts automate analysis processes, but present the results in a confined way that only identifies performance problems with apriori knowledge; second, several tools take exploratory or confirmatory data analysis to automatically discover relevant performance data relationships. However, these efforts do not"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.4264","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1002.4264/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":"2026-07-04T17:22:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UUmrsIChM1YWaXnbdXhARxZA407XlcGY32TH0skLbAIicCfV8ylWV6o+VByG54YloVIIsCtDQUN+jWdAlucCCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:22:38.486272Z"},"content_sha256":"8293851a689bdaf6f718b145952de0295b6b7168eb84c6e12e8290cfe13b75b1","schema_version":"1.0","event_id":"sha256:8293851a689bdaf6f718b145952de0295b6b7168eb84c6e12e8290cfe13b75b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/bundle.json","state_url":"https://pith.science/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/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":"2026-08-07T16:22:38Z","links":{"resolver":"https://pith.science/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF","bundle":"https://pith.science/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/bundle.json","state":"https://pith.science/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SLE2IUVQBVBMSRPKXTQWU7VBXF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:SLE2IUVQBVBMSRPKXTQWU7VBXF","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":"64b7098aeba1e8a0e20836244ff5d450ebb3e059563b9217b26cb336dbea2550","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2010-02-23T08:17:43Z","title_canon_sha256":"57be6f07927f07e99792081a133e333aeb5d711bba89f2bd3bf4ff91c4ccb015"},"schema_version":"1.0","source":{"id":"1002.4264","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.4264","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"arxiv_version","alias_value":"1002.4264v1","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.4264","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_12","alias_value":"SLE2IUVQBVBM","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_16","alias_value":"SLE2IUVQBVBMSRPK","created_at":"2026-07-04T17:22:19Z"},{"alias_kind":"pith_short_8","alias_value":"SLE2IUVQ","created_at":"2026-07-04T17:22:19Z"}],"graph_snapshots":[{"event_id":"sha256:8293851a689bdaf6f718b145952de0295b6b7168eb84c6e12e8290cfe13b75b1","target":"graph","created_at":"2026-07-04T17:22:19Z","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/1002.4264/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Automatic performance debugging of parallel applications usually involves two steps: automatic detection of performance bottlenecks and uncovering their root causes for performance optimization. Previous work fails to resolve this challenging issue in several ways: first, several previous efforts automate analysis processes, but present the results in a confined way that only identifies performance problems with apriori knowledge; second, several tools take exploratory or confirmatory data analysis to automatically discover relevant performance data relationships. However, these efforts do not","authors_text":"Bibo Tu, Dan Meng, Jianfeng Zhan, Lin Yuan, Xu Liu","cross_cats":["cs.PF"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2010-02-23T08:17:43Z","title":"Automatic Performance Debugging of SPMD Parallel Programs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.4264","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":"sha256:1ffa85d8597aec56912a0dcecadf67ab356c6ccff4e213f3879f89aeb1267cbb","target":"record","created_at":"2026-07-04T17:22:19Z","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":"64b7098aeba1e8a0e20836244ff5d450ebb3e059563b9217b26cb336dbea2550","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2010-02-23T08:17:43Z","title_canon_sha256":"57be6f07927f07e99792081a133e333aeb5d711bba89f2bd3bf4ff91c4ccb015"},"schema_version":"1.0","source":{"id":"1002.4264","kind":"arxiv","version":1}},"canonical_sha256":"92c9a452b00d42c945eabce16a7ea1b96045b394924217564c8ef8dce3a34ccd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92c9a452b00d42c945eabce16a7ea1b96045b394924217564c8ef8dce3a34ccd","first_computed_at":"2026-07-04T17:22:19.747159Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:22:19.747159Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zanbgFtkPRzJ4LyL0pQTbA+hS6Moy1PHRDf7ObdZSajF3otQIyAPJkU/bEEbfb+H9ucwLiuU62j9Je+THq+FAw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:22:19.747587Z","signed_message":"canonical_sha256_bytes"},"source_id":"1002.4264","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ffa85d8597aec56912a0dcecadf67ab356c6ccff4e213f3879f89aeb1267cbb","sha256:8293851a689bdaf6f718b145952de0295b6b7168eb84c6e12e8290cfe13b75b1"],"state_sha256":"674afea25d8943f69b17499e0f5c698aee6bfec865e08051da3f9ad03a62cb75"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3QhweljmYIxfK1/ZU1PgnbT8ljCntUWC/GNMdWq0BYpRkp62HydrWg7cHKLRz2ftD04bpPtB9ZvI52vP2YssDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:22:38.491623Z","bundle_sha256":"88b3e949d0b9dba21df63d1e1a5f24cbd17cd16b9e77adbe4c359284a2fb604c"}}