{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:NVMABEAMFOYOML4NKDZFI4TWMW","short_pith_number":"pith:NVMABEAM","canonical_record":{"source":{"id":"0901.0134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2008-12-31T19:35:07Z","cross_cats_sorted":[],"title_canon_sha256":"069fca908f66307a5067d67fbcb936a26aa93e68b9cc6a09f6ae20b76358ae8b","abstract_canon_sha256":"cf044814009f83e2a349b51fe8c85323ccf9ec092dfca31036d8cc0e249ad4ed"},"schema_version":"1.0"},"canonical_sha256":"6d5800900c2bb0e62f8d50f25472766584d4a24b8a37ef6c75ce89e4b0a95a4e","source":{"kind":"arxiv","id":"0901.0134","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.0134","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"arxiv_version","alias_value":"0901.0134v1","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.0134","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"pith_short_12","alias_value":"NVMABEAMFOYO","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"NVMABEAMFOYOML4N","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"NVMABEAM","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:NVMABEAMFOYOML4NKDZFI4TWMW","target":"record","payload":{"canonical_record":{"source":{"id":"0901.0134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2008-12-31T19:35:07Z","cross_cats_sorted":[],"title_canon_sha256":"069fca908f66307a5067d67fbcb936a26aa93e68b9cc6a09f6ae20b76358ae8b","abstract_canon_sha256":"cf044814009f83e2a349b51fe8c85323ccf9ec092dfca31036d8cc0e249ad4ed"},"schema_version":"1.0"},"canonical_sha256":"6d5800900c2bb0e62f8d50f25472766584d4a24b8a37ef6c75ce89e4b0a95a4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:11.541512Z","signature_b64":"d0DxSRCdEleAVX8h+o8fX/BnFl+U1xgEStxYyuGIR6dNj7vX9rZSbC+oEwQQW2WUdi1GZvIqLNsJpKdAAM01Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d5800900c2bb0e62f8d50f25472766584d4a24b8a37ef6c75ce89e4b0a95a4e","last_reissued_at":"2026-05-18T00:59:11.540854Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:11.540854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0901.0134","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":"2026-05-18T00:59:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uv9bvX+0NFBnlm11n4/8hFGPS9pBluGNCSyxwzUHyVWXBq39ltx/WEUErW2D7PtJ/QhoUKXADw0SWIqW0GPYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:05:38.659811Z"},"content_sha256":"33d002525db4ead4e4c3f1ea285283d3b7c95563cd96b2b5a0354604f28a69d9","schema_version":"1.0","event_id":"sha256:33d002525db4ead4e4c3f1ea285283d3b7c95563cd96b2b5a0354604f28a69d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:NVMABEAMFOYOML4NKDZFI4TWMW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design and Evaluation of a Collective IO Model for Loosely Coupled Petascale Programming","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Allan Espinosa, Ian Foster, Ioan Raicu, Kamil Iskra, Michael Wilde, Zhao Zhang","submitted_at":"2008-12-31T19:35:07Z","abstract_excerpt":"Loosely coupled programming is a powerful paradigm for rapidly creating higher-level applications from scientific programs on petascale systems, typically using scripting languages. This paradigm is a form of many-task computing (MTC) which focuses on the passing of data between programs as ordinary files rather than messages. While it has the significant benefits of decoupling producer and consumer and allowing existing application programs to be executed in parallel with no recoding, its typical implementation using shared file systems places a high performance burden on the overall system a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.0134","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":"2026-05-18T00:59:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dJ8yXL0z/REMvi+IGhp+MVdW0i5YVYibPJbFj1zlOfW3KqJJQKTDGJSzR3waQHz66xru631XGvM1i2NTP1upDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:05:38.660483Z"},"content_sha256":"1a0f48aee54e6df7c965149bbb72bf2043df6d8e18ad1d48f2502063d5ddcd6f","schema_version":"1.0","event_id":"sha256:1a0f48aee54e6df7c965149bbb72bf2043df6d8e18ad1d48f2502063d5ddcd6f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NVMABEAMFOYOML4NKDZFI4TWMW/bundle.json","state_url":"https://pith.science/pith/NVMABEAMFOYOML4NKDZFI4TWMW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NVMABEAMFOYOML4NKDZFI4TWMW/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":"2026-05-25T22:05:38Z","links":{"resolver":"https://pith.science/pith/NVMABEAMFOYOML4NKDZFI4TWMW","bundle":"https://pith.science/pith/NVMABEAMFOYOML4NKDZFI4TWMW/bundle.json","state":"https://pith.science/pith/NVMABEAMFOYOML4NKDZFI4TWMW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NVMABEAMFOYOML4NKDZFI4TWMW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:NVMABEAMFOYOML4NKDZFI4TWMW","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":"cf044814009f83e2a349b51fe8c85323ccf9ec092dfca31036d8cc0e249ad4ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2008-12-31T19:35:07Z","title_canon_sha256":"069fca908f66307a5067d67fbcb936a26aa93e68b9cc6a09f6ae20b76358ae8b"},"schema_version":"1.0","source":{"id":"0901.0134","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.0134","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"arxiv_version","alias_value":"0901.0134v1","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.0134","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"pith_short_12","alias_value":"NVMABEAMFOYO","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"NVMABEAMFOYOML4N","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"NVMABEAM","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:1a0f48aee54e6df7c965149bbb72bf2043df6d8e18ad1d48f2502063d5ddcd6f","target":"graph","created_at":"2026-05-18T00:59:11Z","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":"Loosely coupled programming is a powerful paradigm for rapidly creating higher-level applications from scientific programs on petascale systems, typically using scripting languages. This paradigm is a form of many-task computing (MTC) which focuses on the passing of data between programs as ordinary files rather than messages. While it has the significant benefits of decoupling producer and consumer and allowing existing application programs to be executed in parallel with no recoding, its typical implementation using shared file systems places a high performance burden on the overall system a","authors_text":"Allan Espinosa, Ian Foster, Ioan Raicu, Kamil Iskra, Michael Wilde, Zhao Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2008-12-31T19:35:07Z","title":"Design and Evaluation of a Collective IO Model for Loosely Coupled Petascale Programming"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.0134","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":"sha256:33d002525db4ead4e4c3f1ea285283d3b7c95563cd96b2b5a0354604f28a69d9","target":"record","created_at":"2026-05-18T00:59:11Z","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":"cf044814009f83e2a349b51fe8c85323ccf9ec092dfca31036d8cc0e249ad4ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2008-12-31T19:35:07Z","title_canon_sha256":"069fca908f66307a5067d67fbcb936a26aa93e68b9cc6a09f6ae20b76358ae8b"},"schema_version":"1.0","source":{"id":"0901.0134","kind":"arxiv","version":1}},"canonical_sha256":"6d5800900c2bb0e62f8d50f25472766584d4a24b8a37ef6c75ce89e4b0a95a4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d5800900c2bb0e62f8d50f25472766584d4a24b8a37ef6c75ce89e4b0a95a4e","first_computed_at":"2026-05-18T00:59:11.540854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:11.540854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d0DxSRCdEleAVX8h+o8fX/BnFl+U1xgEStxYyuGIR6dNj7vX9rZSbC+oEwQQW2WUdi1GZvIqLNsJpKdAAM01Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:11.541512Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.0134","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33d002525db4ead4e4c3f1ea285283d3b7c95563cd96b2b5a0354604f28a69d9","sha256:1a0f48aee54e6df7c965149bbb72bf2043df6d8e18ad1d48f2502063d5ddcd6f"],"state_sha256":"728c9183a91d2da41d00d97d6834c1695613def3590dcd171c20572db4f52969"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WX9l0xCQcHksBXQJ6STLQgZXdO12NBYnHc5oLpNnpox/WsKHMQrthDr5QszerCZ/3K1Acj4LaZ0DH1ZK5o5sBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:05:38.663999Z","bundle_sha256":"6536b785d4c64caa38a16100e42f703e2a07a2597bccc7d037699f3efe03f9d9"}}