{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DF2VIDRTKMX5Q7TUOMRBYSPH6J","short_pith_number":"pith:DF2VIDRT","canonical_record":{"source":{"id":"1803.01618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PF","submitted_at":"2018-03-05T11:53:24Z","cross_cats_sorted":[],"title_canon_sha256":"d0f8b164f0c6114fabbff7fdd62c1568233ce47c442f33ca53597f2e062e43ed","abstract_canon_sha256":"03a7b77e8f6985d88568a3223c1f036d566c2e02fa687dabf886394e50ea2ddb"},"schema_version":"1.0"},"canonical_sha256":"1975540e33532fd87e7473221c49e7f26987aa1c2621d0ab6626269131b2858c","source":{"kind":"arxiv","id":"1803.01618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.01618","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"arxiv_version","alias_value":"1803.01618v1","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01618","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"pith_short_12","alias_value":"DF2VIDRTKMX5","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DF2VIDRTKMX5Q7TU","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DF2VIDRT","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DF2VIDRTKMX5Q7TUOMRBYSPH6J","target":"record","payload":{"canonical_record":{"source":{"id":"1803.01618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PF","submitted_at":"2018-03-05T11:53:24Z","cross_cats_sorted":[],"title_canon_sha256":"d0f8b164f0c6114fabbff7fdd62c1568233ce47c442f33ca53597f2e062e43ed","abstract_canon_sha256":"03a7b77e8f6985d88568a3223c1f036d566c2e02fa687dabf886394e50ea2ddb"},"schema_version":"1.0"},"canonical_sha256":"1975540e33532fd87e7473221c49e7f26987aa1c2621d0ab6626269131b2858c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:23.466773Z","signature_b64":"21zKnb+k534+bNr/l5kqMhNfDUeJaN8kYx9ttjoSPrjaZYXUJ2gXvpGivwX5Hnv4KXHRCu040O5771pCWSDADg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1975540e33532fd87e7473221c49e7f26987aa1c2621d0ab6626269131b2858c","last_reissued_at":"2026-05-18T00:11:23.466329Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:23.466329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.01618","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":"2026-05-18T00:11:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"32Gq64XGYmcKasz47j+pwdXVBIg63W41OsMy0VQZy5xAncUWbWvRpLTGf+WW9e/5sKhyDY8i7iD/jD6Uh0e3AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T07:56:19.321482Z"},"content_sha256":"d5f511b2626e0a9d68d45b6219870b9b109aa2ba698daaddd43e0323634615a9","schema_version":"1.0","event_id":"sha256:d5f511b2626e0a9d68d45b6219870b9b109aa2ba698daaddd43e0323634615a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DF2VIDRTKMX5Q7TUOMRBYSPH6J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the accuracy and usefulness of analytic energy models for contemporary multicore processors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.PF","authors_text":"Dietmar Fey, Georg Hager, Johannes Hofmann","submitted_at":"2018-03-05T11:53:24Z","abstract_excerpt":"This paper presents refinements to the execution-cache-memory performance model and a previously published power model for multicore processors. The combination of both enables a very accurate prediction of performance and energy consumption of contemporary multicore processors as a function of relevant parameters such as number of active cores as well as core and Uncore frequencies. Model validation is performed on the Sandy Bridge-EP and Broadwell-EP microarchitectures. Production-related variations in chip quality are demonstrated through a statistical analysis of the fit parameters obtaine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01618","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":"2026-05-18T00:11:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"grvIFVL0bV3488cnwTcdbWR+vivHur/N+UfrnTilMXchK27CVmSXTED0B9U22suGi+uPbhOXQqTy4rNZzG3nCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T07:56:19.322192Z"},"content_sha256":"84370eaed0622db92f41072c9b51468054211a03c42bd53f9fa5eca9d7337cdd","schema_version":"1.0","event_id":"sha256:84370eaed0622db92f41072c9b51468054211a03c42bd53f9fa5eca9d7337cdd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/bundle.json","state_url":"https://pith.science/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/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":"2026-06-08T07:56:19Z","links":{"resolver":"https://pith.science/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J","bundle":"https://pith.science/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/bundle.json","state":"https://pith.science/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DF2VIDRTKMX5Q7TUOMRBYSPH6J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DF2VIDRTKMX5Q7TUOMRBYSPH6J","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":"03a7b77e8f6985d88568a3223c1f036d566c2e02fa687dabf886394e50ea2ddb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PF","submitted_at":"2018-03-05T11:53:24Z","title_canon_sha256":"d0f8b164f0c6114fabbff7fdd62c1568233ce47c442f33ca53597f2e062e43ed"},"schema_version":"1.0","source":{"id":"1803.01618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.01618","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"arxiv_version","alias_value":"1803.01618v1","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01618","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"pith_short_12","alias_value":"DF2VIDRTKMX5","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DF2VIDRTKMX5Q7TU","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DF2VIDRT","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:84370eaed0622db92f41072c9b51468054211a03c42bd53f9fa5eca9d7337cdd","target":"graph","created_at":"2026-05-18T00:11:23Z","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":"This paper presents refinements to the execution-cache-memory performance model and a previously published power model for multicore processors. The combination of both enables a very accurate prediction of performance and energy consumption of contemporary multicore processors as a function of relevant parameters such as number of active cores as well as core and Uncore frequencies. Model validation is performed on the Sandy Bridge-EP and Broadwell-EP microarchitectures. Production-related variations in chip quality are demonstrated through a statistical analysis of the fit parameters obtaine","authors_text":"Dietmar Fey, Georg Hager, Johannes Hofmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PF","submitted_at":"2018-03-05T11:53:24Z","title":"On the accuracy and usefulness of analytic energy models for contemporary multicore processors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01618","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:d5f511b2626e0a9d68d45b6219870b9b109aa2ba698daaddd43e0323634615a9","target":"record","created_at":"2026-05-18T00:11:23Z","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":"03a7b77e8f6985d88568a3223c1f036d566c2e02fa687dabf886394e50ea2ddb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PF","submitted_at":"2018-03-05T11:53:24Z","title_canon_sha256":"d0f8b164f0c6114fabbff7fdd62c1568233ce47c442f33ca53597f2e062e43ed"},"schema_version":"1.0","source":{"id":"1803.01618","kind":"arxiv","version":1}},"canonical_sha256":"1975540e33532fd87e7473221c49e7f26987aa1c2621d0ab6626269131b2858c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1975540e33532fd87e7473221c49e7f26987aa1c2621d0ab6626269131b2858c","first_computed_at":"2026-05-18T00:11:23.466329Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:23.466329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"21zKnb+k534+bNr/l5kqMhNfDUeJaN8kYx9ttjoSPrjaZYXUJ2gXvpGivwX5Hnv4KXHRCu040O5771pCWSDADg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:23.466773Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.01618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5f511b2626e0a9d68d45b6219870b9b109aa2ba698daaddd43e0323634615a9","sha256:84370eaed0622db92f41072c9b51468054211a03c42bd53f9fa5eca9d7337cdd"],"state_sha256":"bffcfe40d7c24ae34d6cf29bdd618d9d25fd65e59901dcd4219b0efc69c80f3b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PUvBNtTKuaUsBi3PftttOscxRUj1/2ldiR4g5TqnLNh7udPTiJpAoudSco1lFV7TmxGCAGnJOl3Y4ufyem+fAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T07:56:19.328283Z","bundle_sha256":"8632ec253602c7c6c8f77d302e727bc04523ac1943fdee381d8dfbb1a72db3e1"}}