{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KYDYTFQBKWIGJ6RJQUNXPHDSKR","short_pith_number":"pith:KYDYTFQB","canonical_record":{"source":{"id":"1501.02282","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2015-01-09T22:05:22Z","cross_cats_sorted":[],"title_canon_sha256":"517e798a192b8c99a3115b129c9f8ad7bfdf2a141f3c27237eb44398eee3dd77","abstract_canon_sha256":"0191e194039fd1ae81a6d23649369050dd58defa5e5dfd49a19f28e6caae1615"},"schema_version":"1.0"},"canonical_sha256":"5607899601559064fa29851b779c72546d3adbd104385218a6a47fbf36ad49be","source":{"kind":"arxiv","id":"1501.02282","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02282","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02282v1","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02282","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"pith_short_12","alias_value":"KYDYTFQBKWIG","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KYDYTFQBKWIGJ6RJ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KYDYTFQB","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KYDYTFQBKWIGJ6RJQUNXPHDSKR","target":"record","payload":{"canonical_record":{"source":{"id":"1501.02282","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2015-01-09T22:05:22Z","cross_cats_sorted":[],"title_canon_sha256":"517e798a192b8c99a3115b129c9f8ad7bfdf2a141f3c27237eb44398eee3dd77","abstract_canon_sha256":"0191e194039fd1ae81a6d23649369050dd58defa5e5dfd49a19f28e6caae1615"},"schema_version":"1.0"},"canonical_sha256":"5607899601559064fa29851b779c72546d3adbd104385218a6a47fbf36ad49be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:38.355424Z","signature_b64":"cBZkjSOQtK5+EC7VcezHz2Epj6FoGFkgnPl1zzswT0dGCqgVfO3QXdbNnoMbs3gARQ43TmsFAPFCh/hloMegCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5607899601559064fa29851b779c72546d3adbd104385218a6a47fbf36ad49be","last_reissued_at":"2026-05-18T02:29:38.354955Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:38.354955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.02282","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":"2026-05-18T02:29:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l9q1W2gyBIhrJRzVPlFHidIwZhWaFjWnVUXlrlIayGE5zcZCj50QQluPbhLp6R+H3F6gp1Hyif9E/ejg1kx+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:01:01.057435Z"},"content_sha256":"99f0657212e756378aca9c36e08f5011158c0a4ec92d88888530268474afd0a6","schema_version":"1.0","event_id":"sha256:99f0657212e756378aca9c36e08f5011158c0a4ec92d88888530268474afd0a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KYDYTFQBKWIGJ6RJQUNXPHDSKR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Adaptive and application dependent runtime guided hardware prefetcher reconfiguration on the IBM POWER7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Cristobal Ortega, David Prat, Marc Casas, Mateo Valero, Miquel Moret\\'o","submitted_at":"2015-01-09T22:05:22Z","abstract_excerpt":"Hardware data prefetcher engines have been extensively used to reduce the impact of memory latency. However, microprocessors' hardware prefetcher engines do not include any automatic hardware control able to dynamically tune their operation. This lacking architectural feature causes systems to operate with prefetchers in a fixed configuration, which in many cases harms performance and energy consumption.\n  In this paper, a piece of software that solves the discussed problem in the context of the IBM POWER7 microprocessor is presented. The proposed solution involves using the runtime software a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02282","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":"2026-05-18T02:29:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WSslzjeYgj14ZNCO4zH9snQ0hBTM2lznIArwZCEJj2Tjqt5dwiREjVWf1Nn6vv0T1hKD3Xep8+JpWjARmLFDCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T06:01:01.057800Z"},"content_sha256":"7f6c65982c5add00223f0eabdda54b8d377e28ecf33d0e91167c384dff0a08a1","schema_version":"1.0","event_id":"sha256:7f6c65982c5add00223f0eabdda54b8d377e28ecf33d0e91167c384dff0a08a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/bundle.json","state_url":"https://pith.science/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/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":"2026-05-27T06:01:01Z","links":{"resolver":"https://pith.science/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR","bundle":"https://pith.science/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/bundle.json","state":"https://pith.science/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KYDYTFQBKWIGJ6RJQUNXPHDSKR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KYDYTFQBKWIGJ6RJQUNXPHDSKR","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":"0191e194039fd1ae81a6d23649369050dd58defa5e5dfd49a19f28e6caae1615","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2015-01-09T22:05:22Z","title_canon_sha256":"517e798a192b8c99a3115b129c9f8ad7bfdf2a141f3c27237eb44398eee3dd77"},"schema_version":"1.0","source":{"id":"1501.02282","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02282","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02282v1","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02282","created_at":"2026-05-18T02:29:38Z"},{"alias_kind":"pith_short_12","alias_value":"KYDYTFQBKWIG","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KYDYTFQBKWIGJ6RJ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KYDYTFQB","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:7f6c65982c5add00223f0eabdda54b8d377e28ecf33d0e91167c384dff0a08a1","target":"graph","created_at":"2026-05-18T02:29:38Z","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":"Hardware data prefetcher engines have been extensively used to reduce the impact of memory latency. However, microprocessors' hardware prefetcher engines do not include any automatic hardware control able to dynamically tune their operation. This lacking architectural feature causes systems to operate with prefetchers in a fixed configuration, which in many cases harms performance and energy consumption.\n  In this paper, a piece of software that solves the discussed problem in the context of the IBM POWER7 microprocessor is presented. The proposed solution involves using the runtime software a","authors_text":"Cristobal Ortega, David Prat, Marc Casas, Mateo Valero, Miquel Moret\\'o","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2015-01-09T22:05:22Z","title":"Adaptive and application dependent runtime guided hardware prefetcher reconfiguration on the IBM POWER7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02282","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":"sha256:99f0657212e756378aca9c36e08f5011158c0a4ec92d88888530268474afd0a6","target":"record","created_at":"2026-05-18T02:29:38Z","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":"0191e194039fd1ae81a6d23649369050dd58defa5e5dfd49a19f28e6caae1615","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2015-01-09T22:05:22Z","title_canon_sha256":"517e798a192b8c99a3115b129c9f8ad7bfdf2a141f3c27237eb44398eee3dd77"},"schema_version":"1.0","source":{"id":"1501.02282","kind":"arxiv","version":1}},"canonical_sha256":"5607899601559064fa29851b779c72546d3adbd104385218a6a47fbf36ad49be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5607899601559064fa29851b779c72546d3adbd104385218a6a47fbf36ad49be","first_computed_at":"2026-05-18T02:29:38.354955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:38.354955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cBZkjSOQtK5+EC7VcezHz2Epj6FoGFkgnPl1zzswT0dGCqgVfO3QXdbNnoMbs3gARQ43TmsFAPFCh/hloMegCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:38.355424Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.02282","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99f0657212e756378aca9c36e08f5011158c0a4ec92d88888530268474afd0a6","sha256:7f6c65982c5add00223f0eabdda54b8d377e28ecf33d0e91167c384dff0a08a1"],"state_sha256":"03dad586cf54c134892602ad51d613dc5bbf0e65a29596119155d87fc78ad6e2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RRbx8mc1HWcBgzD5BnqKt6/ZMJZ+5IQ6je/rlX5PxMI0BklUAOqJxrElUYXIfbfVJPTRxBBfRz2HY1JAp4MtAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T06:01:01.060640Z","bundle_sha256":"a53a0602ac89cac42d5bb2560d5a22547f5a36d2246f500eca8dd123fb51e93a"}}