{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:AT5YXF7I5Y5JYQSEJ375HIG6V2","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":"35684b70b4630f2aa1c7b12022756815888bec4d2ac818607b4613d603100d8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2026-08-13T09:54:38Z","title_canon_sha256":"64dd87a57db6cde7453215338e22aafcd9f2999b8eb825af8d6c218edda42c57"},"schema_version":"1.0","source":{"id":"2608.13027","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.13027","created_at":"2026-08-14T01:00:09Z"},{"alias_kind":"arxiv_version","alias_value":"2608.13027v1","created_at":"2026-08-14T01:00:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.13027","created_at":"2026-08-14T01:00:09Z"},{"alias_kind":"pith_short_12","alias_value":"AT5YXF7I5Y5J","created_at":"2026-08-14T01:00:09Z"},{"alias_kind":"pith_short_16","alias_value":"AT5YXF7I5Y5JYQSE","created_at":"2026-08-14T01:00:09Z"},{"alias_kind":"pith_short_8","alias_value":"AT5YXF7I","created_at":"2026-08-14T01:00:09Z"}],"graph_snapshots":[{"event_id":"sha256:bb08bef9a139e05b771f9378362b4e178db2bf4b1585bd471b55aeceb5a954ef","target":"graph","created_at":"2026-08-14T01:00:09Z","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/2608.13027/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hardware prefetchers are crucial to processor performance, yet their design remains labor-intensive and expert-driven. Architects inspect execution and memory-access traces, identify patterns, translate them into online hardware heuristics, and evaluate them in simulation, often with no guarantee of improvement. Human experts cannot systematically inspect billion-instruction traces across diverse real-world workloads.\n  We present a performance-anomaly-driven autoresearch flow that repeatedly asks why a deployed prefetcher fails and uses the diagnoses to construct the Mixture of Prefetchers (M","authors_text":"Ceyu Xu, Ningzhi Ai, Xiangfeng Sun, Yiyang Yuan, Yuan Xie, Zeyu Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2026-08-13T09:54:38Z","title":"Why Do Prefetchers Fail? Let Agents Answer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.13027","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":"sha256:38194a5b786c416ec762e06ef6ac3fec0ad5902a26ab84165b954278c915b340","target":"record","created_at":"2026-08-14T01:00:09Z","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":"35684b70b4630f2aa1c7b12022756815888bec4d2ac818607b4613d603100d8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2026-08-13T09:54:38Z","title_canon_sha256":"64dd87a57db6cde7453215338e22aafcd9f2999b8eb825af8d6c218edda42c57"},"schema_version":"1.0","source":{"id":"2608.13027","kind":"arxiv","version":1}},"canonical_sha256":"04fb8b97e8ee3a9c42444effd3a0deae9cee9798eb7f1b99bd08a45a76d92c72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04fb8b97e8ee3a9c42444effd3a0deae9cee9798eb7f1b99bd08a45a76d92c72","first_computed_at":"2026-08-14T01:00:09.502014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-14T01:00:09.502014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OCEwY1fHf14EqKiT4pitxcS/mAW/XtpmUNxw2sKumjscXHTD9ixL6BiIR+HhsA0TtCTRM+YbvQTHtPhUjIYyBA==","signature_status":"signed_v1","signed_at":"2026-08-14T01:00:09.504030Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.13027","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38194a5b786c416ec762e06ef6ac3fec0ad5902a26ab84165b954278c915b340","sha256:bb08bef9a139e05b771f9378362b4e178db2bf4b1585bd471b55aeceb5a954ef"],"state_sha256":"d6a0f7113682996ef8ff7896ac77bcd4fb5e5435589f924ff6a38c3054b8873d"}