{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:JEWWJRSZDPQRFIR36V2RWYKTCL","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":"acb50469546617d79a80c59e4c4b89a554fcf5c532f66567a0d725c513459f42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-05-18T15:06:53Z","title_canon_sha256":"7f8aed4c3056afd1165146a253a0dd008965e352f162b5126a95a273aaa30ea0"},"schema_version":"1.0","source":{"id":"2605.18515","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.18515","created_at":"2026-05-20T00:06:05Z"},{"alias_kind":"arxiv_version","alias_value":"2605.18515v1","created_at":"2026-05-20T00:06:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.18515","created_at":"2026-05-20T00:06:05Z"},{"alias_kind":"pith_short_12","alias_value":"JEWWJRSZDPQR","created_at":"2026-05-20T00:06:05Z"},{"alias_kind":"pith_short_16","alias_value":"JEWWJRSZDPQRFIR3","created_at":"2026-05-20T00:06:05Z"},{"alias_kind":"pith_short_8","alias_value":"JEWWJRSZ","created_at":"2026-05-20T00:06:05Z"}],"graph_snapshots":[{"event_id":"sha256:47c4073c01f6cadf0b3886152ba798a2c2a2a0e080c2c43b17a37f8257d0ce11","target":"graph","created_at":"2026-05-20T00:06:05Z","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/2605.18515/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sparse matrix-vector multiplication (SpMV) is crucial in computational science, engineering, and machine learning. Despite substantial efforts to improve SpMV performance on GPUs through various techniques, issues related to data locality, hardware utilization, and load balancing persist, leaving room for further optimization. This paper presents CB-SpMV, a cache-friendly SpMV optimization algorithm, using a novel data convergent and adaptable 2D blocking structure. The matrix in CB-SpMV is divided into independent sub-blocks, with virtual pointers aggregating different types of intra-block da","authors_text":"Chenhao Xie*, Depei Qian, Fukai Sun, Xing Cong, Yifan Chen, Yi Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-05-18T15:06:53Z","title":"CB-SpMV:A Data Aggregating and Balance Algorithm for Cache-Friendly Block-Based SpMV on GPUs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18515","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:bbdf7fe2ccb87a23149fcfd7e1b10868b215a90662ee07977ef04c2563bc3659","target":"record","created_at":"2026-05-20T00:06:05Z","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":"acb50469546617d79a80c59e4c4b89a554fcf5c532f66567a0d725c513459f42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-05-18T15:06:53Z","title_canon_sha256":"7f8aed4c3056afd1165146a253a0dd008965e352f162b5126a95a273aaa30ea0"},"schema_version":"1.0","source":{"id":"2605.18515","kind":"arxiv","version":1}},"canonical_sha256":"492d64c6591be112a23bf5751b615312f0d434b58ce67fe641ce06d059cf01c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"492d64c6591be112a23bf5751b615312f0d434b58ce67fe641ce06d059cf01c1","first_computed_at":"2026-05-20T00:06:05.340967Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:06:05.340967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/kdCwJKTKa1+NjFQmVk7v0g3iLF8mef25S5MqbAK7anHG+uQ+c5CiCI3h5UciEZDwzR2nxm8G2vkTAEUc+3PAg==","signature_status":"signed_v1","signed_at":"2026-05-20T00:06:05.341781Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.18515","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbdf7fe2ccb87a23149fcfd7e1b10868b215a90662ee07977ef04c2563bc3659","sha256:47c4073c01f6cadf0b3886152ba798a2c2a2a0e080c2c43b17a37f8257d0ce11"],"state_sha256":"4160f0a5ebbfbe88c10e3e9b7de2432cec3c6fd06463336ba6584feca88bd9d4"}