{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:BG5IX6LE76VDFQBBWM6BQCRPWR","short_pith_number":"pith:BG5IX6LE","canonical_record":{"source":{"id":"1710.09745","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2017-10-26T15:04:25Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"e468893ee8f11563ee9e7a010afbbe9f4ea94cbe75df9538af1765823a19d3bc","abstract_canon_sha256":"9d63707a6e61388594f92c35ebbcc85a7a73201532f4af02b18c546aeb58317f"},"schema_version":"1.0"},"canonical_sha256":"09ba8bf964ffaa32c021b33c180a2fb443182c26df3d91b17128f8769bea9041","source":{"kind":"arxiv","id":"1710.09745","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09745","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09745v2","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09745","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"pith_short_12","alias_value":"BG5IX6LE76VD","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BG5IX6LE76VDFQBB","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BG5IX6LE","created_at":"2026-05-18T12:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:BG5IX6LE76VDFQBBWM6BQCRPWR","target":"record","payload":{"canonical_record":{"source":{"id":"1710.09745","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2017-10-26T15:04:25Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"e468893ee8f11563ee9e7a010afbbe9f4ea94cbe75df9538af1765823a19d3bc","abstract_canon_sha256":"9d63707a6e61388594f92c35ebbcc85a7a73201532f4af02b18c546aeb58317f"},"schema_version":"1.0"},"canonical_sha256":"09ba8bf964ffaa32c021b33c180a2fb443182c26df3d91b17128f8769bea9041","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:36.299036Z","signature_b64":"XLzGDbvrjgey+u1F0F2YytGWtLKE7Ji/ysZpiy6mCJtyqZxBDjQdSaE2JYAgg/FQpQJbXCw8KFKup4cpXYgmCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09ba8bf964ffaa32c021b33c180a2fb443182c26df3d91b17128f8769bea9041","last_reissued_at":"2026-05-18T00:08:36.298493Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:36.298493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.09745","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:08:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VypSkBteLWC7XHuxNSYye4iXsd1fGTZAXpb6iyA3JS1k7lntP0wmG+Vb/TwE3LeUbRqhSy38Mo3qGobCVvpnBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:22:44.466645Z"},"content_sha256":"4b2f44ab070f39a371fa769767d3c9afe4c1d6dcc58c0b0ddf38be5eb6528a2c","schema_version":"1.0","event_id":"sha256:4b2f44ab070f39a371fa769767d3c9afe4c1d6dcc58c0b0ddf38be5eb6528a2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:BG5IX6LE76VDFQBBWM6BQCRPWR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pushing Memory Bandwidth Limitations Through Efficient Implementations of Block-Krylov Space Solvers on GPUs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"hep-lat","authors_text":"Alejandro Vaquero, Alexei Strelchenko, Evan Weinberg, M. A. Clark, Mathias Wagner","submitted_at":"2017-10-26T15:04:25Z","abstract_excerpt":"Lattice quantum chromodynamics simulations in nuclear physics have benefited from a tremendous number of algorithmic advances such as multigrid and eigenvector deflation. These improve the time to solution but do not alleviate the intrinsic memory-bandwidth constraints of the matrix-vector operation dominating iterative solvers. Batching this operation for multiple vectors and exploiting cache and register blocking can yield a super-linear speed up. Block-Krylov solvers can naturally take advantage of such batched matrix-vector operations, further reducing the iterations to solution by sharing"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09745","kind":"arxiv","version":2},"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":"2026-05-18T00:08:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AT4SchAOzVEOPeVy7P9SvAeYWkx+Ih4aSzBllUwe0iI4/IVCgyBxI4lPgBJATRf8ol8Zdj5B4Qr0jcJ3YuAsBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:22:44.467122Z"},"content_sha256":"885c0af544dd32847434918fc1d4ca0d9c7797951a6ba7e53c56c7ff4f8af7c4","schema_version":"1.0","event_id":"sha256:885c0af544dd32847434918fc1d4ca0d9c7797951a6ba7e53c56c7ff4f8af7c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/bundle.json","state_url":"https://pith.science/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/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":"2026-05-25T15:22:44Z","links":{"resolver":"https://pith.science/pith/BG5IX6LE76VDFQBBWM6BQCRPWR","bundle":"https://pith.science/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/bundle.json","state":"https://pith.science/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BG5IX6LE76VDFQBBWM6BQCRPWR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BG5IX6LE76VDFQBBWM6BQCRPWR","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":"9d63707a6e61388594f92c35ebbcc85a7a73201532f4af02b18c546aeb58317f","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2017-10-26T15:04:25Z","title_canon_sha256":"e468893ee8f11563ee9e7a010afbbe9f4ea94cbe75df9538af1765823a19d3bc"},"schema_version":"1.0","source":{"id":"1710.09745","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09745","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09745v2","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09745","created_at":"2026-05-18T00:08:36Z"},{"alias_kind":"pith_short_12","alias_value":"BG5IX6LE76VD","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BG5IX6LE76VDFQBB","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BG5IX6LE","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:885c0af544dd32847434918fc1d4ca0d9c7797951a6ba7e53c56c7ff4f8af7c4","target":"graph","created_at":"2026-05-18T00:08:36Z","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":"Lattice quantum chromodynamics simulations in nuclear physics have benefited from a tremendous number of algorithmic advances such as multigrid and eigenvector deflation. These improve the time to solution but do not alleviate the intrinsic memory-bandwidth constraints of the matrix-vector operation dominating iterative solvers. Batching this operation for multiple vectors and exploiting cache and register blocking can yield a super-linear speed up. Block-Krylov solvers can naturally take advantage of such batched matrix-vector operations, further reducing the iterations to solution by sharing","authors_text":"Alejandro Vaquero, Alexei Strelchenko, Evan Weinberg, M. A. Clark, Mathias Wagner","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2017-10-26T15:04:25Z","title":"Pushing Memory Bandwidth Limitations Through Efficient Implementations of Block-Krylov Space Solvers on GPUs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09745","kind":"arxiv","version":2},"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":"sha256:4b2f44ab070f39a371fa769767d3c9afe4c1d6dcc58c0b0ddf38be5eb6528a2c","target":"record","created_at":"2026-05-18T00:08:36Z","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":"9d63707a6e61388594f92c35ebbcc85a7a73201532f4af02b18c546aeb58317f","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2017-10-26T15:04:25Z","title_canon_sha256":"e468893ee8f11563ee9e7a010afbbe9f4ea94cbe75df9538af1765823a19d3bc"},"schema_version":"1.0","source":{"id":"1710.09745","kind":"arxiv","version":2}},"canonical_sha256":"09ba8bf964ffaa32c021b33c180a2fb443182c26df3d91b17128f8769bea9041","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09ba8bf964ffaa32c021b33c180a2fb443182c26df3d91b17128f8769bea9041","first_computed_at":"2026-05-18T00:08:36.298493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:36.298493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XLzGDbvrjgey+u1F0F2YytGWtLKE7Ji/ysZpiy6mCJtyqZxBDjQdSaE2JYAgg/FQpQJbXCw8KFKup4cpXYgmCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:36.299036Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.09745","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b2f44ab070f39a371fa769767d3c9afe4c1d6dcc58c0b0ddf38be5eb6528a2c","sha256:885c0af544dd32847434918fc1d4ca0d9c7797951a6ba7e53c56c7ff4f8af7c4"],"state_sha256":"eff25a385859b027fac6447468282362fe0870d2a91f6005c45a29214a6a05ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvFv2qGWbDQZkR4puL+sHQpd9oSvxO+grrlpr7ZfrEmLkPAoYGwvZ7q9y3kCvizuvpa/OUsqf81W9uxU44lMBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:22:44.470630Z","bundle_sha256":"692c94cdd8b2110bf57d981cf4f025f7ce8df2d4e938367166d8d283c44331a8"}}