{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NVUHW4HLPROM775SDCDE4KDO5J","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":"e80a2a81fceff1c379c00b7104ab3b10bb09e269342d01661fcede0f0c78485b","cross_cats_sorted":["cs.DC","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2013-11-07T17:00:02Z","title_canon_sha256":"b330766581d84d67efc78fe71bb062754f969142b73d4dd57f7298debee60905"},"schema_version":"1.0","source":{"id":"1311.1741","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1741","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1741v2","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1741","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"pith_short_12","alias_value":"NVUHW4HLPROM","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NVUHW4HLPROM775S","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NVUHW4HL","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:8946a2e2d9507028a5479e7010ae4859968f81b9bf8b94d7e78fe30731bec21f","target":"graph","created_at":"2026-05-18T01:46:33Z","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":"Modern Graphics Processing Units (GPUs) are now considered accelerators for general purpose computation. A tight interaction between the GPU and the interconnection network is the strategy to express the full potential on capability computing of a multi-GPU system on large HPC clusters; that is the reason why an efficient and scalable interconnect is a key technology to finally deliver GPUs for scientific HPC. In this paper we show the latest architectural and performance improvement of the APEnet+ network fabric, a FPGA-based PCIe board with 6 fully bidirectional off-board links with 34 Gbps ","authors_text":"Alessandro Lonardo, Andrea Biagioni, Davide Rossetti, Francesca Lo Cicero, Francesco Simula, Laura Tosoratto, Ottorino Frezza, Piero Vicini, Pier Stanislao Paolucci, Roberto Ammendola","cross_cats":["cs.DC","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2013-11-07T17:00:02Z","title":"Architectural improvements and 28 nm FPGA implementation of the APEnet+ 3D Torus network for hybrid HPC systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1741","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:dba1a228e47ac66f4952c099efda53720bd51500ea3acc2e4e2da704bd161123","target":"record","created_at":"2026-05-18T01:46:33Z","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":"e80a2a81fceff1c379c00b7104ab3b10bb09e269342d01661fcede0f0c78485b","cross_cats_sorted":["cs.DC","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AR","submitted_at":"2013-11-07T17:00:02Z","title_canon_sha256":"b330766581d84d67efc78fe71bb062754f969142b73d4dd57f7298debee60905"},"schema_version":"1.0","source":{"id":"1311.1741","kind":"arxiv","version":2}},"canonical_sha256":"6d687b70eb7c5ccfffb218864e286eea6007352ffc653a0141ea04b8a449380d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d687b70eb7c5ccfffb218864e286eea6007352ffc653a0141ea04b8a449380d","first_computed_at":"2026-05-18T01:46:33.206493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:33.206493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"elvf4AToNrxa5b2hsere9NyBqE5e0FuVXH517BwfOOAdnqb3h2q5C2ieoJ546V2Bjn+70HND56I8lVH4dEfjDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:33.206917Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1741","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dba1a228e47ac66f4952c099efda53720bd51500ea3acc2e4e2da704bd161123","sha256:8946a2e2d9507028a5479e7010ae4859968f81b9bf8b94d7e78fe30731bec21f"],"state_sha256":"4eb442f01309eb2be04728186a7e100a4702403737bb5e167968ec249e2affe7"}