{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:WYGFBGMLH56OZRWES4RDKOXA74","short_pith_number":"pith:WYGFBGML","canonical_record":{"source":{"id":"2608.01449","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-08-02T19:12:02Z","cross_cats_sorted":[],"title_canon_sha256":"2aedb04a629526140a09aff802a5476c2464d418a3019832ec1926c77cb921e2","abstract_canon_sha256":"1ddad8bf6c6168b537110b070d3ba273ec05eeca64c92749456518e1857bae95"},"schema_version":"1.0"},"canonical_sha256":"b60c50998b3f7cecc6c49722353ae0ff271abe024edd714755e7f454c2552be0","source":{"kind":"arxiv","id":"2608.01449","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.01449","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"arxiv_version","alias_value":"2608.01449v1","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.01449","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_12","alias_value":"WYGFBGMLH56O","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_16","alias_value":"WYGFBGMLH56OZRWE","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_8","alias_value":"WYGFBGML","created_at":"2026-08-04T02:05:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:WYGFBGMLH56OZRWES4RDKOXA74","target":"record","payload":{"canonical_record":{"source":{"id":"2608.01449","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-08-02T19:12:02Z","cross_cats_sorted":[],"title_canon_sha256":"2aedb04a629526140a09aff802a5476c2464d418a3019832ec1926c77cb921e2","abstract_canon_sha256":"1ddad8bf6c6168b537110b070d3ba273ec05eeca64c92749456518e1857bae95"},"schema_version":"1.0"},"canonical_sha256":"b60c50998b3f7cecc6c49722353ae0ff271abe024edd714755e7f454c2552be0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-04T02:05:14.332657Z","signature_b64":"2+Z2OFjnvcx6tR5gDSbXQNXQORKlEsLc/1Eq8HJS3T5pJ1yk6jzvLf9mYNpGmQOBpfEla2jwwrUT8m3zdMbqAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b60c50998b3f7cecc6c49722353ae0ff271abe024edd714755e7f454c2552be0","last_reissued_at":"2026-08-04T02:05:14.330975Z","signature_status":"signed_v1","first_computed_at":"2026-08-04T02:05:14.330975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.01449","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":"2026-08-04T02:05:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kJUNq/16CaihFGvieJHLv25nNse3Y1YtwRZc8+E3yIbUtbgWoyc5E5RUyilELq3M9OQlRntzhi66RzRWztJnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:11:51.411716Z"},"content_sha256":"88fe9b6a3c4a573b65d79458d2aa8b8227aed600086b4261a36f0b3375264a01","schema_version":"1.0","event_id":"sha256:88fe9b6a3c4a573b65d79458d2aa8b8227aed600086b4261a36f0b3375264a01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:WYGFBGMLH56OZRWES4RDKOXA74","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NIXT: A NCCL Inspector Exporter Tool for Observability of Collective Communication in Large Model Training","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Daniel Wong, Jason Sewall, Laxmi Bhuyan, Pasha Shamis, Sirshak Das, Ziyang Jia","submitted_at":"2026-08-02T19:12:02Z","abstract_excerpt":"As machine learning workloads scale, it is increasingly important to gain more observability into the performance of collective communication to easily identify performance vari- ations and accelerate root cause identification. Towards this goal, the Nvidia Collective Communication Library (NCCL) introduced NCCL Inspector, a profiler plugin that provides lightweight and continuous reporting of NCCL communication performance statistics. However, the large volume of data collected by NCCL Inspector can be difficult to assess and to extract actionable insights from. This paper presents NIXT, a NC"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.01449","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2608.01449/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-08-04T02:05:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"weUAbjeefYQnA+QRN+P9rurLBwWbAkubGl8R2KsRG1hZ3Wrm0BubPR7zgsxzhi9Gx6d5NZFGkKe+amAZiBoHAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:11:51.412642Z"},"content_sha256":"c4112771300273f55aca3a5639bcf06b2bd3febcf2d107ecb041e1c75c5ea099","schema_version":"1.0","event_id":"sha256:c4112771300273f55aca3a5639bcf06b2bd3febcf2d107ecb041e1c75c5ea099"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WYGFBGMLH56OZRWES4RDKOXA74/bundle.json","state_url":"https://pith.science/pith/WYGFBGMLH56OZRWES4RDKOXA74/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WYGFBGMLH56OZRWES4RDKOXA74/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":"2026-08-10T12:11:51Z","links":{"resolver":"https://pith.science/pith/WYGFBGMLH56OZRWES4RDKOXA74","bundle":"https://pith.science/pith/WYGFBGMLH56OZRWES4RDKOXA74/bundle.json","state":"https://pith.science/pith/WYGFBGMLH56OZRWES4RDKOXA74/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WYGFBGMLH56OZRWES4RDKOXA74/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WYGFBGMLH56OZRWES4RDKOXA74","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":"1ddad8bf6c6168b537110b070d3ba273ec05eeca64c92749456518e1857bae95","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-08-02T19:12:02Z","title_canon_sha256":"2aedb04a629526140a09aff802a5476c2464d418a3019832ec1926c77cb921e2"},"schema_version":"1.0","source":{"id":"2608.01449","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.01449","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"arxiv_version","alias_value":"2608.01449v1","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.01449","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_12","alias_value":"WYGFBGMLH56O","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_16","alias_value":"WYGFBGMLH56OZRWE","created_at":"2026-08-04T02:05:14Z"},{"alias_kind":"pith_short_8","alias_value":"WYGFBGML","created_at":"2026-08-04T02:05:14Z"}],"graph_snapshots":[{"event_id":"sha256:c4112771300273f55aca3a5639bcf06b2bd3febcf2d107ecb041e1c75c5ea099","target":"graph","created_at":"2026-08-04T02:05:14Z","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/2608.01449/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As machine learning workloads scale, it is increasingly important to gain more observability into the performance of collective communication to easily identify performance vari- ations and accelerate root cause identification. Towards this goal, the Nvidia Collective Communication Library (NCCL) introduced NCCL Inspector, a profiler plugin that provides lightweight and continuous reporting of NCCL communication performance statistics. However, the large volume of data collected by NCCL Inspector can be difficult to assess and to extract actionable insights from. This paper presents NIXT, a NC","authors_text":"Daniel Wong, Jason Sewall, Laxmi Bhuyan, Pasha Shamis, Sirshak Das, Ziyang Jia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-08-02T19:12:02Z","title":"NIXT: A NCCL Inspector Exporter Tool for Observability of Collective Communication in Large Model Training"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.01449","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":"sha256:88fe9b6a3c4a573b65d79458d2aa8b8227aed600086b4261a36f0b3375264a01","target":"record","created_at":"2026-08-04T02:05:14Z","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":"1ddad8bf6c6168b537110b070d3ba273ec05eeca64c92749456518e1857bae95","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-08-02T19:12:02Z","title_canon_sha256":"2aedb04a629526140a09aff802a5476c2464d418a3019832ec1926c77cb921e2"},"schema_version":"1.0","source":{"id":"2608.01449","kind":"arxiv","version":1}},"canonical_sha256":"b60c50998b3f7cecc6c49722353ae0ff271abe024edd714755e7f454c2552be0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b60c50998b3f7cecc6c49722353ae0ff271abe024edd714755e7f454c2552be0","first_computed_at":"2026-08-04T02:05:14.330975Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T02:05:14.330975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2+Z2OFjnvcx6tR5gDSbXQNXQORKlEsLc/1Eq8HJS3T5pJ1yk6jzvLf9mYNpGmQOBpfEla2jwwrUT8m3zdMbqAw==","signature_status":"signed_v1","signed_at":"2026-08-04T02:05:14.332657Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.01449","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88fe9b6a3c4a573b65d79458d2aa8b8227aed600086b4261a36f0b3375264a01","sha256:c4112771300273f55aca3a5639bcf06b2bd3febcf2d107ecb041e1c75c5ea099"],"state_sha256":"224132de0db836897279e0eb5c9db0d1699d8a6a3137aa4a406f337dba7e47e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6GF285InbWrJec3/FLYwDls3eHoN+zwntLCivfRdTr1M3hpEmZU420+ri/W5TfiLkXeNTAN/DE/HLW29Cg89Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T12:11:51.418222Z","bundle_sha256":"6774edd5967efe3def93017dab1ae3e8bba2fca17625f12dff8ed10bfdeb2e90"}}