{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:STQ5BCYKSNAVMF5M6WYIXKQI4F","short_pith_number":"pith:STQ5BCYK","canonical_record":{"source":{"id":"2606.04415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-03T03:49:34Z","cross_cats_sorted":[],"title_canon_sha256":"b5d9a100b2db66437f4e12d5deba37d003a04b4e8e000057aba4dc4d8f1ac6cc","abstract_canon_sha256":"c5f4c803c138e396a982258a277a1b6ad84593d62f11014f53d6f9df384a8c42"},"schema_version":"1.0"},"canonical_sha256":"94e1d08b0a93415617acf5b08baa08e15a638af16691bfa00e8b991ae8e6899d","source":{"kind":"arxiv","id":"2606.04415","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04415","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04415v1","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04415","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"STQ5BCYKSNAV","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_16","alias_value":"STQ5BCYKSNAVMF5M","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_8","alias_value":"STQ5BCYK","created_at":"2026-06-04T01:09:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:STQ5BCYKSNAVMF5M6WYIXKQI4F","target":"record","payload":{"canonical_record":{"source":{"id":"2606.04415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-03T03:49:34Z","cross_cats_sorted":[],"title_canon_sha256":"b5d9a100b2db66437f4e12d5deba37d003a04b4e8e000057aba4dc4d8f1ac6cc","abstract_canon_sha256":"c5f4c803c138e396a982258a277a1b6ad84593d62f11014f53d6f9df384a8c42"},"schema_version":"1.0"},"canonical_sha256":"94e1d08b0a93415617acf5b08baa08e15a638af16691bfa00e8b991ae8e6899d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:09:07.262017Z","signature_b64":"vMya37+urrXn5N+TWASpqJUhIo4L6jzZ6PJHWBAK3mECFT0uNvhtQAWYDHlBdZgCbVObFC7FtkHp72PLcpmUBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94e1d08b0a93415617acf5b08baa08e15a638af16691bfa00e8b991ae8e6899d","last_reissued_at":"2026-06-04T01:09:07.261520Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:09:07.261520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.04415","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":"2026-06-04T01:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PDMJS68gprP0EYXMUt5ryFPw9OW3XxzKOa3Zll0u6nmYhhr7c24qjne3iNAHVxGJiHwPQ3wuTUQJyULbu2lPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:24:12.519600Z"},"content_sha256":"46b6d5b2c8bfb21233e3f76232c58a12e5e95efd33f7f7c0a43da6b55a4bfc52","schema_version":"1.0","event_id":"sha256:46b6d5b2c8bfb21233e3f76232c58a12e5e95efd33f7f7c0a43da6b55a4bfc52"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:STQ5BCYKSNAVMF5M6WYIXKQI4F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FlexNPU: Transparent NPU Virtualization for Dynamic LLM Prefill-Decode Co-location","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Chuanfei Xu, Gong Zhang, Hong Liu, Hongming Huang, Hui Zang, Jiajia Chu, Jianfeng Wang, Jiawei Qiu, Jiongjiong Gu, Lin Zhang, Mingjie Zhang, Pengfei Xia, Qijie Qiu, Weipeng Cao, Xin Yao, Yifeng Tang, Yongqiao Wang, Yuanyi Xia, Yuzhao Wang, Zhong Ming, Zhuonan Lai, Zidong Han","submitted_at":"2026-06-03T03:49:34Z","abstract_excerpt":"Modern AI serving increasingly relies on NPUs for conventional inference and large language model serving. However, current NPU deployments commonly expose physical devices directly to applications, which limits runtime control over scheduling and makes it difficult to adapt execution to phase-level workload behavior. This limitation is particularly evident in LLM serving, where the prefill phase is compute-intensive while the decode phase is often constrained by memory bandwidth and KV-cache accesses. Static prefill-decode (PD) disaggregation reduces phase interference, but can introduce reso"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04415","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/2606.04415/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":"2026-06-04T01:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YKQUUjK8roq8EWuSekupwuxREuWwarcziMAK6M+TuDbUFuRrgDkdZVLq9vHJV3x5QP1X9/IeXl+lyPe+Gj6GBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:24:12.519986Z"},"content_sha256":"0487302c61591b6b277ceb847b458d987f374b355fe6f8ccbe0ebb571a74750c","schema_version":"1.0","event_id":"sha256:0487302c61591b6b277ceb847b458d987f374b355fe6f8ccbe0ebb571a74750c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/bundle.json","state_url":"https://pith.science/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/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":"2026-06-05T15:24:12Z","links":{"resolver":"https://pith.science/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F","bundle":"https://pith.science/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/bundle.json","state":"https://pith.science/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/STQ5BCYKSNAVMF5M6WYIXKQI4F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:STQ5BCYKSNAVMF5M6WYIXKQI4F","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":"c5f4c803c138e396a982258a277a1b6ad84593d62f11014f53d6f9df384a8c42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-03T03:49:34Z","title_canon_sha256":"b5d9a100b2db66437f4e12d5deba37d003a04b4e8e000057aba4dc4d8f1ac6cc"},"schema_version":"1.0","source":{"id":"2606.04415","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04415","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04415v1","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04415","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"STQ5BCYKSNAV","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_16","alias_value":"STQ5BCYKSNAVMF5M","created_at":"2026-06-04T01:09:07Z"},{"alias_kind":"pith_short_8","alias_value":"STQ5BCYK","created_at":"2026-06-04T01:09:07Z"}],"graph_snapshots":[{"event_id":"sha256:0487302c61591b6b277ceb847b458d987f374b355fe6f8ccbe0ebb571a74750c","target":"graph","created_at":"2026-06-04T01:09:07Z","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/2606.04415/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Modern AI serving increasingly relies on NPUs for conventional inference and large language model serving. However, current NPU deployments commonly expose physical devices directly to applications, which limits runtime control over scheduling and makes it difficult to adapt execution to phase-level workload behavior. This limitation is particularly evident in LLM serving, where the prefill phase is compute-intensive while the decode phase is often constrained by memory bandwidth and KV-cache accesses. Static prefill-decode (PD) disaggregation reduces phase interference, but can introduce reso","authors_text":"Chuanfei Xu, Gong Zhang, Hong Liu, Hongming Huang, Hui Zang, Jiajia Chu, Jianfeng Wang, Jiawei Qiu, Jiongjiong Gu, Lin Zhang, Mingjie Zhang, Pengfei Xia, Qijie Qiu, Weipeng Cao, Xin Yao, Yifeng Tang, Yongqiao Wang, Yuanyi Xia, Yuzhao Wang, Zhong Ming, Zhuonan Lai, Zidong Han","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-03T03:49:34Z","title":"FlexNPU: Transparent NPU Virtualization for Dynamic LLM Prefill-Decode Co-location"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04415","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":"sha256:46b6d5b2c8bfb21233e3f76232c58a12e5e95efd33f7f7c0a43da6b55a4bfc52","target":"record","created_at":"2026-06-04T01:09:07Z","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":"c5f4c803c138e396a982258a277a1b6ad84593d62f11014f53d6f9df384a8c42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-03T03:49:34Z","title_canon_sha256":"b5d9a100b2db66437f4e12d5deba37d003a04b4e8e000057aba4dc4d8f1ac6cc"},"schema_version":"1.0","source":{"id":"2606.04415","kind":"arxiv","version":1}},"canonical_sha256":"94e1d08b0a93415617acf5b08baa08e15a638af16691bfa00e8b991ae8e6899d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94e1d08b0a93415617acf5b08baa08e15a638af16691bfa00e8b991ae8e6899d","first_computed_at":"2026-06-04T01:09:07.261520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T01:09:07.261520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vMya37+urrXn5N+TWASpqJUhIo4L6jzZ6PJHWBAK3mECFT0uNvhtQAWYDHlBdZgCbVObFC7FtkHp72PLcpmUBA==","signature_status":"signed_v1","signed_at":"2026-06-04T01:09:07.262017Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.04415","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46b6d5b2c8bfb21233e3f76232c58a12e5e95efd33f7f7c0a43da6b55a4bfc52","sha256:0487302c61591b6b277ceb847b458d987f374b355fe6f8ccbe0ebb571a74750c"],"state_sha256":"a5e9dbbb2354f65fbddb6a1dd372691085197ffcb011a560fdfaeb2343e3d377"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UZ7fshds5EW5JRjvolRWfYuyRH9HNBmBNIzFm9hluVJipOyfhKuhUFiesf5JRkX7MPyavcLqKfw745NAVYPVCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T15:24:12.522269Z","bundle_sha256":"71203c854ff7327a88cfa67742f55cff74f6eaba823271f491a4ac25ff10c2e5"}}