{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:JIVMKWGQY4BJDOPC6PXYXKWOAV","short_pith_number":"pith:JIVMKWGQ","canonical_record":{"source":{"id":"2606.12850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-11T03:30:46Z","cross_cats_sorted":[],"title_canon_sha256":"1da604503a7912c5173273a59f581de13cca713698338aa0ecea3a9ee1fe3151","abstract_canon_sha256":"2d287d3b11334827e33e75780e019c350967c06530342839139019f93db830f5"},"schema_version":"1.0"},"canonical_sha256":"4a2ac558d0c70291b9e2f3ef8baace0549cd23b4242b01adbc8efcd2069ca67d","source":{"kind":"arxiv","id":"2606.12850","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.12850","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"arxiv_version","alias_value":"2606.12850v1","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.12850","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_12","alias_value":"JIVMKWGQY4BJ","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_16","alias_value":"JIVMKWGQY4BJDOPC","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_8","alias_value":"JIVMKWGQ","created_at":"2026-06-12T01:08:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:JIVMKWGQY4BJDOPC6PXYXKWOAV","target":"record","payload":{"canonical_record":{"source":{"id":"2606.12850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-11T03:30:46Z","cross_cats_sorted":[],"title_canon_sha256":"1da604503a7912c5173273a59f581de13cca713698338aa0ecea3a9ee1fe3151","abstract_canon_sha256":"2d287d3b11334827e33e75780e019c350967c06530342839139019f93db830f5"},"schema_version":"1.0"},"canonical_sha256":"4a2ac558d0c70291b9e2f3ef8baace0549cd23b4242b01adbc8efcd2069ca67d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-12T01:08:54.269344Z","signature_b64":"Wy+LJ5/1n5DWwS6mBXzj21TKnq6/Vcl4LTEtuToljBzgv/O0bPBQt07jPVFhxW8qjtnLaV1FYtfOpT5Lfy5HCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a2ac558d0c70291b9e2f3ef8baace0549cd23b4242b01adbc8efcd2069ca67d","last_reissued_at":"2026-06-12T01:08:54.268485Z","signature_status":"signed_v1","first_computed_at":"2026-06-12T01:08:54.268485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.12850","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":"2026-06-12T01:08:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9TOuZMwosJ2BHnxpuEsJv9moFj7Q/aihogmMuOOw5bFVwSctZEjamyMQtcz9YhQJ8sCbSpOup0GpqNgzWA4bCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T11:39:09.205678Z"},"content_sha256":"8916d7a52c0625a30ba8cbcf3b46e38d56fc7f9ebeb2ee8699c90d7a5f8327a9","schema_version":"1.0","event_id":"sha256:8916d7a52c0625a30ba8cbcf3b46e38d56fc7f9ebeb2ee8699c90d7a5f8327a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:JIVMKWGQY4BJDOPC6PXYXKWOAV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Order Spectral Element Methods for Wave Propagation on ARM Multicore CPU with SME: Optimizations and Implications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Guangwen Yang, Lin Gan, Tianqi Mao, Wei Xue, Wenqiang Wang, Wubing Wan, Yinuo Wang, Zekun Yin","submitted_at":"2026-06-11T03:30:46Z","abstract_excerpt":"Wave propagation based on the spectral element method (SEM) is a representative HPC workload, but existing SEM implementations are not well matched to emerging ARM multicore CPUs with Scalable Matrix Extension (SME). We present an SME-enabled optimization of \\textsc{SPECFEM3D} on the emerging LX2 processor that combines an SME-aware batched small-matrix kernel for SEM tensor-product operators, a memory-aware hybrid MPI+OpenMP execution scheme for limited-HBM systems, and a dispersion-based iso-accuracy study of the $(h,p)$ tradeoff. At fixed polynomial order, the optimized implementation impro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12850","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/2606.12850/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":"2026-06-12T01:08:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Q2yuoexEdRwMZI8lFUdY3gHU4S37z0VteJZAAAUdOi4BcNRRiJQq1L9ef+6I+mWrkm1JMDi+Fvv8juDWnqlCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T11:39:09.206046Z"},"content_sha256":"d83a729e8a268dc4ffd672176dbcb2036a5f13a3b2958b02678d2a7a7cccc56f","schema_version":"1.0","event_id":"sha256:d83a729e8a268dc4ffd672176dbcb2036a5f13a3b2958b02678d2a7a7cccc56f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/bundle.json","state_url":"https://pith.science/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/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":"2026-06-30T11:39:09Z","links":{"resolver":"https://pith.science/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV","bundle":"https://pith.science/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/bundle.json","state":"https://pith.science/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JIVMKWGQY4BJDOPC6PXYXKWOAV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:JIVMKWGQY4BJDOPC6PXYXKWOAV","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":"2d287d3b11334827e33e75780e019c350967c06530342839139019f93db830f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-11T03:30:46Z","title_canon_sha256":"1da604503a7912c5173273a59f581de13cca713698338aa0ecea3a9ee1fe3151"},"schema_version":"1.0","source":{"id":"2606.12850","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.12850","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"arxiv_version","alias_value":"2606.12850v1","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.12850","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_12","alias_value":"JIVMKWGQY4BJ","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_16","alias_value":"JIVMKWGQY4BJDOPC","created_at":"2026-06-12T01:08:54Z"},{"alias_kind":"pith_short_8","alias_value":"JIVMKWGQ","created_at":"2026-06-12T01:08:54Z"}],"graph_snapshots":[{"event_id":"sha256:d83a729e8a268dc4ffd672176dbcb2036a5f13a3b2958b02678d2a7a7cccc56f","target":"graph","created_at":"2026-06-12T01:08:54Z","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/2606.12850/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Wave propagation based on the spectral element method (SEM) is a representative HPC workload, but existing SEM implementations are not well matched to emerging ARM multicore CPUs with Scalable Matrix Extension (SME). We present an SME-enabled optimization of \\textsc{SPECFEM3D} on the emerging LX2 processor that combines an SME-aware batched small-matrix kernel for SEM tensor-product operators, a memory-aware hybrid MPI+OpenMP execution scheme for limited-HBM systems, and a dispersion-based iso-accuracy study of the $(h,p)$ tradeoff. At fixed polynomial order, the optimized implementation impro","authors_text":"Guangwen Yang, Lin Gan, Tianqi Mao, Wei Xue, Wenqiang Wang, Wubing Wan, Yinuo Wang, Zekun Yin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-11T03:30:46Z","title":"High-Order Spectral Element Methods for Wave Propagation on ARM Multicore CPU with SME: Optimizations and Implications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12850","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":"sha256:8916d7a52c0625a30ba8cbcf3b46e38d56fc7f9ebeb2ee8699c90d7a5f8327a9","target":"record","created_at":"2026-06-12T01:08:54Z","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":"2d287d3b11334827e33e75780e019c350967c06530342839139019f93db830f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2026-06-11T03:30:46Z","title_canon_sha256":"1da604503a7912c5173273a59f581de13cca713698338aa0ecea3a9ee1fe3151"},"schema_version":"1.0","source":{"id":"2606.12850","kind":"arxiv","version":1}},"canonical_sha256":"4a2ac558d0c70291b9e2f3ef8baace0549cd23b4242b01adbc8efcd2069ca67d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a2ac558d0c70291b9e2f3ef8baace0549cd23b4242b01adbc8efcd2069ca67d","first_computed_at":"2026-06-12T01:08:54.268485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-12T01:08:54.268485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Wy+LJ5/1n5DWwS6mBXzj21TKnq6/Vcl4LTEtuToljBzgv/O0bPBQt07jPVFhxW8qjtnLaV1FYtfOpT5Lfy5HCA==","signature_status":"signed_v1","signed_at":"2026-06-12T01:08:54.269344Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.12850","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8916d7a52c0625a30ba8cbcf3b46e38d56fc7f9ebeb2ee8699c90d7a5f8327a9","sha256:d83a729e8a268dc4ffd672176dbcb2036a5f13a3b2958b02678d2a7a7cccc56f"],"state_sha256":"3716038d1c782e0e51f601e65c1dc441d066124ede02a4ff42bd5a1dd0d52855"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Q5naW6+m8GNBPnZ2vbaOe09jPxvw9GETV//is4mKtdf1Y2s+I5vifGcPwaCCzRFwDT4bgG5Y2Md4oayfSoJCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T11:39:09.208009Z","bundle_sha256":"269eac993eec34954b7b1244e66fc42b97221a9301c412f1449f9f3e7302e83f"}}