{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:U7FE3VL2KT247JVJIFE2Z7P6NP","short_pith_number":"pith:U7FE3VL2","canonical_record":{"source":{"id":"1607.02904","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2016-07-11T11:23:04Z","cross_cats_sorted":["cs.DC","cs.MS","cs.PF"],"title_canon_sha256":"7c7e697f916598d166b7edcd90d64aac8b0fb6656812f7aa3b556343e87121bd","abstract_canon_sha256":"eb4a45ce8434c3a25b511b141b8bb8ccff0cfd16b431a0f85c55dc8b4e175a7d"},"schema_version":"1.0"},"canonical_sha256":"a7ca4dd57a54f5cfa6a94149acfdfe6bd45466cab3216d5d4e1156bea7de6d6f","source":{"kind":"arxiv","id":"1607.02904","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.02904","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"arxiv_version","alias_value":"1607.02904v1","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.02904","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"pith_short_12","alias_value":"U7FE3VL2KT24","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"U7FE3VL2KT247JVJ","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"U7FE3VL2","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:U7FE3VL2KT247JVJIFE2Z7P6NP","target":"record","payload":{"canonical_record":{"source":{"id":"1607.02904","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2016-07-11T11:23:04Z","cross_cats_sorted":["cs.DC","cs.MS","cs.PF"],"title_canon_sha256":"7c7e697f916598d166b7edcd90d64aac8b0fb6656812f7aa3b556343e87121bd","abstract_canon_sha256":"eb4a45ce8434c3a25b511b141b8bb8ccff0cfd16b431a0f85c55dc8b4e175a7d"},"schema_version":"1.0"},"canonical_sha256":"a7ca4dd57a54f5cfa6a94149acfdfe6bd45466cab3216d5d4e1156bea7de6d6f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:14.430503Z","signature_b64":"gxM0px955nxlGxItVnLgzRRrFTreXyVKTLiHQQQkAtL9SidOsjEqHzWK4O7oQ0uSz5TsOGpeEUESvukmnse6Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7ca4dd57a54f5cfa6a94149acfdfe6bd45466cab3216d5d4e1156bea7de6d6f","last_reissued_at":"2026-05-18T01:11:14.429954Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:14.429954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.02904","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":"2026-05-18T01:11:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iHOlxpFNnnliwyMQQWqRPw+oJq2YxGXgpm9wbIe3Ww8uyj+Ba+OrVc+KD/G7G8+v29Qq0wk6aEtBwZX0P64aCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:48:59.842647Z"},"content_sha256":"a8ddac2a420164f9c20416e9f10b3c2e0dc4ec4b77130bd7da893f77a66056e3","schema_version":"1.0","event_id":"sha256:a8ddac2a420164f9c20416e9f10b3c2e0dc4ec4b77130bd7da893f77a66056e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:U7FE3VL2KT247JVJIFE2Z7P6NP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Vectorization of the Tersoff Multi-Body Potential: An Exercise in Performance Portability","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC","cs.MS","cs.PF"],"primary_cat":"cs.CE","authors_text":"Ahmed E. Ismail, Markus H\\\"ohnerbach, Paolo Bientinesi","submitted_at":"2016-07-11T11:23:04Z","abstract_excerpt":"Molecular dynamics simulations, an indispensable research tool in computational chemistry and materials science, consume a significant portion of the supercomputing cycles around the world. We focus on multi-body potentials and aim at achieving performance portability. Compared with well-studied pair potentials, multibody potentials deliver increased simulation accuracy but are too complex for effective compiler optimization. Because of this, achieving cross-platform performance remains an open question. By abstracting from target architecture and computing precision, we develop a vectorizatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.02904","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":""},"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":"2026-05-18T01:11:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQPP+R+XuQT9AWm0Br7e/xdMuyZT/nWxVzZkj08e81AtnZvvKvtdidEQl+ApGxBTOsPWGM3laeuYJLVJekeLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:48:59.842986Z"},"content_sha256":"7fb5b31d6a6d3ad2e8c84cca583997dab08c7a185e89004faaa156777e212760","schema_version":"1.0","event_id":"sha256:7fb5b31d6a6d3ad2e8c84cca583997dab08c7a185e89004faaa156777e212760"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/bundle.json","state_url":"https://pith.science/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/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":"2026-06-02T20:48:59Z","links":{"resolver":"https://pith.science/pith/U7FE3VL2KT247JVJIFE2Z7P6NP","bundle":"https://pith.science/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/bundle.json","state":"https://pith.science/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7FE3VL2KT247JVJIFE2Z7P6NP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:U7FE3VL2KT247JVJIFE2Z7P6NP","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":"eb4a45ce8434c3a25b511b141b8bb8ccff0cfd16b431a0f85c55dc8b4e175a7d","cross_cats_sorted":["cs.DC","cs.MS","cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2016-07-11T11:23:04Z","title_canon_sha256":"7c7e697f916598d166b7edcd90d64aac8b0fb6656812f7aa3b556343e87121bd"},"schema_version":"1.0","source":{"id":"1607.02904","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.02904","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"arxiv_version","alias_value":"1607.02904v1","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.02904","created_at":"2026-05-18T01:11:14Z"},{"alias_kind":"pith_short_12","alias_value":"U7FE3VL2KT24","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"U7FE3VL2KT247JVJ","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"U7FE3VL2","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:7fb5b31d6a6d3ad2e8c84cca583997dab08c7a185e89004faaa156777e212760","target":"graph","created_at":"2026-05-18T01:11:14Z","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"},"paper":{"abstract_excerpt":"Molecular dynamics simulations, an indispensable research tool in computational chemistry and materials science, consume a significant portion of the supercomputing cycles around the world. We focus on multi-body potentials and aim at achieving performance portability. Compared with well-studied pair potentials, multibody potentials deliver increased simulation accuracy but are too complex for effective compiler optimization. Because of this, achieving cross-platform performance remains an open question. By abstracting from target architecture and computing precision, we develop a vectorizatio","authors_text":"Ahmed E. Ismail, Markus H\\\"ohnerbach, Paolo Bientinesi","cross_cats":["cs.DC","cs.MS","cs.PF"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2016-07-11T11:23:04Z","title":"The Vectorization of the Tersoff Multi-Body Potential: An Exercise in Performance Portability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.02904","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:a8ddac2a420164f9c20416e9f10b3c2e0dc4ec4b77130bd7da893f77a66056e3","target":"record","created_at":"2026-05-18T01:11:14Z","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":"eb4a45ce8434c3a25b511b141b8bb8ccff0cfd16b431a0f85c55dc8b4e175a7d","cross_cats_sorted":["cs.DC","cs.MS","cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2016-07-11T11:23:04Z","title_canon_sha256":"7c7e697f916598d166b7edcd90d64aac8b0fb6656812f7aa3b556343e87121bd"},"schema_version":"1.0","source":{"id":"1607.02904","kind":"arxiv","version":1}},"canonical_sha256":"a7ca4dd57a54f5cfa6a94149acfdfe6bd45466cab3216d5d4e1156bea7de6d6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7ca4dd57a54f5cfa6a94149acfdfe6bd45466cab3216d5d4e1156bea7de6d6f","first_computed_at":"2026-05-18T01:11:14.429954Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:14.429954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gxM0px955nxlGxItVnLgzRRrFTreXyVKTLiHQQQkAtL9SidOsjEqHzWK4O7oQ0uSz5TsOGpeEUESvukmnse6Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:14.430503Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.02904","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8ddac2a420164f9c20416e9f10b3c2e0dc4ec4b77130bd7da893f77a66056e3","sha256:7fb5b31d6a6d3ad2e8c84cca583997dab08c7a185e89004faaa156777e212760"],"state_sha256":"8312d0eec040f6f1b9aa6e4cd500ef993e59623884c6bef6abfd23b3306b143a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Evlz74c/OyTVb60/x3KaGY1me129hqLMI2pDA+fpAJTNtH/+/c+FkN/lohdBJyDVIfp2KMDxgmDfZ2zwj3M6DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T20:48:59.844895Z","bundle_sha256":"efbf38e79785d14fb88baa67b52eaff4511ad8e06da92ba01008bf41ae527304"}}