{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:RFDAMS37WCWSMYGBLYINIT7MAE","short_pith_number":"pith:RFDAMS37","canonical_record":{"source":{"id":"1505.07271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-27T11:43:58Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"dc683fbb38d9735fbb78f00a439f631c66b6a75d047f6e6638fe29785955a6aa","abstract_canon_sha256":"5fff40946b30f94bf99bfe7de38ce6194e0a5718a18bfdf2c4b14cc06aa9f849"},"schema_version":"1.0"},"canonical_sha256":"8946064b7fb0ad2660c15e10d44fec0106d920cb7e771b98fae1a4e1fbb2622c","source":{"kind":"arxiv","id":"1505.07271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07271","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07271v1","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07271","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"pith_short_12","alias_value":"RFDAMS37WCWS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RFDAMS37WCWSMYGB","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RFDAMS37","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:RFDAMS37WCWSMYGBLYINIT7MAE","target":"record","payload":{"canonical_record":{"source":{"id":"1505.07271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-27T11:43:58Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"dc683fbb38d9735fbb78f00a439f631c66b6a75d047f6e6638fe29785955a6aa","abstract_canon_sha256":"5fff40946b30f94bf99bfe7de38ce6194e0a5718a18bfdf2c4b14cc06aa9f849"},"schema_version":"1.0"},"canonical_sha256":"8946064b7fb0ad2660c15e10d44fec0106d920cb7e771b98fae1a4e1fbb2622c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:55.840659Z","signature_b64":"xPOxiJxUIV+5rvZ0lBbzTLD1oD4ipqytVkNtHAXaWZDiU2EAUYOlG83lcmvWoi7GMQsT9Gy1RjbYbmJPO4UmAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8946064b7fb0ad2660c15e10d44fec0106d920cb7e771b98fae1a4e1fbb2622c","last_reissued_at":"2026-05-18T01:09:55.839768Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:55.839768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.07271","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":"2026-05-18T01:09:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XfMds2sLthqiVEUVcSYDh9j7CGm513dJ0qb48aUtAAQz83+wZx4uiC9koKMnnWN1WnHA8WqbGwfH5rQ3sPv4Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:37:08.646975Z"},"content_sha256":"8de61f5f62cdaa1eba92d7d2b8d101b2f9418704f4d798d26d857f18f90e2464","schema_version":"1.0","event_id":"sha256:8de61f5f62cdaa1eba92d7d2b8d101b2f9418704f4d798d26d857f18f90e2464"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:RFDAMS37WCWSMYGBLYINIT7MAE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Particle-in-Cell Laser-Plasma Simulation on Xeon Phi Coprocessors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"physics.comp-ph","authors_text":"A.A. Gonoskov, A.V. Korzhimanov, E.S. Efimenko, I.A. Surmin, I.B. Meyerov, S.I. Bastrakov","submitted_at":"2015-05-27T11:43:58Z","abstract_excerpt":"This paper concerns development of a high-performance implementation of the Particle-in-Cell method for plasma simulation on Intel Xeon Phi coprocessors. We discuss suitability of the method for Xeon Phi architecture and present our experience of porting and optimization of the existing parallel Particle-in-Cell code PICADOR. Direct porting with no code modification gives performance on Xeon Phi close to 8-core CPU on a benchmark problem with 50 particles per cell. We demonstrate step-by-step application of optimization techniques such as improving data locality, enhancing parallelization effi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07271","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":"2026-05-18T01:09:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ie9ixrJpUzyXkIL5yPaewhOavdXr9wTtfdc6pQRSBczIZx51/bp5l4nvwJkHpC396NqRYB+dfajkXGrRLicYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:37:08.647344Z"},"content_sha256":"ef88ed6f3ef6a329c0785822b5ae06a01ea979972c336ce5e3db5a6f32d41a09","schema_version":"1.0","event_id":"sha256:ef88ed6f3ef6a329c0785822b5ae06a01ea979972c336ce5e3db5a6f32d41a09"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RFDAMS37WCWSMYGBLYINIT7MAE/bundle.json","state_url":"https://pith.science/pith/RFDAMS37WCWSMYGBLYINIT7MAE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RFDAMS37WCWSMYGBLYINIT7MAE/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":"2026-06-02T17:37:08Z","links":{"resolver":"https://pith.science/pith/RFDAMS37WCWSMYGBLYINIT7MAE","bundle":"https://pith.science/pith/RFDAMS37WCWSMYGBLYINIT7MAE/bundle.json","state":"https://pith.science/pith/RFDAMS37WCWSMYGBLYINIT7MAE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RFDAMS37WCWSMYGBLYINIT7MAE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RFDAMS37WCWSMYGBLYINIT7MAE","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":"5fff40946b30f94bf99bfe7de38ce6194e0a5718a18bfdf2c4b14cc06aa9f849","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-27T11:43:58Z","title_canon_sha256":"dc683fbb38d9735fbb78f00a439f631c66b6a75d047f6e6638fe29785955a6aa"},"schema_version":"1.0","source":{"id":"1505.07271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07271","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07271v1","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07271","created_at":"2026-05-18T01:09:55Z"},{"alias_kind":"pith_short_12","alias_value":"RFDAMS37WCWS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RFDAMS37WCWSMYGB","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RFDAMS37","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:ef88ed6f3ef6a329c0785822b5ae06a01ea979972c336ce5e3db5a6f32d41a09","target":"graph","created_at":"2026-05-18T01:09:55Z","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":"This paper concerns development of a high-performance implementation of the Particle-in-Cell method for plasma simulation on Intel Xeon Phi coprocessors. We discuss suitability of the method for Xeon Phi architecture and present our experience of porting and optimization of the existing parallel Particle-in-Cell code PICADOR. Direct porting with no code modification gives performance on Xeon Phi close to 8-core CPU on a benchmark problem with 50 particles per cell. We demonstrate step-by-step application of optimization techniques such as improving data locality, enhancing parallelization effi","authors_text":"A.A. Gonoskov, A.V. Korzhimanov, E.S. Efimenko, I.A. Surmin, I.B. Meyerov, S.I. Bastrakov","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-27T11:43:58Z","title":"Particle-in-Cell Laser-Plasma Simulation on Xeon Phi Coprocessors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07271","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":"sha256:8de61f5f62cdaa1eba92d7d2b8d101b2f9418704f4d798d26d857f18f90e2464","target":"record","created_at":"2026-05-18T01:09:55Z","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":"5fff40946b30f94bf99bfe7de38ce6194e0a5718a18bfdf2c4b14cc06aa9f849","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-27T11:43:58Z","title_canon_sha256":"dc683fbb38d9735fbb78f00a439f631c66b6a75d047f6e6638fe29785955a6aa"},"schema_version":"1.0","source":{"id":"1505.07271","kind":"arxiv","version":1}},"canonical_sha256":"8946064b7fb0ad2660c15e10d44fec0106d920cb7e771b98fae1a4e1fbb2622c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8946064b7fb0ad2660c15e10d44fec0106d920cb7e771b98fae1a4e1fbb2622c","first_computed_at":"2026-05-18T01:09:55.839768Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:55.839768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xPOxiJxUIV+5rvZ0lBbzTLD1oD4ipqytVkNtHAXaWZDiU2EAUYOlG83lcmvWoi7GMQsT9Gy1RjbYbmJPO4UmAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:55.840659Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.07271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8de61f5f62cdaa1eba92d7d2b8d101b2f9418704f4d798d26d857f18f90e2464","sha256:ef88ed6f3ef6a329c0785822b5ae06a01ea979972c336ce5e3db5a6f32d41a09"],"state_sha256":"8f0893ebcf1937beff6cca478c7e086725e1e5a88f31fdcf5ca8a13e30ab9701"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8+f8uGyU0LOe8r3Iin1KgDYWvXMD0tTTnZBKwNIBDWsqtASEZgvp9YhrJ+wEM3OhP1MBGBnhZmO3Rx6M9QPBCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T17:37:08.649471Z","bundle_sha256":"72671af88699b797ffab346e15d83b7373a14e57f46e2ff576330ec26e3e3ba8"}}