{"id":"https://openalex.org/W2046692308","doi":"https://doi.org/10.1137/130920642","title":"Multicore Performance of Block Algebraic Iterative Reconstruction Methods","display_name":"Multicore Performance of Block Algebraic Iterative Reconstruction Methods","publication_year":2014,"publication_date":"2014-01-01","ids":{"openalex":"https://openalex.org/W2046692308","doi":"https://doi.org/10.1137/130920642","mag":"2046692308"},"language":"en","primary_location":{"id":"doi:10.1137/130920642","is_oa":false,"landing_page_url":"https://doi.org/10.1137/130920642","pdf_url":null,"source":{"id":"https://openalex.org/S165512578","display_name":"SIAM Journal on Scientific Computing","issn_l":"1064-8275","issn":["1064-8275","1095-7197"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Scientific Computing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://orbit.dtu.dk/en/publications/7e564afc-6b55-4de8-8eb6-b082af875acd","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103191639","display_name":"Hans Henrik Brandenborg S\u00f8rensen","orcid":"https://orcid.org/0009-0008-5166-3468"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Hans Henrik B. S\u00f8rensen","raw_affiliation_strings":["Department of Applied Mathematics and Computer Science"],"affiliations":[{"raw_affiliation_string":"Department of Applied Mathematics and Computer Science","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5039737516","display_name":"Per Christian Hansen","orcid":"https://orcid.org/0000-0002-7333-7216"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Per Christian Hansen","raw_affiliation_strings":["Department of Applied Mathematics and Computer Science"],"affiliations":[{"raw_affiliation_string":"Department of Applied Mathematics and Computer Science","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5103191639"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.8852,"has_fulltext":false,"cited_by_count":28,"citation_normalized_percentile":{"value":0.84817689,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"36","issue":"5","first_page":"C524","last_page":"C546"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10522","display_name":"Medical Imaging Techniques and Applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10522","display_name":"Medical Imaging Techniques and Applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11993","display_name":"Atomic and Subatomic Physics Research","score":0.9957000017166138,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/block","display_name":"Block (permutation group theory)","score":0.7700389623641968},{"id":"https://openalex.org/keywords/algebraic-reconstruction-technique","display_name":"Algebraic Reconstruction Technique","score":0.6618985533714294},{"id":"https://openalex.org/keywords/relaxation","display_name":"Relaxation (psychology)","score":0.6000856161117554},{"id":"https://openalex.org/keywords/iterative-method","display_name":"Iterative method","score":0.5841233730316162},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5413323640823364},{"id":"https://openalex.org/keywords/multi-core-processor","display_name":"Multi-core processor","score":0.5401285290718079},{"id":"https://openalex.org/keywords/iterative-reconstruction","display_name":"Iterative reconstruction","score":0.515903115272522},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5150129795074463},{"id":"https://openalex.org/keywords/algebraic-number","display_name":"Algebraic number","score":0.49718931317329407},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.46554622054100037},{"id":"https://openalex.org/keywords/linear-system","display_name":"Linear system","score":0.43366289138793945},{"id":"https://openalex.org/keywords/linear-algebra","display_name":"Linear algebra","score":0.4318256378173828},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3707503080368042},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.35273879766464233},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.3110104501247406},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.13652831315994263}],"concepts":[{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.7700389623641968},{"id":"https://openalex.org/C206654267","wikidata":"https://www.wikidata.org/wiki/Q4723986","display_name":"Algebraic Reconstruction Technique","level":3,"score":0.6618985533714294},{"id":"https://openalex.org/C2776029896","wikidata":"https://www.wikidata.org/wiki/Q3935810","display_name":"Relaxation (psychology)","level":2,"score":0.6000856161117554},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.5841233730316162},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5413323640823364},{"id":"https://openalex.org/C78766204","wikidata":"https://www.wikidata.org/wiki/Q555032","display_name":"Multi-core processor","level":2,"score":0.5401285290718079},{"id":"https://openalex.org/C141379421","wikidata":"https://www.wikidata.org/wiki/Q6094427","display_name":"Iterative reconstruction","level":2,"score":0.515903115272522},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5150129795074463},{"id":"https://openalex.org/C9376300","wikidata":"https://www.wikidata.org/wiki/Q168817","display_name":"Algebraic number","level":2,"score":0.49718931317329407},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.46554622054100037},{"id":"https://openalex.org/C6802819","wikidata":"https://www.wikidata.org/wiki/Q1072174","display_name":"Linear system","level":2,"score":0.43366289138793945},{"id":"https://openalex.org/C139352143","wikidata":"https://www.wikidata.org/wiki/Q82571","display_name":"Linear algebra","level":2,"score":0.4318256378173828},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3707503080368042},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.35273879766464233},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.3110104501247406},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.13652831315994263},{"id":"https://openalex.org/C77805123","wikidata":"https://www.wikidata.org/wiki/Q161272","display_name":"Social psychology","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1137/130920642","is_oa":false,"landing_page_url":"https://doi.org/10.1137/130920642","pdf_url":null,"source":{"id":"https://openalex.org/S165512578","display_name":"SIAM Journal on Scientific Computing","issn_l":"1064-8275","issn":["1064-8275","1095-7197"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Scientific Computing","raw_type":"journal-article"},{"id":"pmh:oai:pure.atira.dk:publications/7e564afc-6b55-4de8-8eb6-b082af875acd","is_oa":true,"landing_page_url":"https://orbit.dtu.dk/en/publications/7e564afc-6b55-4de8-8eb6-b082af875acd","pdf_url":null,"source":{"id":"https://openalex.org/S4306400705","display_name":"Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I96673099","host_organization_name":"Technical University of Denmark","host_organization_lineage":["https://openalex.org/I96673099"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"S\u00f8rensen , H H B &amp; Hansen , P C 2014 , ' Multicore Performance of Block Algebraic Iterative Reconstruction Methods ' , S I A M Journal on Scientific Computing , vol. 36 , no. 5 , pp. C524-C546 . https://doi.org/10.1137/130920642","raw_type":"article"}],"best_oa_location":{"id":"pmh:oai:pure.atira.dk:publications/7e564afc-6b55-4de8-8eb6-b082af875acd","is_oa":true,"landing_page_url":"https://orbit.dtu.dk/en/publications/7e564afc-6b55-4de8-8eb6-b082af875acd","pdf_url":null,"source":{"id":"https://openalex.org/S4306400705","display_name":"Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I96673099","host_organization_name":"Technical University of Denmark","host_organization_lineage":["https://openalex.org/I96673099"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"S\u00f8rensen , H H B &amp; Hansen , P C 2014 , ' Multicore Performance of Block Algebraic Iterative Reconstruction Methods ' , S I A M Journal on Scientific Computing , vol. 36 , no. 5 , pp. C524-C546 . https://doi.org/10.1137/130920642","raw_type":"article"},"sustainable_development_goals":[{"score":0.5600000023841858,"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":43,"referenced_works":["https://openalex.org/W131559905","https://openalex.org/W292488958","https://openalex.org/W1514248469","https://openalex.org/W1515429414","https://openalex.org/W1516786830","https://openalex.org/W1520261777","https://openalex.org/W1570089119","https://openalex.org/W1741578612","https://openalex.org/W1888890775","https://openalex.org/W1965018134","https://openalex.org/W1975826938","https://openalex.org/W1976716626","https://openalex.org/W1977769089","https://openalex.org/W1979531523","https://openalex.org/W1983538775","https://openalex.org/W1990919278","https://openalex.org/W1995886932","https://openalex.org/W1996565005","https://openalex.org/W1997074985","https://openalex.org/W1999841302","https://openalex.org/W2005836623","https://openalex.org/W2025424390","https://openalex.org/W2032357669","https://openalex.org/W2046470130","https://openalex.org/W2048305372","https://openalex.org/W2053342145","https://openalex.org/W2058583833","https://openalex.org/W2087111693","https://openalex.org/W2095359242","https://openalex.org/W2100277249","https://openalex.org/W2108505299","https://openalex.org/W2111152057","https://openalex.org/W2124541940","https://openalex.org/W2126720069","https://openalex.org/W2135294617","https://openalex.org/W2145801311","https://openalex.org/W2147388225","https://openalex.org/W2152522084","https://openalex.org/W2159909156","https://openalex.org/W2170510629","https://openalex.org/W2171943642","https://openalex.org/W2535843351","https://openalex.org/W4240518936"],"related_works":["https://openalex.org/W170151271","https://openalex.org/W1995230427","https://openalex.org/W2990075560","https://openalex.org/W35509000","https://openalex.org/W2348306544","https://openalex.org/W1972985034","https://openalex.org/W4231065235","https://openalex.org/W2154744699","https://openalex.org/W2090411925","https://openalex.org/W2107386309"],"abstract_inverted_index":{"Algebraic":[0],"iterative":[1,29],"methods":[2,70,117],"are":[3,52,118],"routinely":[4],"used":[5],"for":[6,93,121,158],"solving":[7],"the":[8,21,27,49,56,62,81,104,129,132,146,151,161],"ill-posed":[9],"sparse":[10],"linear":[11,50],"systems":[12],"arising":[13],"in":[14,77,83,96,142],"tomographic":[15],"image":[16],"reconstruction.":[17],"Here":[18],"we":[19,136],"consider":[20],"algebraic":[22],"reconstruction":[23,30],"technique":[24],"(ART)":[25],"and":[26,87,98],"simultaneous":[28],"techniques":[31],"(SIRT),":[32],"both":[33],"of":[34,41,48,59,66,109,131],"which":[35,115],"rely":[36],"on":[37,45,123],"semiconvergence.":[38,153],"Block":[39],"versions":[40],"these":[42,101],"methods,":[43,135],"based":[44],"a":[46,84,91,138],"partitioning":[47],"system,":[51],"able":[53],"to":[54,113,150],"combine":[55,100],"fast":[57],"semiconvergence":[58],"ART":[60],"with":[61],"better":[63],"multicore":[64,125,159],"properties":[65],"SIRT.":[67],"These":[68],"block":[69,95,116,134],"separate":[71],"into":[72],"two":[73],"classes:":[74],"those":[75,88],"that,":[76],"each":[78,94,143],"iteration,":[79],"access":[80],"blocks":[82],"sequential":[85,162],"manner,":[86],"that":[89,148,157],"compute":[90],"result":[92],"parallel":[97],"then":[99],"results":[102,155],"before":[103],"next":[105],"iteration.":[106],"The":[107],"goal":[108],"this":[110],"work":[111],"is":[112,164],"demonstrate":[114],"best":[119],"suited":[120],"implementation":[122],"modern":[124],"computers.":[126],"To":[127],"compare":[128],"performance":[130],"different":[133],"use":[137],"fixed":[139],"relaxation":[140],"parameter":[141],"method,":[144],"namely,":[145],"one":[147],"leads":[149],"fastest":[152],"Computational":[154],"show":[156],"computers,":[160],"approach":[163],"preferable.":[165]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":4},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}
