{"id":"https://openalex.org/W1977492904","doi":"https://doi.org/10.1145/2686882","title":"Collective Algorithms for Multiported Torus Networks","display_name":"Collective Algorithms for Multiported Torus Networks","publication_year":2015,"publication_date":"2015-02-18","ids":{"openalex":"https://openalex.org/W1977492904","doi":"https://doi.org/10.1145/2686882","mag":"1977492904"},"language":"en","primary_location":{"id":"doi:10.1145/2686882","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2686882","pdf_url":null,"source":{"id":"https://openalex.org/S2483380313","display_name":"ACM Transactions on Parallel Computing","issn_l":"2329-4949","issn":["2329-4949","2329-4957"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Parallel Computing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5091821862","display_name":"Paul Sack","orcid":null},"institutions":[{"id":"https://openalex.org/I157725225","display_name":"University of Illinois Urbana-Champaign","ror":"https://ror.org/047426m28","country_code":"US","type":"education","lineage":["https://openalex.org/I157725225"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Paul Sack","raw_affiliation_strings":["University of Illinois at Urbana-Champaign","University of Illinois at Urbana Champaign"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Illinois at Urbana-Champaign","institution_ids":["https://openalex.org/I157725225"]},{"raw_affiliation_string":"University of Illinois at Urbana Champaign","institution_ids":["https://openalex.org/I157725225"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5017241944","display_name":"William Gropp","orcid":"https://orcid.org/0000-0003-2905-3029"},"institutions":[{"id":"https://openalex.org/I157725225","display_name":"University of Illinois Urbana-Champaign","ror":"https://ror.org/047426m28","country_code":"US","type":"education","lineage":["https://openalex.org/I157725225"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"William Gropp","raw_affiliation_strings":["University of Illinois at Urbana-Champaign","University of Illinois at Urbana Champaign"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Illinois at Urbana-Champaign","institution_ids":["https://openalex.org/I157725225"]},{"raw_affiliation_string":"University of Illinois at Urbana Champaign","institution_ids":["https://openalex.org/I157725225"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I157725225"],"apc_list":null,"apc_paid":null,"fwci":0.9686,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.7798683,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"1","issue":"2","first_page":"1","last_page":"33"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10829","display_name":"Interconnection Networks and Systems","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.9941999912261963,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/torus","display_name":"Torus","score":0.8833353519439697},{"id":"https://openalex.org/keywords/porting","display_name":"Porting","score":0.8271950483322144},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7559608221054077},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6666566133499146},{"id":"https://openalex.org/keywords/node","display_name":"Node (physics)","score":0.6073500514030457},{"id":"https://openalex.org/keywords/grid-network","display_name":"Grid network","score":0.5330373644828796},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.33664488792419434},{"id":"https://openalex.org/keywords/grid","display_name":"Grid","score":0.2084352970123291},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.16920214891433716},{"id":"https://openalex.org/keywords/software","display_name":"Software","score":0.06500598788261414},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06016707420349121}],"concepts":[{"id":"https://openalex.org/C9767117","wikidata":"https://www.wikidata.org/wiki/Q12510","display_name":"Torus","level":2,"score":0.8833353519439697},{"id":"https://openalex.org/C106251023","wikidata":"https://www.wikidata.org/wiki/Q851989","display_name":"Porting","level":3,"score":0.8271950483322144},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7559608221054077},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6666566133499146},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.6073500514030457},{"id":"https://openalex.org/C24337046","wikidata":"https://www.wikidata.org/wiki/Q4394138","display_name":"Grid network","level":3,"score":0.5330373644828796},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.33664488792419434},{"id":"https://openalex.org/C187691185","wikidata":"https://www.wikidata.org/wiki/Q2020720","display_name":"Grid","level":2,"score":0.2084352970123291},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.16920214891433716},{"id":"https://openalex.org/C2777904410","wikidata":"https://www.wikidata.org/wiki/Q7397","display_name":"Software","level":2,"score":0.06500598788261414},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06016707420349121},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2686882","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2686882","pdf_url":null,"source":{"id":"https://openalex.org/S2483380313","display_name":"ACM Transactions on Parallel Computing","issn_l":"2329-4949","issn":["2329-4949","2329-4957"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ACM Transactions on Parallel Computing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2172338940","display_name":"Programming Models and Application Requirements for an Exascale Computing Point Design Study","funder_award_id":"0837719","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G7954425250","display_name":null,"funder_award_id":"DE-AC02-06CH11357","funder_id":"https://openalex.org/F4320306084","funder_display_name":"U.S. Department of Energy"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320306084","display_name":"U.S. Department of Energy","ror":"https://ror.org/01bj3aw27"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W1558115001","https://openalex.org/W1585237817","https://openalex.org/W1611105440","https://openalex.org/W1855765675","https://openalex.org/W1978516206","https://openalex.org/W1987437824","https://openalex.org/W1997674404","https://openalex.org/W2009571103","https://openalex.org/W2011443595","https://openalex.org/W2014455962","https://openalex.org/W2032484463","https://openalex.org/W2053663473","https://openalex.org/W2059300917","https://openalex.org/W2105549957","https://openalex.org/W2131613942","https://openalex.org/W2137002702","https://openalex.org/W2138690674","https://openalex.org/W2143425413","https://openalex.org/W2245435529","https://openalex.org/W4213379201"],"related_works":["https://openalex.org/W2143738323","https://openalex.org/W1571065816","https://openalex.org/W2797748222","https://openalex.org/W2162777800","https://openalex.org/W2000102012","https://openalex.org/W2066405383","https://openalex.org/W2810598808","https://openalex.org/W2397964316","https://openalex.org/W2130460301","https://openalex.org/W2161502507"],"abstract_inverted_index":{"Modern":[0],"supercomputers":[1],"with":[2],"torus":[3,117],"networks":[4],"allow":[5,102],"each":[6],"node":[7],"to":[8,23,52,75,91,114],"simultaneously":[9],"pass":[10],"messages":[11],"on":[12,94,128],"all":[13],"of":[14,61,87],"its":[15],"links.":[16],"However,":[17],"most":[18],"collective":[19],"algorithms":[20,38,48,63,100],"are":[21],"designed":[22],"only":[24],"use":[25],"one":[26],"link":[27],"at":[28],"a":[29,65,105,129],"time.":[30],"In":[31,119],"this":[32],"work,":[33],"we":[34,69,121],"present":[35],"novel":[36],"multiported":[37,54],"for":[39,103],"the":[40,71,81],"scatter,":[41],"gather,":[42],"all-gather,":[43],"and":[44,57,79],"reduce-scatter":[45],"operations.":[46],"Our":[47],"can":[49],"be":[50],"combined":[51],"create":[53],"reduce,":[55],"all-reduce,":[56],"broadcast":[58],"algorithms.":[59,118],"Several":[60],"these":[62],"involve":[64],"new":[66],"technique":[67],"where":[68],"relax":[70],"MPI":[72],"message-ordering":[73],"constraints":[74],"achieve":[76],"high":[77],"performance":[78,112,127],"restore":[80],"correctordering":[82],"using":[83],"an":[84,95],"additional":[85],"stage":[86],"redundant":[88],"communication.":[89],"According":[90],"our":[92,99],"models,":[93],"n":[96,107],"-dimensional":[97],"torus,":[98],"should":[101],"nearly":[104,124],"2":[106],"-fold":[108],"improvement":[109],"in":[110],"communication":[111],"compared":[113],"known,":[115],"single-ported":[116],"practice,":[120],"have":[122],"achieved":[123],"6x":[125],"better":[126],"32k-node":[130],"3-dimensional":[131],"torus.":[132]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-07-18T07:39:51.176621","created_date":"2025-10-10T00:00:00"}
