{"id":"https://openalex.org/W3196188193","doi":"https://doi.org/10.1109/asap52443.2021.00008","title":"To Buffer, or Not to Buffer? A Case Study on FFT Accelerators for Ultra-Low-Power Multicore Clusters","display_name":"To Buffer, or Not to Buffer? A Case Study on FFT Accelerators for Ultra-Low-Power Multicore Clusters","publication_year":2021,"publication_date":"2021-07-01","ids":{"openalex":"https://openalex.org/W3196188193","doi":"https://doi.org/10.1109/asap52443.2021.00008","mag":"3196188193"},"language":"en","primary_location":{"id":"doi:10.1109/asap52443.2021.00008","is_oa":false,"landing_page_url":"https://doi.org/10.1109/asap52443.2021.00008","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd International Conference on Application-specific Systems, Architectures and Processors (ASAP)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/20.500.11850/506206","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5062088050","display_name":"Luca Bertaccini","orcid":"https://orcid.org/0000-0002-3011-6368"},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]}],"countries":["CH"],"is_corresponding":true,"raw_author_name":"Luca Bertaccini","raw_affiliation_strings":["ETH Zurich,Zurich,Switzerland","ETH Zurich, Zurich, Switzerland"],"affiliations":[{"raw_affiliation_string":"ETH Zurich,Zurich,Switzerland","institution_ids":["https://openalex.org/I35440088"]},{"raw_affiliation_string":"ETH Zurich, Zurich, Switzerland","institution_ids":["https://openalex.org/I35440088"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043408422","display_name":"Luca Benini","orcid":"https://orcid.org/0000-0001-8068-3806"},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Luca Benini","raw_affiliation_strings":["University of Bologna,ETH Zurich,Zurich,Switzerland","ETH Zurich, University of Bologna, Zurich, Switzerland"],"affiliations":[{"raw_affiliation_string":"University of Bologna,ETH Zurich,Zurich,Switzerland","institution_ids":["https://openalex.org/I35440088"]},{"raw_affiliation_string":"ETH Zurich, University of Bologna, Zurich, Switzerland","institution_ids":["https://openalex.org/I35440088"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038717922","display_name":"Francesco Conti","orcid":"https://orcid.org/0000-0002-7924-933X"},"institutions":[{"id":"https://openalex.org/I9360294","display_name":"University of Bologna","ror":"https://ror.org/01111rn36","country_code":"IT","type":"education","lineage":["https://openalex.org/I9360294"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Francesco Conti","raw_affiliation_strings":["University of Bologna,Bologna,Italy","University of Bologna, Bologna, Italy"],"affiliations":[{"raw_affiliation_string":"University of Bologna,Bologna,Italy","institution_ids":["https://openalex.org/I9360294"]},{"raw_affiliation_string":"University of Bologna, Bologna, Italy","institution_ids":["https://openalex.org/I9360294"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5062088050"],"corresponding_institution_ids":["https://openalex.org/I35440088"],"apc_list":null,"apc_paid":null,"fwci":1.0027,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.75640035,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10558","display_name":"Advancements in Semiconductor Devices and Circuit Design","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10558","display_name":"Advancements in Semiconductor Devices and Circuit Design","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10323","display_name":"Analog and Mixed-Signal Circuit Design","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/buffer","display_name":"Buffer (optical fiber)","score":0.8159404993057251},{"id":"https://openalex.org/keywords/multi-core-processor","display_name":"Multi-core processor","score":0.6563507318496704},{"id":"https://openalex.org/keywords/fast-fourier-transform","display_name":"Fast Fourier transform","score":0.6240832209587097},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6183735728263855},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.5061301589012146},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.38391128182411194},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.09619450569152832},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.08865275979042053}],"concepts":[{"id":"https://openalex.org/C145018004","wikidata":"https://www.wikidata.org/wiki/Q4985944","display_name":"Buffer (optical fiber)","level":2,"score":0.8159404993057251},{"id":"https://openalex.org/C78766204","wikidata":"https://www.wikidata.org/wiki/Q555032","display_name":"Multi-core processor","level":2,"score":0.6563507318496704},{"id":"https://openalex.org/C75172450","wikidata":"https://www.wikidata.org/wiki/Q623950","display_name":"Fast Fourier transform","level":2,"score":0.6240832209587097},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6183735728263855},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.5061301589012146},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.38391128182411194},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.09619450569152832},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08865275979042053},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","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":4,"locations":[{"id":"doi:10.1109/asap52443.2021.00008","is_oa":false,"landing_page_url":"https://doi.org/10.1109/asap52443.2021.00008","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd International Conference on Application-specific Systems, Architectures and Processors (ASAP)","raw_type":"proceedings-article"},{"id":"pmh:oai:cris.unibo.it:11585/847011","is_oa":false,"landing_page_url":"http://hdl.handle.net/11585/847011","pdf_url":null,"source":{"id":"https://openalex.org/S4306402579","display_name":"Archivio istituzionale della ricerca (Alma Mater Studiorum Universit\u00e0 di Bologna)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210117483","host_organization_name":"Istituto di Ematologia di Bologna","host_organization_lineage":["https://openalex.org/I4210117483"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferenceObject"},{"id":"pmh:oai:www.research-collection.ethz.ch:20.500.11850/506206","is_oa":true,"landing_page_url":"http://hdl.handle.net/20.500.11850/506206","pdf_url":null,"source":{"id":"https://openalex.org/S4306402302","display_name":"Repository for Publications and Research Data (ETH Zurich)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I35440088","host_organization_name":"ETH Zurich","host_organization_lineage":["https://openalex.org/I35440088"],"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":"2021 IEEE 32nd International Conference on Application-specific Systems, Architectures and Processors (ASAP)","raw_type":"info:eu-repo/semantics/conferenceObject"},{"id":"doi:10.3929/ethz-b-000506206","is_oa":true,"landing_page_url":"https://doi.org/10.3929/ethz-b-000506206","pdf_url":null,"source":{"id":"https://openalex.org/S7407051236","display_name":"ETH Z\u00fcrich Research Collection","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"pmh:oai:www.research-collection.ethz.ch:20.500.11850/506206","is_oa":true,"landing_page_url":"http://hdl.handle.net/20.500.11850/506206","pdf_url":null,"source":{"id":"https://openalex.org/S4306402302","display_name":"Repository for Publications and Research Data (ETH Zurich)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I35440088","host_organization_name":"ETH Zurich","host_organization_lineage":["https://openalex.org/I35440088"],"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":"2021 IEEE 32nd International Conference on Application-specific Systems, Architectures and Processors (ASAP)","raw_type":"info:eu-repo/semantics/conferenceObject"},"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.7699999809265137}],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320323915","display_name":"Swiss Re","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W1578782208","https://openalex.org/W1977482330","https://openalex.org/W2003313945","https://openalex.org/W2020404950","https://openalex.org/W2027237622","https://openalex.org/W2061171222","https://openalex.org/W2092286822","https://openalex.org/W2104865560","https://openalex.org/W2106788917","https://openalex.org/W2117639037","https://openalex.org/W2121758432","https://openalex.org/W2157019300","https://openalex.org/W2233304223","https://openalex.org/W2402693132","https://openalex.org/W2524428287","https://openalex.org/W2551489658","https://openalex.org/W2594399252","https://openalex.org/W2777707322","https://openalex.org/W2811162328","https://openalex.org/W2845210056","https://openalex.org/W2907773570","https://openalex.org/W2963255460","https://openalex.org/W2999537838","https://openalex.org/W3033308515","https://openalex.org/W3036079062","https://openalex.org/W6634499306","https://openalex.org/W6727208969"],"related_works":["https://openalex.org/W2097227107","https://openalex.org/W1993191611","https://openalex.org/W2023938924","https://openalex.org/W2918840249","https://openalex.org/W1991859582","https://openalex.org/W2110053126","https://openalex.org/W2079303253","https://openalex.org/W2104702637","https://openalex.org/W4248099758","https://openalex.org/W2979015021"],"abstract_inverted_index":{"Hardware-accelerated":[0],"multicore":[1,211],"clusters":[2],"have":[3],"recently":[4],"emerged":[5],"as":[6,140,142],"a":[7,24,43,61,79,90,118],"viable":[8],"approach":[9],"to":[10,83,117,122,167],"deploy":[11],"advanced":[12],"digital":[13],"signal":[14],"processing":[15],"(DSP)":[16],"capabilities":[17],"in":[18,186,225],"ultra-low-power":[19],"extreme":[20],"edge":[21],"nodes.":[22],"As":[23],"critical":[25],"basic":[26],"block":[27],"for":[28,40,73,131,192],"DSP,":[29],"Fast":[30],"Fourier":[31],"Transforms":[32],"(FFTs)":[33],"are":[34],"one":[35,77,145],"of":[36,56,176],"the":[37,97,134,143,149,161,226],"best":[38],"candidates":[39],"implementation":[41,213],"on":[42,104,215],"dedicated":[44],"accelerator":[45,59,92,136,163,203],"core;":[46],"however,":[47],"their":[48],"peculiar":[49],"memory":[50,95],"access":[51,125],"patterns":[52],"make":[53],"direct":[54],"integration":[55],"an":[57,172,209],"FFT":[58,75,222],"with":[60,78,96,107,171,195,221],"core":[62],"cluster":[63,98],"challenging.":[64],"In":[65],"this":[66],"paper,":[67],"we":[68],"compare":[69],"two":[70],"different":[71],"approaches":[72],"cluster-coupled":[74],"accelerators:":[76],"large":[80],"internal":[81],"buffer":[82],"store":[84],"and":[85,89,110,126,156,198,218],"shuffle":[86],"partial":[87],"results;":[88],"buffer-less":[91,135,162,202],"sharing":[93],"all":[94],"cores.":[99],"Both":[100],"versions":[101],"can":[102,137,164],"work":[103],"complex":[105,193],"data":[106,124,194,217],"8/16/32-bit":[108,196],"real":[109,197],"imaginary":[111,199],"parts.":[112],"We":[113,152],"show":[114],"that,":[115],"thanks":[116],"newly":[119],"proposed":[120],"scheme":[121],"reorder":[123],"exploit":[127],"full":[128],"bandwidth":[129],"also":[130],"sub-word":[132],"FFTs,":[133],"be":[138],"made":[139],"fast":[141],"buffered":[144],"at":[146],"only":[147],"0.26&#x00D7;":[148],"area":[150],"cost.":[151],"report":[153],"post-layout":[154],"performance":[155],"power":[157,174],"results":[158],"showing":[159],"that":[160],"provide":[165],"up":[166],"4/2/1":[168],"butterfly/cycle":[169],"performance,":[170],"average":[173],"consumption":[175],"4.1/5.5/6.8":[177],"mW":[178],"@":[179],"350":[180],"MHz,":[181],"0.65":[182],"V":[183],"operating":[184],"point":[185],"22":[187],"nm":[188],"CMOS":[189],"technology,":[190],"respectively":[191],"part.":[200],"The":[201],"is":[204],"8":[205],"&#x00D7;":[206],"faster":[207],"than":[208],"optimized":[210],"software":[212],"working":[214],"16-bit":[216],"compares":[219],"favorably":[220],"accelerators":[223],"presented":[224],"recent":[227],"literature.":[228]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
