{"id":"https://openalex.org/W3204995106","doi":"https://doi.org/10.1145/3466752.3480053","title":"Branch Runahead: An Alternative to Branch Prediction for Impossible to Predict Branches","display_name":"Branch Runahead: An Alternative to Branch Prediction for Impossible to Predict Branches","publication_year":2021,"publication_date":"2021-10-17","ids":{"openalex":"https://openalex.org/W3204995106","doi":"https://doi.org/10.1145/3466752.3480053","mag":"3204995106"},"language":"en","primary_location":{"id":"doi:10.1145/3466752.3480053","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3466752.3480053","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"MICRO-54: 54th Annual IEEE/ACM International Symposium on Microarchitecture","raw_type":"proceedings-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/A5042048065","display_name":"Stephen Pruett","orcid":null},"institutions":[{"id":"https://openalex.org/I86519309","display_name":"The University of Texas at Austin","ror":"https://ror.org/00hj54h04","country_code":"US","type":"education","lineage":["https://openalex.org/I86519309"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Stephen Pruett","raw_affiliation_strings":["UT Austin, United States of America"],"affiliations":[{"raw_affiliation_string":"UT Austin, United States of America","institution_ids":["https://openalex.org/I86519309"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5070360563","display_name":"Yale N. Patt","orcid":"https://orcid.org/0009-0004-8704-8249"},"institutions":[{"id":"https://openalex.org/I86519309","display_name":"The University of Texas at Austin","ror":"https://ror.org/00hj54h04","country_code":"US","type":"education","lineage":["https://openalex.org/I86519309"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yale Patt","raw_affiliation_strings":["UT Austin, United States of America"],"affiliations":[{"raw_affiliation_string":"UT Austin, United States of America","institution_ids":["https://openalex.org/I86519309"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5042048065"],"corresponding_institution_ids":["https://openalex.org/I86519309"],"apc_list":null,"apc_paid":null,"fwci":3.0459,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.91660232,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"804","last_page":"815"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":1.0,"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":1.0,"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/T11181","display_name":"Advanced Data Storage Technologies","score":0.9990000128746033,"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/T10363","display_name":"Low-power high-performance VLSI design","score":0.9973000288009644,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/branch-predictor","display_name":"Branch predictor","score":0.9553440809249878},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.7549823522567749},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.730208158493042},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.5347183346748352},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.45687663555145264},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.276558518409729},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.15166079998016357}],"concepts":[{"id":"https://openalex.org/C168522837","wikidata":"https://www.wikidata.org/wiki/Q679552","display_name":"Branch predictor","level":2,"score":0.9553440809249878},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.7549823522567749},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.730208158493042},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.5347183346748352},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.45687663555145264},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.276558518409729},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.15166079998016357},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3466752.3480053","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3466752.3480053","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"MICRO-54: 54th Annual IEEE/ACM International Symposium on Microarchitecture","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W1807272711","https://openalex.org/W1978301594","https://openalex.org/W2011784170","https://openalex.org/W2015691124","https://openalex.org/W2034861439","https://openalex.org/W2060760674","https://openalex.org/W2099089002","https://openalex.org/W2100869242","https://openalex.org/W2105194472","https://openalex.org/W2108290909","https://openalex.org/W2113617109","https://openalex.org/W2134633067","https://openalex.org/W2143068308","https://openalex.org/W2148635054","https://openalex.org/W2156484396","https://openalex.org/W2164148722","https://openalex.org/W2168307289","https://openalex.org/W2170382128","https://openalex.org/W2237666531","https://openalex.org/W2534513754","https://openalex.org/W2567398608","https://openalex.org/W2601699999","https://openalex.org/W2621336173","https://openalex.org/W2806279293","https://openalex.org/W2903916265","https://openalex.org/W2976641673","https://openalex.org/W3012303953","https://openalex.org/W3016042508","https://openalex.org/W3032360013","https://openalex.org/W3043309796","https://openalex.org/W3091523831","https://openalex.org/W3104781657","https://openalex.org/W4233429846","https://openalex.org/W4239813889","https://openalex.org/W4256592301"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2061007994","https://openalex.org/W2408643487","https://openalex.org/W4256090683","https://openalex.org/W2145546531","https://openalex.org/W1586172811","https://openalex.org/W2389267844","https://openalex.org/W365166040"],"abstract_inverted_index":{"High":[0],"performance":[1],"microprocessors":[2],"require":[3,56],"high":[4,75],"levels":[5],"of":[6,17,44,89,97],"instruction":[7],"supply.":[8],"Branch":[9,67],"prediction":[10],"has":[11,47],"been":[12,48],"the":[13],"most":[14],"important":[15],"driver":[16],"this":[18],"for":[19],"nearly":[20],"30":[21],"years.":[22],"Unfortunately,":[23],"modern":[24],"predictors":[25],"are":[26],"increasingly":[27],"bottlenecked":[28],"by":[29],"hard-to-predict":[30],"data-dependent":[31],"branches":[32],"that":[33,73],"fundamentally":[34],"cannot":[35],"be":[36],"predicted":[37],"via":[38],"a":[39,51,57,69,84],"history":[40],"based":[41],"approach.":[42],"Pre-computation":[43],"branch":[45,87],"instructions":[46],"suggested":[49],"as":[50],"solution,":[52],"but":[53],"such":[54],"schemes":[55],"careful":[58],"trade-off":[59],"between":[60],"timeliness":[61],"and":[62,91],"complexity.":[63],"This":[64],"paper":[65],"introduces":[66],"Runahead:":[68],"low-cost,":[70],"hardware-only":[71],"solution":[72],"achieves":[74],"accuracy":[76],"while":[77],"only":[78],"performing":[79],"lightweight":[80],"pre-computation.":[81],"The":[82],"result:":[83],"reduction":[85],"in":[86,95],"MPKI":[88],"47.5%":[90],"an":[92],"average":[93],"improvement":[94],"IPC":[96],"16.9%.":[98]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":2}],"updated_date":"2026-03-06T13:50:29.536080","created_date":"2025-10-10T00:00:00"}