{"id":"https://openalex.org/W7163205670","doi":"https://doi.org/10.1145/3812836.3814781","title":"Phase Matters: Characterizing Heterogeneous Vision-Language Inference on a Mobile SoC","display_name":"Phase Matters: Characterizing Heterogeneous Vision-Language Inference on a Mobile SoC","publication_year":2026,"publication_date":"2026-06-02","ids":{"openalex":"https://openalex.org/W7163205670","doi":"https://doi.org/10.1145/3812836.3814781"},"language":null,"primary_location":{"id":"doi:10.1145/3812836.3814781","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3812836.3814781","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 24th Annual International Conference on Mobile Systems, Applications and Services Workshops","raw_type":"proceedings-article"},"type":"article","indexed_in":["arxiv","crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1145/3812836.3814781","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5137651946","display_name":"Aryama V Murthy","orcid":"https://orcid.org/0009-0005-0313-4690"},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Aryama V Murthy","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0009-0005-0313-4690","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5137635475","display_name":"Yashas N Kotre","orcid":"https://orcid.org/0009-0008-6658-878X"},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Yashas N Kotre","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0009-0008-6658-878X","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100583572","display_name":"Prathmesh Sharma","orcid":null},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Prathmesh Sharma","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0009-0007-5988-5658","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101744522","display_name":"Pragya Mishra","orcid":"https://orcid.org/0009-0007-4671-5609"},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Pragya Mishra","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0009-0002-3446-7488","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5137631462","display_name":"Sanjith Ganapathi","orcid":"https://orcid.org/0009-0005-5397-5578"},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Sanjith Ganapathi","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0009-0005-5397-5578","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5067601336","display_name":"Priyesh Shukla","orcid":"https://orcid.org/0000-0002-9868-8944"},"institutions":[{"id":"https://openalex.org/I64189192","display_name":"International Institute of Information Technology, Hyderabad","ror":"https://ror.org/05f11g639","country_code":"IN","type":"education","lineage":["https://openalex.org/I64189192"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Priyesh Shukla","raw_affiliation_strings":["International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India"],"raw_orcid":"https://orcid.org/0000-0002-9868-8944","affiliations":[{"raw_affiliation_string":"International Institute of Information Technology Hyderabad, Hyderabad, Telangana, India","institution_ids":["https://openalex.org/I64189192"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I64189192"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.68869293,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"322","last_page":"327"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12808","display_name":"Ferroelectric and Negative Capacitance Devices","score":0.3077000081539154,"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/T12808","display_name":"Ferroelectric and Negative Capacitance Devices","score":0.3077000081539154,"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/T10036","display_name":"Advanced Neural Network Applications","score":0.08429999649524689,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T10502","display_name":"Advanced Memory and Neural Computing","score":0.05249999836087227,"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/phase","display_name":"Phase (matter)","score":0.43970000743865967},{"id":"https://openalex.org/keywords/inference","display_name":"Inference","score":0.38429999351501465},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.2913999855518341},{"id":"https://openalex.org/keywords/stability","display_name":"Stability (learning theory)","score":0.26440000534057617},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.2630999982357025}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.612500011920929},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.43970000743865967},{"id":"https://openalex.org/C2776214188","wikidata":"https://www.wikidata.org/wiki/Q408386","display_name":"Inference","level":2,"score":0.38429999351501465},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.33500000834465027},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.32580000162124634},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.2913999855518341},{"id":"https://openalex.org/C112972136","wikidata":"https://www.wikidata.org/wiki/Q7595718","display_name":"Stability (learning theory)","level":2,"score":0.26440000534057617},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.263700008392334},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.2630999982357025},{"id":"https://openalex.org/C18762648","wikidata":"https://www.wikidata.org/wiki/Q42213","display_name":"Work (physics)","level":2,"score":0.25850000977516174},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.25360000133514404}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/3812836.3814781","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3812836.3814781","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 24th Annual International Conference on Mobile Systems, Applications and Services Workshops","raw_type":"proceedings-article"},{"id":"pmh:oai:arXiv.org:2606.27906","is_oa":true,"landing_page_url":"https://arxiv.org/abs/2606.27906","pdf_url":"https://arxiv.org/pdf/2606.27906","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":{"id":"doi:10.1145/3812836.3814781","is_oa":true,"landing_page_url":"https://doi.org/10.1145/3812836.3814781","pdf_url":null,"source":null,"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 24th Annual International Conference on Mobile Systems, Applications and Services Workshops","raw_type":"proceedings-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":1,"referenced_works":["https://openalex.org/W2002555321"],"related_works":[],"abstract_inverted_index":{"Recent":[0],"phone-class":[1],"mobile":[2,150],"SoCs":[3],"expose":[4],"practical":[5,146],"NPU":[6,79],"execution":[7,80],"paths":[8],"for":[9,21,87,149],"on-device":[10],"vision-language":[11],"model":[12],"(VLM)":[13],"inference,":[14],"but":[15,89],"developers":[16],"still":[17],"lack":[18],"phase-level":[19],"guidance":[20],"mapping":[22],"VLM":[23,34,151],"pipelines":[24],"across":[25,70],"heterogeneous":[26,52],"backends.":[27],"We":[28],"present":[29],"a":[30,123,145],"hardware-in-the-loop":[31],"characterization":[32],"of":[33],"inference":[35],"on":[36],"the":[37,136],"Qualcomm":[38],"SM8750":[39],"(Snapdragon":[40],"8":[41],"Elite),":[42],"covering":[43],"phase":[44,77],"throughput,":[45],"cache-state":[46],"effects,":[47],"100-run":[48],"thermal":[49,114],"stability,":[50],"energy,":[51,112],"CPU/NPU":[53],"pipeline":[54],"configurations,":[55],"and":[56,109],"visual-token-budget":[57],"sensitivity.":[58],"Using":[59],"FastVLM-0.5B":[60],"as":[61,132],"an":[62],"end-to-end":[63],"case":[64],"study,":[65],"together":[66],"with":[67,139],"encoder-only":[68],"measurements":[69],"four":[71],"architecture":[72],"families,":[73],"we":[74,120],"show":[75,121],"that":[76,122],"matters:":[78],"is":[81],"highly":[82],"phase-dependent,":[83],"delivering":[84],"1.64\u00d7":[85],"speedup":[86],"prefill":[88],"only":[90],"1.18\u00d7for":[91],"decode,":[92],"while":[93],"vision":[94],"encoders":[95],"achieve":[96],"20\u201345\u00d7":[97],"speedups":[98],"over":[99],"CPU.":[100],"These":[101],"gains":[102],"translate":[103],"into":[104],"10.47\u00b0C":[105],"lower":[106,111],"steady-state":[107],"temperature":[108],"2.52\u00d7":[110],"avoiding":[113],"throttling":[115],"in":[116],"always-on":[117],"settings.":[118],"Finally,":[119],"four-step":[124],"graph":[125],"rewrite":[126],"enables":[127],"previously":[128],"unsupported":[129],"encoders,":[130],"such":[131],"Phi-3.5-V,":[133],"to":[134,141],"reach":[135],"QNN":[137],"path":[138],"up":[140],"22\u00d7":[142],"speedup,":[143],"providing":[144],"porting":[147],"recipe":[148],"deployment.":[152]},"counts_by_year":[],"updated_date":"2026-07-03T08:13:44.112507","created_date":"2026-06-03T00:00:00"}