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[{"key": "dc.contributor.advisor", "value": "Honkanen, Risto", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Moilanen, Marko", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-05-11T07:38:15Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-05-11T07:38:15Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/86907", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Merkitt\u00e4v\u00e4 rinnakkaisohjelman suorituskykyyn vaikuttava tekij\u00e4 on laskennan ja viestinn\u00e4n v\u00e4linen tasapaino. Tutkielmassa kehitettiin rinnakkaisalgoritmi ja sit\u00e4 vastaava kustannusmalli matriisikertolaskulle C = AB, miss\u00e4 A, B ja C ovat n \u00d7 n-matriiseja. Algoritmi ja kustannusmalli kehitettiin sek\u00e4 hajautetun ett\u00e4 jaetun muistin rinnakkaistietokoneille. Kustannusmalli esitettiin kustannusfunktiona.\n\nTutkielmassa sovellettiin konstruktiivista tutkimusotetta. Ensin perehdyttiin rinnakkaistietokoneisiin, rinnakkaislaskennan teoreettisiin malleihin, kahteen rinnakkaislaskennan ohjelmointiymp\u00e4rist\u00f6\u00f6n sek\u00e4 matriisikertolaskun rinnakkaistamiseen. Sen j\u00e4lkeen laadittiin yksinkertaisiin oletuksiin perustuva algoritmi ja sit\u00e4 vastaava kustannusfunktio sek\u00e4 jaetulle ett\u00e4 hajautetulle muistille. Algoritmit my\u00f6s toteutettiin ja niit\u00e4 suoritettiin CSC:n Puhti-supertietokoneessa. Suoritusaikoja mittaamalla m\u00e4\u00e4ritettiin kustannusfunktioiden parametrit ja saatiin tietoa funktioiden tarkkuudesta.\n\nKumpikin kustannusmalli osoittautui tyydytt\u00e4v\u00e4n tarkaksi, kun n \u2264 512. Mallien avulla voidaan karkeasti arvioida rinnakkaistamisesta saatavaa hy\u00f6ty\u00e4. Tarkkaan suoritusaikojen ennustamiseen mallit eiv\u00e4t kuitenkaan sovi. Ne eiv\u00e4t my\u00f6sk\u00e4\u00e4n huomioi nykyaikaisten rinnakkaistietokoneiden hierarkkista rakennetta. Siksi on syyt\u00e4 olettaa, ett\u00e4 suurempia rinnakkaislaskentaymp\u00e4rist\u00f6j\u00e4 varten tarvitaan yksityiskohtaisempi malli.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-05-11T07:38:15Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-05-11T07:38:15Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "94", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "kustannusmalli", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "MPI", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "numeerinen lineaarialgebra", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "OpenMP", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Matriisikertolaskun kustannusmalli hajautetun ja jaetun muistin rinnakkaistietokoneille", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202305112986", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietotekniikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Mathematical Information Technology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "602", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "rinnakkaisk\u00e4sittely", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "algoritmit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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