id:"swepub:oai:DiVA.org:liu-5720"
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03694nam a2200397 4500 | |
| 001 | oai:DiVA.org:liu-5720 | |
| 003 | SwePub | |
| 008 | 030415s2002 | |||||||||||000 ||eng| | |
| 020 | a 917373280Xq print | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57202 URI |
| 040 | a (SwePub)liu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a vet2 swepub-contenttype |
| 072 | 7 | a lic2 swepub-publicationtype |
| 100 | 1 | a Aronsson, Peteru Linköpings universitet,PELAB - Laboratoriet för programmeringsomgivningar,Tekniska högskolan4 aut0 (Swepub:liu)petar73 |
| 245 | 1 0 | a Automatic Parallelization of Simulation Code from Equation Based Simulation Languages |
| 264 | 1 | b Institutionen för datavetenskap,c 2002 |
| 300 | a 107 s. | |
| 338 | a electronic2 rdacarrier | |
| 490 | 0 | a Linköping Studies in Science and Technology. Thesis,x 0280-7971 ;v 933 |
| 500 | a Report code: LiU-Tek-Lic-2002:06. | |
| 520 | a Modern state-of-the-art equation based object oriented modeling languages such as Modelica have enabled easy modeling of large and complex physical systems. When such complex models are to be simulated, simulation tools typically perform a number of optimizations on the underlying set of equations in the modeled system, with the goal of gaining better simulation performance by decreasing the equation system size and complexity. The tools then typically generate efficient code to obtain fast execution of the simulations. However, with increasing complexity of modeled systems the number of equations and variables are increasing. Therefore, to be able to simulate these large complex systems in an efficient way parallel computing can be exploited.This thesis presents the work of building an automatic parallelization tool that produces an efficient parallel version of the simulation code by building a data dependency graph (task graph) from the simulation code and applying efficient scheduling and clustering algorithms on the task graph. Various scheduling and clustering algorithms, adapted for the requirements from this type of simulation code, have been implemented and evaluated. The scheduling and clustering algorithms presented and evaluated can also be used for functional dataflow languages in general, since the algorithms work on a task graph with dataflow edges between nodes.Results are given in form of speedup measurements and task graph statistics produced by the tool. The conclusion drawn is that some of the algorithms investigated and adapted in this work give reasonable measured speedup results for some specific Modelica models, e.g. a model of a thermofluid pipe gave a speedup of about 2.5 on 8 processors in a PC-cluster. However, future work lies in finding a good algorithm that works well in general. | |
| 650 | 7 | a NATURVETENSKAPx Data- och informationsvetenskapx Datavetenskap0 (SwePub)102012 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Computer and Information Sciencesx Computer Sciences0 (SwePub)102012 hsv//eng |
| 653 | a state-of-the-art equation | |
| 653 | a object oriented modeling | |
| 653 | a automatic parallelization tool | |
| 653 | a data dependency graph | |
| 653 | a clustering algorithms | |
| 653 | a Computer science | |
| 653 | a Datavetenskap | |
| 700 | 1 | a Fritzson, Peteru Linköpings universitet,PELAB - Laboratoriet för programmeringsomgivningar,Tekniska högskolan4 ths0 (Swepub:liu)petfr27 |
| 710 | 2 | a Linköpings universitetb PELAB - Laboratoriet för programmeringsomgivningar4 org |
| 856 | 4 | u https://liu.diva-portal.org/smash/get/diva2:21475/FULLTEXT01.pdfx primaryx Raw objecty fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5720 |
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