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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A Study on the Generation of Local Memory Access Sequences and Communication Sets for Data-Parallel Programs

Shiu, Liang-Cheng 13 February 2003 (has links)
Distributed-memory multiprocessors offer very high levels of performance that are required to solve scientific applications. A traditional programming language cannot be expected to yield good performance when used to program such machines. Data-parallel languages provide programmers with a global memory and relieve them from the burden of inserting time-consuming, error-prone inter-processor communication. The compilers of these languages perform this task. Data-parallel languages also enable the programmers to establish alignment and distribution directives which specify the type of data parallelism and data mapping to the underlying parallel architecture. Parallelizing compilers distribute data and generate code according to the owner-computes rule when compiling an array statement. The array elements in a processor it owns are only a fraction of all the array elements. Not all of the array elements in the processor are active elements, so determining local memory access sequence is important. However, generating local memory access sequences becomes rather complicated when the array references involve complex subscripts. This study considers two types of complex subscript ― coupled subscripts and multiple induction variables. A processor may refer to the rhs (right-hand side) array elements owned by other processors, and the movement of data is inevitable. The overhead to access non-local data by inter-processor communication may be around 10 to 100 times more than the cost of accessing local data. Efficiently generating communication sets is important. This thesis introduces the concept of block compression/decompression, using smaller iteration tables, course distance and local block distance to solve problems of local memory access sequences, coupled scripts, MIV subscripts and communication set generation. Related work on these problems is reviewed and experimental results to demonstrate the benefit of the proposed methods.
2

STL on Limited Local Memory (LLM) Multi-core Processors

January 2012 (has links)
abstract: Limited Local Memory (LLM) multicore architectures are promising powerefficient architectures will scalable memory hierarchy. In LLM multicores, each core can access only a small local memory. Accesses to a large shared global memory can only be made explicitly through Direct Memory Access (DMA) operations. Standard Template Library (STL) is a powerful programming tool and is widely used for software development. STLs provide dynamic data structures, algorithms, and iterators for vector, deque (double-ended queue), list, map (red-black tree), etc. Since the size of the local memory is limited in the cores of the LLM architecture, and data transfer is not automatically supported by hardware cache or OS, the usage of current STL implementation on LLM multicores is limited. Specifically, there is a hard limitation on the amount of data they can handle. In this article, we propose and implement a framework which manages the STL container classes on the local memory of LLM multicore architecture. Our proposal removes the data size limitation of the STL, and therefore improves the programmability on LLM multicore architectures with little change to the original program. Our implementation results in only about 12%-17% increase in static library code size and reasonable runtime overheads. / Dissertation/Thesis / M.S. Computer Science 2012
3

Entre caminhos e lugares do livro: gabinetes de leitura na regiÃo norte do Cearà (1877-1919) / From paths and places of the book: reading cabinets in the north area of Cearà (1887-1919)

Jorge Luiz Ferreira de Lima 17 June 2011 (has links)
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / Este trabalho busca apresentar a trajetÃria dos gabinetes de leitura fundados nas cidades de Sobral Granja Ipu Camocim e ViÃosa a partir da consulta a jornais livros de memÃrias e entrevistas Procura tambÃm analisar o processo de constituiÃÃo dos acervos dos gabinetes de leitura de Ipu e Camocim cujo paradeiro foi possÃvel identificar A partir deles buscamos discutir a constituiÃÃo de uma rede de comunicaÃÃo configurada em torno da circulaÃÃo do objeto livro pelas cidades da regiÃo norte do Cearà reconstituindo os caminhos percorridos desde os locais de produÃÃo e publicaÃÃo passando pelas livrarias localizadas nos principais centros distribuidores do comÃrcio livreiro nacional atà a chegada aos leitores e aos acervos dos gabinetes de leitura da regiÃo norte do Cearà Neste esforÃo procuramos evidenciar a existÃncia de estabelecimentos ligados à venda de livros na regiÃo apontando as firmas comerciais como importantes pontos de distribuiÃÃo de livros didÃticos manuais litÃrgicos e textos devocionais e mais raramente obras literÃrias â romances As tipografias tambÃm se apresentam como pontos de distribuiÃÃo e produÃÃo de livros na regiÃo Ao fim discutimos a inserÃÃo dos gabinetes de leitura na memÃria local / This work try to present the trajectory of the reading cabinets founded in the cities of Sobral Granja Ipu Camocim and ViÃosa by newspapers books of memories and interviews It also tries to analyze the process of constitution of the collections of the reading cabinets of Ipu and Camocim whose whereabouts was possible to identify Starting from them we discuss the set up around the movement of the object book by the cities of the north area of Cearà retracing the paths taken from the production places and publication going by the bookstores located in main Centers distributors of the readers and the collections of the reading cabinets in the north region of Cearà In this effort we tried to demonstrate the existence of establishment connected with the sale of books in the area aiming to commercial firms as important points of distribution of didactic books liturgical manuals and devotional texts and more rarely literary works â novels The typographies are also seen as point of distribution and production of books in the region At the end we discussed the inclusion of the reading cabinets in the local memory
4

Kolektivní paměť Dejvic, Bubenče, Lysolaje, Šárky a Suchdola mezi druhou světovou válkou a gentrifikací / Collective memory of Dejvice, Bubeneč, Lysolaje, Šárka and Suchdol betwen Second World War and gentrification

Zmeškal, Tomáš January 2020 (has links)
(in English): Master thesis examines specific aspects of collective memory of parts of Prague 6, especially districts Dejvice, Bubeneč, Lysolaje, Šárka and Suchdol. These former municipalities are at Prague's outskirts and their marginalization supported some specific local narratives: legends and rumours. In this area gentrification went through since the beginning 21th century and is coming to an end. Gentrification to certain extend ends the social life of narratives, which originated in the 1950s. Master theses researched, how the narratives changed, for instance ones about former malting plant or brick factories. Another researched aspect is continual change of spatial appropriations of this part of Prague and its territorialisation within the framework of local culture: in the local memory there are partially deposited memories of local youth gang fights, which divided territories in Dejvice and Bubeneč at the late 1950s and early 1960s. During the field research the legend about "Roklák" was collected in Podbaba. The research also captured the change of usage of former locations of industrial plants and the continual process of their gentrification.
5

Entre caminhos e lugares do livro: gabinetes de leitura na região norte do Ceará (1877-1919) / From paths and places of the book: reading cabinets in the north area of Ceará (1887-1919)

Lima, Jorge Luiz Ferreira de January 2011 (has links)
LIMA, Jorge Luiz Ferreira de. Entre caminhos e lugares do livro: gabinetes de leitura na região norte do Ceará (1877-1919). 2011. 210 f. Dissertação (Mestrado em História) - Universidade Federal do Ceará, Departamento de História, Programa de Pós-Graduação em História Social, Fortaleza-CE, 2011. / Submitted by Raul Oliveira (raulcmo@hotmail.com) on 2012-06-27T14:45:43Z No. of bitstreams: 1 2011_Dis_JLFLima.pdf: 2438948 bytes, checksum: 3214eb91403d846b8929e126107a7dc5 (MD5) / Approved for entry into archive by Maria Josineide Góis(josineide@ufc.br) on 2012-06-27T14:52:30Z (GMT) No. of bitstreams: 1 2011_Dis_JLFLima.pdf: 2438948 bytes, checksum: 3214eb91403d846b8929e126107a7dc5 (MD5) / Made available in DSpace on 2012-06-27T14:52:30Z (GMT). No. of bitstreams: 1 2011_Dis_JLFLima.pdf: 2438948 bytes, checksum: 3214eb91403d846b8929e126107a7dc5 (MD5) Previous issue date: 2011 / This work try to present the trajectory of the reading cabinets founded in the cities of Sobral Granja Ipu Camocim and Viçosa by newspapers books of memories and interviews It also tries to analyze the process of constitution of the collections of the reading cabinets of Ipu and Camocim whose whereabouts was possible to identify Starting from them we discuss the set up around the movement of the object book by the cities of the north area of Ceará retracing the paths taken from the production places and publication going by the bookstores located in main Centers distributors of the readers and the collections of the reading cabinets in the north region of Ceará In this effort we tried to demonstrate the existence of establishment connected with the sale of books in the area aiming to commercial firms as important points of distribution of didactic books liturgical manuals and devotional texts and more rarely literary works – novels The typographies are also seen as point of distribution and production of books in the region At the end we discussed the inclusion of the reading cabinets in the local memory. / Este trabalho busca apresentar a trajetória dos gabinetes de leitura fundados nas cidades de Sobral Granja Ipu Camocim e Viçosa a partir da consulta a jornais livros de memórias e entrevistas Procura também analisar o processo de constituição dos acervos dos gabinetes de leitura de Ipu e Camocim cujo paradeiro foi possível identificar A partir deles buscamos discutir a constituição de uma rede de comunicação configurada em torno da circulação do objeto livro pelas cidades da região norte do Ceará reconstituindo os caminhos percorridos desde os locais de produção e publicação passando pelas livrarias localizadas nos principais centros distribuidores do comércio livreiro nacional até a chegada aos leitores e aos acervos dos gabinetes de leitura da região norte do Ceará Neste esforço procuramos evidenciar a existência de estabelecimentos ligados à venda de livros na região apontando as firmas comerciais como importantes pontos de distribuição de livros didáticos manuais litúrgicos e textos devocionais e mais raramente obras literárias – romances As tipografias também se apresentam como pontos de distribuição e produção de livros na região Ao fim discutimos a inserção dos gabinetes de leitura na memória local.

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