Curitiba, Estado de Paraná, Brasil
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  • ateliware

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Publicaciones

  • Back to the Past: When Segmentation Is More Efficient Than Paging

    WORKSHOP EM DESEMPENHO DE SISTEMAS COMPUTACIONAIS E DE COMUNICAÇÃO (WPERFORMANCE_CSBC)

    Virtual Memory was devised in a time of scarce resources. In the coming decade we expect to see physical memory systems populated with 2^64 bytes of RAM, a fraction of which may be non-volatile. Demand paging is inefficient in such large memories because space (Page Tables) and time (Page Table walks) overheads are too high. We collected execution traces from six applications and characterized their virtual memory behavior with respect to miss rates in references to Translation Buffers (TLBs)…

    Virtual Memory was devised in a time of scarce resources. In the coming decade we expect to see physical memory systems populated with 2^64 bytes of RAM, a fraction of which may be non-volatile. Demand paging is inefficient in such large memories because space (Page Tables) and time (Page Table walks) overheads are too high. We collected execution traces from six applications and characterized their virtual memory behavior with respect to miss rates in references to Translation Buffers (TLBs) and Segment Buffers (SBs). Our measurements indicate that the miss rates for SBs are 2-3 orders of magnitude smaller than for TLBs. In light of these results, we discuss some of the design implications of segmented systems and of SBs.

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  • Back to the Past: Segmentation with Infinite and Non-Volatile Memory

    XVII Simpósio em Sistemas Computacionais (WSCAD-SSC'16), pgs 1-12, Out. 2016.

    The design of the current desktop/server operating systems is premised on the use of slow magnetic disks. Two recent developments, (i) RAM capacity nearing 264 bytes, and (ii) the introduction of non-volatile memory (NVRAM), provide an opportunity for a complete re-design of traditional Unix-like operating systems. We discuss some of the issues which that proposition and offer a few suggestions for areas that may benefit from looking back at pioneering work. We then propose a segmented…

    The design of the current desktop/server operating systems is premised on the use of slow magnetic disks. Two recent developments, (i) RAM capacity nearing 264 bytes, and (ii) the introduction of non-volatile memory (NVRAM), provide an opportunity for a complete re-design of traditional Unix-like operating systems. We discuss some of the issues which that proposition and offer a few suggestions for areas that may benefit from looking back at pioneering work. We then propose a segmented memory model for the MIPS processor.

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  • Vida Parcelada - iOS

    Vida Parcelada é um aplicativo para iPhone que ajuda você a controlar e prever o valor das suas compras parceladas no cartão de crédito. O App é direcionado para o mercado brasileiro e tem como objetivo ajudar o usuário prever o quanto ele já comprometeu com parcelas que irão vencer nos próximos meses.

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Reconocimientos y premios

  • Reconhecimento - Integridade

    NCR Corporation

    Nosso êxito deve-se em grande parte à força criativa, perseverança e dedicação de pessoas como você, que ajudam a construir uma empresa próspera e a influenciar o mundo com nossa tecnologia. Expressamos nossa sincera apreciação por vivenciar os valores NCR, que constroem nosso sucesso.

  • Programa de Reconhecimento de Funcionários

    NCR Corporation

    Em reconhecimento a sua significativa contribuição para os resultados da NCR.
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