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Title: O efeito da largura de Fetch no desempenho das arquiteturas super escalar, trace cache e DTSVLIW
Authors: Freitas, Christian Daros de
Keywords: arquitetura de computador;memória cache
Issue Date: 29-Oct-2003
Publisher: Universidade Federal do Espírito Santo
Citation: FREITAS, Christian Daros de. O efeito da largura de Fetch no desempenho das arquiteturas super escalar, trace cache e DTSVLIW. 2003. 98 f. Dissertação (Mestrado em Ciência da Computação) - Universidade Federal do Espírito Santo, Vitória, 2003.
Abstract: Superscalar machines fetch multiple scalar instructions per cycle from the instruction cache. However, machines that fetch no more than one instruction per cycle from the instruction cache, such as Dynamically Trace Scheduled VLIW (DTSVLIW) machines, have shown performance comparable to that of Superscalars. In this paper we present experiments which show that fetching a single instruction from the instruction cache per cycle allows the same performance achieved fetching multiple instructions per cycle thanks to the execution locality present in programs. We also present the first direct comparison between the Superscalars, Trace Cache and DTSVLIW architectures. Our results show that a DTSVLIW machine capable of executing up to 16 instructions per cycle can perform 21.9% better than a Superscalar and 6.6% better than a Trace Cache with equivalent hardware. In the comparison between a DTSVLIW machine and an Alpha 21264 machine, we have shown that the DTSVLIW can perform 24,17% better than Alpha using integer programs, and 60,36% better than Alpha using floating point programs.
Appears in Collections:PPGI - Dissertações de mestrado

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