The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Embora as superpáginas sejam uma solução eficiente para aumentar o alcance do TLB, a forte restrição ao uso de superpáginas dificulta a utilização real. Duas soluções anteriores, um TLB de subbloco parcial e a memória sombra, foram propostas para perder a restrição. Um TLB de subbloco parcial perde apenas uma pequena parte da restrição e limita o tamanho da superpágina com um custo. A memória sombra perde a maior parte da restrição, mas introduz outros problemas sérios. Propomos três novas abordagens para melhorar o suporte de superpáginas. Primeiro, propomos um esquema híbrido que integra tanto a memória sombra quanto um TLB de subbloco parcial, aproveitando assim os benefícios herdados de ambos os lados. O esquema híbrido tem uma utilização de superpágina tão alta quanto a memória sombra e evita a maioria dos problemas na memória sombra em virtude do TLB de subbloco parcial. Em segundo lugar, os VS-TLBs são uma extensão dos TLBs de subbloco para suportar subblocos de múltiplas páginas, enquanto os TLBs de subbloco podem suportar apenas subblocos de página única. Os VS-TLBs têm um alcance de TLB muito maior do que os TLBs de subbloco com um custo de um pequeno número de bits. Por último, propomos o VS-híbrido que substitui o TLB de subbloco parcial no esquema híbrido por um VS-TLB parcial. Ele suporta vários subblocos de páginas no esquema híbrido. Portanto, ele aproveita as vantagens do esquema híbrido e do tamanho expandido do subbloco. Os resultados da simulação mostram que os esquemas propostos geram um grande ganho de desempenho nos programas aplicativos de benchmark.
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Cheol Ho PARK, Daeyeon PARK, "Hybrid Schemes and Variable-Size Subblock TLBs: Aggressive Superpage Supports" in IEICE TRANSACTIONS on Information,
vol. E85-D, no. 10, pp. 1609-1618, October 2002, doi: .
Abstract: While superpages are an efficient solution to increase TLB reach, strong contraint for using superpages hinders the actual utilization. Two previous solutions, a partial-subblock TLB and the shadow memory were proposed to loose the contraint. A partial-subblock TLB looses only a small portion of the contraint and limits the superpage size at a cost. The shadow memory looses most of the constraint but introduces other serious problems. We propose three novel approaches to improve superpage supports. First, we propose a hybrid scheme which integrates both the shadow memory and a partial-subblock TLB, thereby enjoying the benefits inherited from both sides. The hybrid scheme has as high a superpage utilization as the shadow memory, and avoids most of the problems in the shadow memory by the virtue of partial-subblock TLB. Second, VS-TLBs are an extension of subblock TLBs to support multiple page subblocks, while subblock TLBs can support only single page subblocks. VS-TLBs have a much larger TLB reach than subblock TLBs with a cost of a small number of bits. Last, we propose VS-hybrid which replaces the partial-subblock TLB in the hybrid scheme with a partial VS-TLB. It supports multiple page subblocks in the hybrid scheme. Therefore, it takes both advantages of the hybrid scheme and the expanded subblock size. The simulation results show that the proposed schemes take a large amount of performance gain in the benchmark application programs.
URL: https://global.ieice.org/en_transactions/information/10.1587/e85-d_10_1609/_p
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@ARTICLE{e85-d_10_1609,
author={Cheol Ho PARK, Daeyeon PARK, },
journal={IEICE TRANSACTIONS on Information},
title={Hybrid Schemes and Variable-Size Subblock TLBs: Aggressive Superpage Supports},
year={2002},
volume={E85-D},
number={10},
pages={1609-1618},
abstract={While superpages are an efficient solution to increase TLB reach, strong contraint for using superpages hinders the actual utilization. Two previous solutions, a partial-subblock TLB and the shadow memory were proposed to loose the contraint. A partial-subblock TLB looses only a small portion of the contraint and limits the superpage size at a cost. The shadow memory looses most of the constraint but introduces other serious problems. We propose three novel approaches to improve superpage supports. First, we propose a hybrid scheme which integrates both the shadow memory and a partial-subblock TLB, thereby enjoying the benefits inherited from both sides. The hybrid scheme has as high a superpage utilization as the shadow memory, and avoids most of the problems in the shadow memory by the virtue of partial-subblock TLB. Second, VS-TLBs are an extension of subblock TLBs to support multiple page subblocks, while subblock TLBs can support only single page subblocks. VS-TLBs have a much larger TLB reach than subblock TLBs with a cost of a small number of bits. Last, we propose VS-hybrid which replaces the partial-subblock TLB in the hybrid scheme with a partial VS-TLB. It supports multiple page subblocks in the hybrid scheme. Therefore, it takes both advantages of the hybrid scheme and the expanded subblock size. The simulation results show that the proposed schemes take a large amount of performance gain in the benchmark application programs.},
keywords={},
doi={},
ISSN={},
month={October},}
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TY - JOUR
TI - Hybrid Schemes and Variable-Size Subblock TLBs: Aggressive Superpage Supports
T2 - IEICE TRANSACTIONS on Information
SP - 1609
EP - 1618
AU - Cheol Ho PARK
AU - Daeyeon PARK
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E85-D
IS - 10
JA - IEICE TRANSACTIONS on Information
Y1 - October 2002
AB - While superpages are an efficient solution to increase TLB reach, strong contraint for using superpages hinders the actual utilization. Two previous solutions, a partial-subblock TLB and the shadow memory were proposed to loose the contraint. A partial-subblock TLB looses only a small portion of the contraint and limits the superpage size at a cost. The shadow memory looses most of the constraint but introduces other serious problems. We propose three novel approaches to improve superpage supports. First, we propose a hybrid scheme which integrates both the shadow memory and a partial-subblock TLB, thereby enjoying the benefits inherited from both sides. The hybrid scheme has as high a superpage utilization as the shadow memory, and avoids most of the problems in the shadow memory by the virtue of partial-subblock TLB. Second, VS-TLBs are an extension of subblock TLBs to support multiple page subblocks, while subblock TLBs can support only single page subblocks. VS-TLBs have a much larger TLB reach than subblock TLBs with a cost of a small number of bits. Last, we propose VS-hybrid which replaces the partial-subblock TLB in the hybrid scheme with a partial VS-TLB. It supports multiple page subblocks in the hybrid scheme. Therefore, it takes both advantages of the hybrid scheme and the expanded subblock size. The simulation results show that the proposed schemes take a large amount of performance gain in the benchmark application programs.
ER -