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references.bib
| @@ -9445,3 +9445,12 @@ pages={89--100}, | @@ -9445,3 +9445,12 @@ pages={89--100}, | ||
| 9445 | year={2009}, | 9445 | year={2009}, |
| 9446 | organization={IEEE} | 9446 | organization={IEEE} |
| 9447 | } | 9447 | } |
| 9448 | + | ||
| 9449 | +@incollection{tiwari2014modeling, | ||
| 9450 | +title={Modeling the Impact of Reduced Memory Bandwidth on HPC Applications}, | ||
| 9451 | +author={Tiwari, Ananta and Gamst, Anthony and Laurenzano, Michael A and Schulz, Martin and Carrington, Laura}, | ||
| 9452 | +booktitle={Euro-Par 2014 Parallel Processing}, | ||
| 9453 | +pages={63--74}, | ||
| 9454 | +year={2014}, | ||
| 9455 | +publisher={Springer} | ||
| 9456 | +} |
system_methodology.tex
| @@ -45,7 +45,8 @@ frequency and voltage; we extended Gem5 DVFS to incorporate memory frequency | @@ -45,7 +45,8 @@ frequency and voltage; we extended Gem5 DVFS to incorporate memory frequency | ||
| 45 | scaling. As shown in Figure~\ref{fig-system-block-diag}, Gem5 provides a DVFS | 45 | scaling. As shown in Figure~\ref{fig-system-block-diag}, Gem5 provides a DVFS |
| 46 | controller device that provides an interface to control frequency by the OS at | 46 | controller device that provides an interface to control frequency by the OS at |
| 47 | runtime. We developed a memory frequency governor similar to existing Linux CPU | 47 | runtime. We developed a memory frequency governor similar to existing Linux CPU |
| 48 | -frequency governors. | 48 | +frequency governors. Timing and current parameters of DRAM are scaled with its |
| 49 | +frequency as described in the technical note from Micron~\cite{micronpower-TN-url}. | ||
| 49 | %that are capable of tuning memory frequency at runtime. | 50 | %that are capable of tuning memory frequency at runtime. |
| 50 | The blocks that we added or significantly modified from Gem5's original | 51 | The blocks that we added or significantly modified from Gem5's original |
| 51 | implementation are shaded in Figure~\ref{fig-system-block-diag}. | 52 | implementation are shaded in Figure~\ref{fig-system-block-diag}. |