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DRAM Characterization under Relaxed Refresh Period Considering System Level Effects within a Commodity Server

Lev Mukhanov, Konstantinos Tovletoglou, Dimitrios S. Nikolopoulos, Georgios Karakonstantis
2018 2018 IEEE 24th International Symposium on On-Line Testing And Robust System Design (IOLTS)  
In this paper, we develop a first of its kind experimental framework based on a state-of-the-art 64-bit ARM based server with Linux OS, in which we enabled the DRAM characterization under relaxed refresh  ...  DRAM Characterization under Relaxed Refresh Period Considering System Level Effects within a Commodity Server Abstract-Today's rapid generation of data and the increased need for higher memory capacity  ... 
doi:10.1109/iolts.2018.8474184 dblp:conf/iolts/MukhanovTNK18 fatcat:zcruhoy64bdajdtizvxa3xgptu

Measuring and Exploiting Guardbands of Server-Grade ARMv8 CPU Cores and DRAMs

Konstantinos Tovletoglou, Lev Mukhanov, Georgios Karakonstantis, Athanasios Chatzidimitriou, George Papadimitriou, Manolis Kaliorakis, Dimitris Gizopoulos, Zacharias Hadjilambrou, Yiannakis Sazeides, Alejandro Lampropulos, Shidhartha Das, Phong Vo
2018 2018 48th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops (DSN-W)  
ACKNOWLEDGEMENTS The work presented was partially supported by the UniServer project under the EU Horizon 2020 programme and grant no. 688540.  ...  DRAM Characterization In our experiments, we characterize 72 DRAM chips [18] operating at 50 °C and 60 °C, under 35x relaxed refresh period, from the nominal 64ms to 2.283s, using the mentioned DPBenches  ...  We measure the guradbands in 8 cores of ARMv8 CPU chips, and 3 different sigma chips manufactured in 28nm process based on an automated characterization methodology and by using various synthetic benchmarks  ... 
doi:10.1109/dsn-w.2018.00013 dblp:conf/dsn/TovletoglouMKCP18 fatcat:s3elzfsjojgtdmulaln5goec5m

HaRMony

Konstantinos Tovletoglou, Lev Mukhanov, Dimitrios S. Nikolopoulos, Georgios Karakonstantis
2020 Proceedings of the Twenty-Fifth International Conference on Architectural Support for Programming Languages and Operating Systems  
This work was funded by the H2020 Framework Program of the European Union through the UniServer Project (Grant Agreement 688540, http://www.uniserver2020.eu) and OpreComp project (Grant Agreement 732631  ...  Acknowledgments The authors thank the anonymous reviewers and our shepherd Michael Swift for their insightful comments and suggestions.  ...  We implement HRM on an energy efficient ARMv8-based server which makes the obtained energy savings even more remarkable.  ... 
doi:10.1145/3373376.3378489 dblp:conf/asplos/TovletoglouMNK20 fatcat:w6u5b5p66feuri6fxlzdcpsmve