RT Conference Proceedings
T1 Work in progress about enhancing the programmability and energy efficiency of storage in HPC and cloud environments
A1 Llopis Sanmillán, Pablo
A1 García Blas, Javier
A1 Isaila, Florin Daniel
A2 Carretero Pérez, Jesús
A2 García Blas, Javier
A2 Petcu, Dana
AB We present the work in progress for the PhD thesis titled “Enhancing the programmability and energy efficiency ofstorage in HPC and cloud environments”. In this thesis, we focus on studying and optimizing data movementacross different layers of the operating system’s I/O stack. We study the power consumption during I/O-intensiveworkloads using sophisticated software and hardware instrumentation, collecting time series data from internal ATXpower lines that feed every system component, and several run-time operating system metrics. Data explorationand data analysis reveal for each I/O access pattern various power and performance regimes. These regimes showhow power is used by the system as data moved through the I/O stack. We use this knowledge to build I/O powermodels that are able to predict power consumption for different I/O workloads, and optimize the CPU device driverthat manage performance states to obtain great power savings (over 30%). Finally, we develop new mechanisms andabstractions that allow co-located virtual machines to share data with each other more efficiently. Our virtualizeddata sharing solution reduces data movement among virtual domains, leading to energy savings I/O performanceimprovements.
SN 978-84-608-6309-0
YR 2016
FD 2016-02
LK https://hdl.handle.net/10016/22892
UL https://hdl.handle.net/10016/22892
LA eng
NO Proceedings of the First PhD Symposium on Sustainable Ultrascale Computing Systems (NESUS PhD 2016) Timisoara, Romania. February 8-11, 2016.
NO European Cooperation in Science and Technology. COST
DS e-Archivo
RD 17 jul. 2024