Overcoming Virtualization Overheads for Large-vCPU Virtual Machines

Kilic, Ozgur O.; Doddamani, Spoorti; Bhat, Aprameya; Bagdi, Hardik; Gopalan, Kartik

doi:10.1109/mascots.2018.00042

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…Therefore, its simulation speed is not as high as QEMU or OVPSim, both of which take advantage of a Dynamic Binary Translation (DBT) engine or the Kernel-based Virtual Machine (KVM) engine. Although the use of KVM is extended to virtualize desktop machines [32], its use to verify embedded devices is not very extended.…”

Section: Background and Proposal Description 21 Hardware/software Cmentioning

confidence: 99%

Enabling Parallelized-QEMU for Hardware/Software Co-Simulation Virtual Platforms

et al. 2021

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Presently, the trend is to increase the number of cores per chip. This growth is appreciated in Multi-Processor System-On-Chips (MPSoC), composed of more cores in heterogeneous and homogeneous architectures in recent years. Thus, the difficulty of verification of this type of system has been great. The hardware/software co-simulation Virtual Platforms (VP) are presented as a perfect solution to address this complexity, allowing verification by simulation/emulation of software and hardware in the same environment. Some works parallelized the software emulator to reduce the verification times. An example of this parallelization is the QEMU (Quick EMUlator) tool. However, there is no solution to synchronize QEMU with the hardware simulator in this new parallel mode. This work analyzes the current software emulators and presents a new method to allow an external synchronization of QEMU in its parallelized mode. Timing details of the cores are taken into account. In addition, performance analysis of the software emulator with the new synchronization mechanism is presented, using: (1) a boot Linux for MPSoC Zynq−7000 (dual-core ARM Cortex-A9) (Xilinx, San Jose, CA, USA); (2) an FPGA-Linux co-simulation of a power grid monitoring system that is subsequently implemented in an industrial application. The results show that the novel synchronization mechanism does not add any appreciable computational load and enables parallelized-QEMU in hardware/software co-simulation virtual platforms.

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Section: Background and Proposal Description 21 Hardware/software Cmentioning

confidence: 99%