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

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 759
Author(s):  
Edel Díaz ◽  
Raúl Mateos ◽  
Emilio J. Bueno ◽  
Rubén Nieto

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.

2017 ◽  
Vol 125 ◽  
pp. 870-879 ◽  
Author(s):  
Yonggang Lei ◽  
Yazi Li ◽  
Shenglan Jing ◽  
Chongfang Song ◽  
Yongkang Lyu ◽  
...  

2013 ◽  
Vol 303-306 ◽  
pp. 1714-1720 ◽  
Author(s):  
Qing Ling Liu

A novel flexure hinge named right circular corner filleted half hybrid flexure hinge was advanced. Based on the Castigliano second theorem, the compliance formulas of the novel flexure hinge were formulated. The theoretical calculations and the finite element simulations were performed simultaneously, the similar results were obtained which indicated the correctness of the compliance formulas. The influence of the geometric parameters of the novel flexure hinge on its performance was analysed. Compared with right circular corner filleted double hybrid flexure hinge, the compliance and sensitivity to the load of the novel half hybrid flexure hinge were better than that of the right circular corner filleted double hybrid flexure hinge. All of the above analysis results indicated the novel flexure hinge are more suitable for application in the compact structure and large displacement.


2006 ◽  
Vol 2 (2) ◽  
pp. 110-119
Author(s):  
Wanren Chen ◽  
Hua Li ◽  
Xiaoshuang Chen

Compared with the traditional methods of removal SO2 from flue gas, the organic solvent absorption has some advantages as low investment, high SO2 absorption efficiency and desorption efficiency. For the industrial application of organic solvent absorption as soon as possible, some laboratory research on selectively removing SO2 and NOx from flue gas in the presence of CO2 and an enlarged experiment has been done with a novel absorbent of Mn(II)+ DMSO. The effect on desulfurization selectivity for absorbents is studied. And the regeneration capacities for absorbent are researched. The result shows that the novel absorbent has not only strong desulfurization efficiency, but also good selectivity for SO2 and CO2, the feasibility of desulfurization absorbent has been proved.


2013 ◽  
Vol 837 ◽  
pp. 228-233
Author(s):  
Iuliana Vintila

The present paper research performs an overwieved study regarding the engineering activities involved in the industrial design of the edible oil plant units. The objectives of the proposed smart engineering plan were to increase the oil extractability in the condition of process performance analysis of total integrated manufacturing facility, flexible tailor-made production, financial performance analysis and ecological industrial processing. Modern manufacturing operation via mechanical method of oilseeds pre-pressing associated with performant oilseeds preparation (drying, craking, dehulling, flaking) were considered to be analysed in the smart engineering for tailor-made end-product of higher commercial quality.


2016 ◽  
Author(s):  
Giovanni Giusi ◽  
Scige J. Liu ◽  
Emanuele Galli ◽  
Anna M. Di Giorgio ◽  
Maria Farina ◽  
...  

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