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A 32nm EGPU Parallel Multiprocessor Based on Co-issue and Multi-Dimensional Parallelism Architecture
Yang Wang,Li Zhou,Tao Sun,Yanhu Chen,Jia Wang,Yuanzhi Zhang,Yuanyuan Gao 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.5
In this paper, a Parallel Multiprocessor (PM) based on SIMT (Single Instruction and Multiple Threads) architecture is proposed. With co-issue architecture and multi-dimensional parallelism implemented in high-effective PM, Embedded Graphics Processing Unit (EGPU) provides great performance for various situations, such as general purpose computing, 3D scene rendering, and graphics processing. Application programs are departed into separated threads. Allocated by Thread Processing Unit (TPU), separated threads can be executed in parallel. Parallelism in different hierarchy and dimension are implemented by Multi-Dimensional Parallelism Processor (MD-PP), which has made a proper trade-off between performance and cost. Additionally, PM improves the hardware occupancy with its co-issue architecture and internal bus accessing mechanism to meet the demand of processing capability. Its unified shading architecture also helps to hide processing latency. PM can execute 4 basic operations in the best case and 2 in the worst case within each clock cycle. With 32nm process technology and 200MHz clock frequency, PM’s area is about 5104494um2, power consumption is about 101.838mW, and it can process nearly 28M vertices or fragments in average. Experimental results show that the MD-PP based PM can process data with high performance and get a balance between efficiency and hardware consumption simultaneously.
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Underwater contactless wet‑mateable connector using bowl‑shaped coils
Qichao Zhao,Tianlei Wang,Hui Zhi,Xin Wu,Yurui Zhang,Canjun Yang,Yanhu Chen 전력전자학회 2022 JOURNAL OF POWER ELECTRONICS Vol.22 No.7
Wet-mateable connectors enabling power and communication for underwater equipment are greatly favored for underwater systems. However, conventional underwater wet-mateable connectors with electrical contact conductors have the features of high cost, limited mate/de-mate times, and high risk of ground faults when being applied underwater, which limits their used. In this paper, a contactless underwater wet-mateable connector with bowl-shaped couplers was proposed, and an equivalent circuit for inductive power transmission was modeled and analyzed. Then the mathematical expression of the magnetic induction intensity of the bowl-shaped coil was derived. The parameters including co , zco , and s0 of the coil were analyzed and optimized to attain better performance and lower cost. A prototype was built and tested. Results showed that it can transmit power up to 1125 W with an efficiency of 85%. In addition, it can achieve a data rate up to 6 MB/s under a water pressure of 20 MPa.
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