Xgi Technology Inc.

Shanghai Iluvatar Corex Semiconductor Co., Ltd.

Jinshan Zheng

Pingping Shao

YunXiao Zou

Yongliu Wang

Yile Sun

Haihua Zhai

Guofang Jiao

Jianbo Zhang

Chun Yu

Linglan Zhang

A data reuse method based on a convolutional neural network accelerator includes a tile scanning module receiving command information of a command module, the command information comprising a size of a CNN job to be divided into tile blocks; a tile scanning module according to a tile. The size of the tile generates the coordinates of the tile block and sends it to the memory request module; the memory request module generates a memory read request and sends the memory read request to the memory module; the memory module sequentially returns the tile block data to the input activation In the weight buffer unit, the input activation weight buffer unit saves the received tile block data to implement data reuse and transmits the received tile block data to the calculation processing unit PE.

Data reuse method based on convolutional neural network accelerator

A method and system for clearing depth and color buffers in a real time graphics rendering system. The method and system are able to improve both depth and color buffer clearing. The method and system may utilize a frame flag, a depth clearing module, and a fast color and frame flag clearing module. The system assigns a frame flag to each pixel, which is used to determine whether the current Z value for the pixel is valid. The frame flag may be attached to Z value in the depth buffer. Instead of filling entire depth and color buffers with background values, the system only fills the holes that were not drawn in the previous frame. The fast color and frame flag clearing module traverses a rectangular area, tile by tile, where a tile is a block of pixels, to determine whether each pixel is background by checking the frame flags that are read from the depth buffer. If at least one pixel of a tile is background, the module updates those pixels' color with background color by sending requests to memory interface.

System and method for clearing depth and color buffers in a real-time graphics rendering system

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Shanghai, China

Jinshan Zheng