CUDA's Mapped Memory to Support I/O Functions on GPU

查看全文 作　　者：Wei [1]Wu;Fengbin [1]Qi;Wangquan [1]He;Shanshan [1]Wang 机构地区：[1]Jiangnan Institute of Computing Technology 出　　处：《Tsinghua Science and Technology》索引2013年第18卷第6期,共11页 基　　金：supported in part by the National High-Tech Research and Development(863)Program(No.2012AAO10903) 摘　　要：The API interfaces provided by CUDA help programmers to get high performance CUDA applications in GPU,but they cannot support most I/O operations in device codes.The characteristics of CUDA’s mapped memory are used here to create a dynamic polling service model in the host which can satisfy most I/O functions such as read/write file and'printf'.The technique to implement these I/O functions has some influence on the performance of the original applications.These functions quickly respond to the users’I/O requirements with the'printf'performance better than CUDA’s.An easy and effective real-time method is given for users to debug their programs using the I/O functions.These functions improve productivity of converting legacy C/C++codes to CUDA and broaden CUDA’s functions. 关 键 词：GPU 内存 映射 应用程序 API接口 性能比 服务模式 快速响应