统计并分别输出GPU使用情况的脚本。output是专门统计的，statistics是专门输出的，两个脚本放在一个目录下，只要运行statistics就可以。还附加了一本书。(Statistics and output scr ipts for GPU usage respectively. Output is special statistics, statistics is specialized output, two scr ipts in a directory, as long as running statistics.)