源项目仓：https://gitee.com/ascend/samples/tree/master/operator/ascendc/0_introduction/20_mmad_kernellaunch目标项目仓：https://gitee.com/ascend/cann-ops/tree/master/src/math/mmadmmad 算子介绍:A、B为源操作数，A为左矩阵，形状为[M, K