单步调试

用户需要了解代码执行具体情况时，可使用thread step-over命令使用示例逐行执行以进行单步调试，或执行step in命令可进入函数内部进行调试，或可执行finish（step out）命令返回函数调用点的下一行继续调试。

前提条件

算子编译时，使用--cce-ignore-always-inline=true的编译选项。

thread step-over命令使用示例

  1. 将断点打在需要调试的位置，并运行。打断点的具体操作请参见断点设置。

    (msdebug) r       // 运行
Process 177943 launched: '${INSTALL_DIR}/projects/mix/matmul_leakyrelu.fatbin' (aarch64)
[Launch of Kernel matmul_leakyrelu_custom on Device 1]
Process 177943 stopped
[Switching to focus on Kernel matmul_leakyrelu_custom, CoreId 44, Type aiv]
* thread #1, name = 'matmul_leakyrel', stop reason = breakpoint 1.2
    frame #0: 0x000000000000f01c device_debugdata`_ZN17MatmulLeakyKernelIDhDhffE10CalcOffsetEiiRK11TCubeTilingRiS4_S4_S4__mix_aiv(this=0x0000000000217b60, blockIdx=0, usedCoreNum=2, tiling=0x0000000000217e28, offsetA=0x00000000002175c8, offsetB=0x00000000002175c4, offsetC=0x00000000002175c0, offsetBias=0x00000000002175bc) at matmul_leakyrelu_kernel.cpp:129:15
   126
   127      offsetA = mCoreIndx * tiling.Ka * tiling.singleCoreM;
   128      offsetB = nCoreIndx * tiling.singleCoreN;             
-> 129      offsetC = mCoreIndx * tiling.N * tiling.singleCoreM + nCoreIndx * tiling.singleCoreN;        //断点位置
   130      offsetBias = nCoreIndx * tiling.singleCoreN;
   131  }
   132
(msdebug)

  2. 输入next或n命令后，开始单步执行。

    (msdebug) n
Process 177943 stopped
[Switching to focus on Kernel matmul_leakyrelu_custom, CoreId 44, Type aiv]
* thread #1, name = 'matmul_leakyrel', stop reason = step over   //   通过回显可查看pc的位置，表示单步成功 
    frame #0: 0x000000000000f048 device_debugdata`_ZN17MatmulLeakyKernelIDhDhffE10CalcOffsetEiiRK11TCubeTilingRiS4_S4_S4__mix_aiv(this=0x0000000000217b60, blockIdx=0, usedCoreNum=2, tiling=0x0000000000217e28, offsetA=0x00000000002175c8, offsetB=0x00000000002175c4, offsetC=0x00000000002175c0, offsetBias=0x00000000002175bc) at matmul_leakyrelu_kernel.cpp:130:18
   127      offsetA = mCoreIndx * tiling.Ka * tiling.singleCoreM;
   128      offsetB = nCoreIndx * tiling.singleCoreN;
   129      offsetC = mCoreIndx * tiling.N * tiling.singleCoreM + nCoreIndx * tiling.singleCoreN;
-> 130      offsetBias = nCoreIndx * tiling.singleCoreN;
   131  }

  3. 输入ascend info cores命令，查看所有核的PC信息和停止原因 。

    (msdebug) ascend info cores
  CoreId  Type  Device Stream Task Block         PC               stop reason
   12     aic      1     3     0     0     0x12c0c00f03b0         breakpoint 1.2
*  44     aiv      1     3     0     0     0x12c0c00f8048         step over               //* 代表当前正在运行的核
   45     aiv      1     3     0     0     0x12c0c00f801c         breakpoint 1.2
    • 当前核的停止原因既有单步调试又有断点时，将展示为breakpoint。
    • 若运行程序出现卡顿的现象，可以通过键盘输入“CTRL+C”中断运行程序 。运行卡顿的原因可能是以下情况：
      • 用户程序本身存在死循环，需要通过修复程序解决。
      • 算子使用了同步类指令。

  4. 调试完以后，执行q命令并输入Y或y结束调试。

    (msdebug) q
Quitting LLDB will kill one or more processes. Do you really want to proceed: [Y/n] y

thread step-in和thread step-out命令使用示例

  1. 将断点打在需要调试的位置，并运行。打断点的具体操作请参见断点设置。

    (msdebug) r                // 运行
Process 180938 launched: '${INSTALL_DIR}/test/mstt/sample/normal_sample/mix/matmul_leakyrelu.fatbin' (aarch64)
[Launch of Kernel matmul_leakyrelu_custom on Device 1]
Process 180938 stopped
[Switching to focus on Kernel matmul_leakyrelu_custom, CoreId 46, Type aiv]
* thread #1, name = 'matmul_leakyrel', stop reason = breakpoint 1.1
    frame #0: 0x000000000000e948 device_debugdata`_ZN17MatmulLeakyKernelIDhDhffE7ProcessEPN7AscendC5TPipeE_mix_aiv(this=0x000000000021fb60, pipe=0x000000000021f6a8) at matmul_leakyrelu_kernel.cpp:83:9
   80       while (matmulObj.template Iterate<true>()) {
   81           MatmulCompute();
   82           LeakyReluCompute();
-> 83           CopyOut(computeRound);
   84           computeRound++;
   85       }
   86       matmulObj.End();

  2. 用户输入step或s后，开始进入函数内部进行执行。

    (msdebug) s
Process 180938 stopped
[Switching to focus on Kernel matmul_leakyrelu_custom, CoreId 46, Type aiv]
* thread #1, name = 'matmul_leakyrel', stop reason = step in
    frame #0: 0x000000000000febc device_debugdata`_ZN17MatmulLeakyKernelIDhDhffE7CopyOutEj_mix_aiv(this=0x000000000021fb60, count=0) at matmul_leakyrelu_kernel.cpp:106:5
   103  template <typename aType, typename bType, typename cType, typename biasType>
   104  __aicore__ inline void MatmulLeakyKernel<aType, bType, cType, biasType>::CopyOut(uint32_t count)
   105  {
-> 106      reluOutQueue_.DeQue<cType>();
   107      const uint32_t roundM = tiling.singleCoreM / tiling.baseM;
   108      const uint32_t roundN = tiling.singleCoreN / tiling.baseN;
   109      uint32_t startOffset = (count % roundM * tiling.baseM * tiling.N + count / roundM * tiling.baseN);

  3. 输入ascend info cores命令，查看所有核的PC信息和停止原因 。

    (msdebug) ascend info cores
  CoreId  Type  Device Stream Task Block         PC               stop reason
   13     aic      1     3     0     0     0x12c0c00f1f88         breakpoint 1.1
*  46     aiv      1     3     0     0     0x12c0c00f8ebc         step in          //*代表当前正在运行的核
   47     aiv      1     3     0     0     0x12c0c00f8d3c         breakpoint 1.1

    当前核的停止原因既有调试函数又有断点时，将展示为breakpoint。

  4. 调试完copyout函数后，运行finish或step out命令退出copyout函数，并返回主程序继续执行。

    (msdebug) finish
Process 180938 stopped
[Switching to focus on Kernel matmul_leakyrelu_custom, CoreId 46, Type aiv]
* thread #1, name = 'matmul_leakyrel', stop reason = step out
    frame #0: 0x000000000000e950 device_debugdata`_ZN17MatmulLeakyKernelIDhDhffE7ProcessEPN7AscendC5TPipeE_mix_aiv(this=0x000000000021fb60, pipe=0x000000000021f6a8) at matmul_leakyrelu_kernel.cpp:84:21
   81           MatmulCompute();
   82           LeakyReluCompute();
   83           CopyOut(computeRound);
-> 84           computeRound++;
   85       }
   86       matmulObj.End();
   87   }

父主题： 算子调试（msDebug）