aclnnLogdet

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产品支持情况

产品 是否支持
Ascend 950PR/Ascend 950DT
Atlas A3 训练系列产品/Atlas A3 推理系列产品
Atlas A2 训练系列产品/Atlas A2 推理系列产品
Atlas 200I/500 A2 推理产品 ×
Atlas 推理系列产品 ×
Atlas 训练系列产品

功能说明

  • 接口功能:计算输入self的行列式的自然对数。

  • 计算公式:

    out=log(det(self))out = log(det(self))

    • 如果det(self)det(self)的结果是0,则out=−infout = -inf
    • 如果det(self)det(self)的结果是负数,则out=nanout = nan

函数原型

每个算子分为两段式接口,必须先调用aclnnLogdetGetWorkspaceSize接口获取计算所需workspace大小以及包含了算子计算流程的执行器,再调用aclnnLogdet接口执行计算。

aclnnStatus aclnnLogdetGetWorkspaceSize(
  const aclTensor* self,
  aclTensor*       out,
  uint64_t*        workspaceSize,
  aclOpExecutor**  executor)
aclnnStatus aclnnLogdet(
  void*            workspace,
  uint64_t         workspaceSize,
  aclOpExecutor*   executor,
  aclrtStream      stream)

aclnnLogdetGetWorkspaceSize

  • 参数说明

    参数名 输入/输出 描述 使用说明 数据类型 数据格式 维度(shape) 非连续Tensor
    self(aclTensor*) 输入 公式中的self,输入矩阵。 shape满足(*, n, n)形式,其中*表示0或更多维度的batch。 FLOAT、DOUBLE、COMPLEX64、COMPLEX128 ND 2-8
    out(aclTensor*) 输出 公式中的out,行列式自然对数结果。 需要和self满足推导关系,shape与self的batch一致。 FLOAT、DOUBLE、COMPLEX64、COMPLEX128 ND 与self的batch一致
    workspaceSize(uint64_t*) 输出 返回需要在Device侧申请的workspace大小。 - - - - -
    executor(aclOpExecutor**) 输出 返回op执行器,包含了算子计算流程。 - - - - -
  • 返回值

    aclnnStatus:返回状态码,具体参见aclnn返回码

    第一段接口完成入参校验,出现以下场景时报错:

    返回值 错误码 描述
    ACLNN_ERR_PARAM_NULLPTR 161001 传入的self、out中存在空指针。
    ACLNN_ERR_PARAM_INVALID 161002 self或out的数据类型不在支持的范围之内。
    self的shape小于2维或者大于8维或者最后两维的大小不一致。
    out的shape和self的batch大小不一致。

aclnnLogdet

  • 参数说明

    参数名 输入/输出 描述
    workspace 输入 在Device侧申请的workspace内存地址。
    workspaceSize 输入 由第一段接口 aclnnLogdetGetWorkspaceSize 获取的workspace大小。
    executor 输入 op执行器,包含了算子计算流程。
    stream 输入 指定执行任务的Stream。
  • 返回值

    aclnnStatus:返回状态码,具体参见aclnn返回码

约束说明

  • 确定性说明:aclnnLogdet默认确定性实现。
  • 输入数据中不支持存在溢出值Inf/NaN

调用示例

示例代码如下,仅供参考,具体编译和执行过程请参考编译与运行样例

#include <iostream>
#include <vector>
#include "acl/acl.h"
#include "aclnnop/aclnn_logdet.h"

#define CHECK_RET(cond, return_expr) \
  do {                               \
    if (!(cond)) {                   \
      return_expr;                   \
    }                                \
  } while (0)

#define LOG_PRINT(message, ...)     \
  do {                              \
    printf(message, ##__VA_ARGS__); \
  } while (0)

int64_t GetShapeSize(const std::vector<int64_t>& shape)
{
  int64_t shapeSize = 1;
  for (auto i : shape) {
    shapeSize *= i;
  }
  return shapeSize;
}

int Init(int32_t deviceId, aclrtStream* stream)
{
  // 固定写法,资源初始化
  auto ret = aclInit(nullptr);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclInit failed. ERROR: %d\n", ret); return ret);
  ret = aclrtSetDevice(deviceId);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSetDevice failed. ERROR: %d\n", ret); return ret);
  ret = aclrtCreateStream(stream);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtCreateStream failed. ERROR: %d\n", ret); return ret);
  return 0;
}

template <typename T>
int CreateAclTensor(
    const std::vector<T>& hostData, const std::vector<int64_t>& shape, void** deviceAddr, aclDataType dataType,
    aclTensor** tensor)
{
  auto size = GetShapeSize(shape) * sizeof(T);
  // 调用aclrtMalloc申请device侧内存
  auto ret = aclrtMalloc(deviceAddr, size, ACL_MEM_MALLOC_HUGE_FIRST);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMalloc failed. ERROR: %d\n", ret); return ret);
  // 调用aclrtMemcpy将host侧数据拷贝到device侧内存上
  ret = aclrtMemcpy(*deviceAddr, size, hostData.data(), size, ACL_MEMCPY_HOST_TO_DEVICE);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMemcpy failed. ERROR: %d\n", ret); return ret);

  // 计算连续tensor的 strides
  std::vector<int64_t> strides(shape.size(), 1);
  for (int64_t i = shape.size() - 2; i >= 0; i--) {
    strides[i] = shape[i + 1] * strides[i + 1];
  }

  // 调用aclCreateTensor接口创建 aclTensor
  *tensor = aclCreateTensor(
      shape.data(), shape.size(), dataType, strides.data(), 0, aclFormat::ACL_FORMAT_ND, shape.data(), shape.size(),
      *deviceAddr);
  return 0;
}

aclError InitAcl(int32_t deviceId, aclrtStream* stream)
{
  auto ret = Init(deviceId, stream);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("Init acl failed. ERROR: %d\n", ret); return ret);
  return ACL_SUCCESS;
}

aclError CreateInputs(
    std::vector<int64_t>& selfShape, std::vector<int64_t>& outShape, void** selfDeviceAddr, void** outDeviceAddr,
    aclTensor** self, aclTensor** out)
{
  std::vector<double> selfHostData = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
  std::vector<double> outHostData = {0, 0, 0};

  auto ret = CreateAclTensor(selfHostData, selfShape, selfDeviceAddr, aclDataType::ACL_DOUBLE, self);
  CHECK_RET(ret == ACL_SUCCESS, return ret);

  ret = CreateAclTensor(outHostData, outShape, outDeviceAddr, aclDataType::ACL_DOUBLE, out);
  CHECK_RET(ret == ACL_SUCCESS, return ret);

  return ACL_SUCCESS;
}

aclError ExecOpApi(
    aclTensor* self, aclTensor* out, void** workspaceAddrOut, uint64_t& workspaceSize, void* outDeviceAddr,
    std::vector<int64_t>& outShape, aclrtStream stream)
{
  aclOpExecutor* executor;

  auto ret = aclnnLogdetGetWorkspaceSize(self, out, &workspaceSize, &executor);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnLogdetGetWorkspaceSize failed. ERROR: %d\n", ret); return ret);

  void* workspaceAddr = nullptr;
  if (workspaceSize > 0) {
    ret = aclrtMalloc(&workspaceAddr, workspaceSize, ACL_MEM_MALLOC_HUGE_FIRST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("allocate workspace failed. ERROR: %d\n", ret); return ret);
  }
  *workspaceAddrOut = workspaceAddr;

  ret = aclnnLogdet(workspaceAddr, workspaceSize, executor, stream);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnLogdet failed. ERROR: %d\n", ret); return ret);

  ret = aclrtSynchronizeStream(stream);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSynchronizeStream failed. ERROR: %d\n", ret); return ret);

  auto size = GetShapeSize(outShape);
  std::vector<double> resultData(size, 0);

  ret = aclrtMemcpy(
      resultData.data(), resultData.size() * sizeof(resultData[0]), outDeviceAddr, size * sizeof(resultData[0]),
      ACL_MEMCPY_DEVICE_TO_HOST);
  CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return ret);

  for (int64_t i = 0; i < size; i++) {
    LOG_PRINT("result[%ld] is: %lf\n", i, resultData[i]);
  }

  return ACL_SUCCESS;
}

int main()
{
  int32_t deviceId = 0;
  aclrtStream stream;

  auto ret = InitAcl(deviceId, &stream);
  CHECK_RET(ret == ACL_SUCCESS, return ret);

  std::vector<int64_t> selfShape = {3, 2, 2};
  std::vector<int64_t> outShape = {3};

  void* selfDeviceAddr = nullptr;
  void* outDeviceAddr = nullptr;

  aclTensor* self = nullptr;
  aclTensor* out = nullptr;

  ret = CreateInputs(selfShape, outShape, &selfDeviceAddr, &outDeviceAddr, &self, &out);
  CHECK_RET(ret == ACL_SUCCESS, return ret);

  uint64_t workspaceSize = 0;
  void* workspaceAddr = nullptr;

  ret = ExecOpApi(self, out, &workspaceAddr, workspaceSize, outDeviceAddr, outShape, stream);
  CHECK_RET(ret == ACL_SUCCESS, return ret);

  // 释放Tensor
  aclDestroyTensor(self);
  aclDestroyTensor(out);

  // 释放device内存
  aclrtFree(selfDeviceAddr);
  aclrtFree(outDeviceAddr);

  if (workspaceSize > 0) {
    aclrtFree(workspaceAddr);
  }

  aclrtDestroyStream(stream);
  aclrtResetDevice(deviceId);
  aclFinalize();

  return 0;
}