[object Object]

[object Object]undefined[object Object]

• Description: Solves a system of equations with a square upper or lower triangular invertible matrix A and multiple right-hand sides b.
• Formula:$$AX = b$$ $A$ is an upper triangular matrix (or a lower triangular matrix if upper=false) and does not have zeros on the main diagonal. $b,A$ can be two-dimensional matrices or batches of two-dimensional matrices. If the inputs are batches, then returns batched outputs X. If the main diagonal of $A$ contains [object Object] or elements close to [object Object], and [object Object] is [object Object], the output result may contain $NaN$.

[object Object]

Each operator has calls. First, [object Object] is called to obtain the workspace size required for computation and the executor that contains the operator computation process. Then, [object Object] is called to perform computation.

• [object Object]
• [object Object]

[object Object]

• Parameters

  • [object Object] (aclTensor*, compute input): $b$ in the formula. The data type can be FLOAT, DOUBLE, COMPLEX64, or COMPLEX128, and must be the same as that of [object Object]. The shape supports 2 to 8 dimensions. are supported. The supports ND. self[-2]=A[-2]. The dimensions (except the last two dimensions) of [object Object] and [object Object] must meet the .

  • [object Object] (aclTensor*, compute input): $A$ in the formula. The data type can be FLOAT, DOUBLE, COMPLEX64, or COMPLEX128, and must be the same as that of [object Object]. The shape supports 2 to 8 dimensions. are supported. The supports ND. The last two axes are equal. The dimensions (except the last two dimensions) of [object Object] and [object Object] must meet the .

  • [object Object] (bool, compute input): computation attribute. The default value is [object Object], indicating that [object Object] is an upper triangular matrix. When [object Object] is set to [object Object], [object Object] is a lower triangular matrix.

  • [object Object] (bool, compute input): computation attribute. The default value is [object Object]. When [object Object] is [object Object], $A^T X=b$ is computed.

  • [object Object] (bool, compute input): computation attribute. The default value is [object Object]. When [object Object] is set to [object Object], the elements on the main diagonal of [object Object] are considered as 1 instead of being referenced from [object Object]. When [object Object] is set to [object Object], the data types of the inputs [object Object] and [object Object] and the outputs [object Object] and [object Object] support only FLOAT.

  • [object Object] (aclTensor *, compute output): $X$ in the formula. The data type can be FLOAT, DOUBLE, COMPLEX64, or COMPLEX128, and must be the same as that of [object Object]. are supported. The supports ND. The shapes of [object Object] and broadcasted [object Object],[object Object] must meet the $AX=b$ constraint. The shapes of [object Object] and [object Object] meet the broadcast relationship. The last axis dim=self[-1].

  • [object Object] (aclTensor *, compute output): copy of the upper triangle (lower triangle) of [object Object] after broadcasting. The data type can be FLOAT, DOUBLE, COMPLEX64, or COMPLEX128, and must be the same as that of [object Object]. are supported. The supports ND. The shapes of [object Object] and [object Object] meet the broadcast relationship. The last axis dim=A[-1].

  • [object Object] (uint64_t*, output): size of the workspace to be allocated on the device.

  • [object Object] (aclOpExecutor **, output): operator executor, containing the operator computation process.

• Returns

  [object Object]: status code. For details, see .

[object Object]

• Parameters

  • [object Object] (void *, input): address of the workspace to be allocated on the device.

  • [object Object] (uint64_t, input): size of the workspace to be allocated on the device, which is obtained by calling the first-phase API [object Object].

  • [object Object] (aclOpExecutor *, input): operator executor, containing the operator computation process.

  • [object Object] (aclrtStream, input): stream for executing the task.

• Returns

  [object Object]: status code. For details, see .

[object Object]

• Deterministic computation:
  • [object Object] defaults to a deterministic implementation.

[object Object]

The following example is for reference only. For details, see .