.. index:: pair: page; SigmoidBackward .. _doxid-dev_guide_op_sigmoidbackward: SigmoidBackward =============== General ~~~~~~~ SigmoidBackward operation computes gradient for Sigmoid. Operation attributes ~~~~~~~~~~~~~~~~~~~~ ==================================================================================================================== ============================================================================================== ===== ============================== ========= Attribute Name Descr ==================================================================================================================== ============================================================================================== ===== ============================== ========= :ref:`use_dst ` If true, use ``dst`` of Sigmoid operation to calculate the gradient. Otherwise, use ``src`` . bool ``true`` (default), ``false`` Optional ==================================================================================================================== ============================================================================================== ===== ============================== ========= Execution arguments ~~~~~~~~~~~~~~~~~~~ The inputs and outputs must be provided according to below index order when constructing an operation. Inputs ------ ====== ================== ========= Index Argu ====== ================== ========= 0 ``src`` / ``dst`` Required 1 ``diff_dst`` Required ====== ================== ========= Outputs ------- ====== ============= ========= Index Argu ====== ============= ========= 0 ``diff_src`` Required ====== ============= ========= Supported data types ~~~~~~~~~~~~~~~~~~~~ SigmoidBackward operation supports the following data type combinations. ===== ======= ===== Src Diff_d ===== ======= ===== f32 f32 f32 f16 f16 f16 bf16 bf16 bf16 ===== ======= =====