.. index:: pair: page; MaxPoolBackward .. _doxid-dev_guide_op_maxpoolbackward: MaxPoolBackward =============== General ~~~~~~~ AvgPoolBackward operation accepts :math:`\src` tensor and :math:`\diffdst` tensor, and calculates :math:`\diffsrc` tensor. Operation attributes ~~~~~~~~~~~~~~~~~~~~ ======================================================================================================================== ============================================================================================================================================================================================================ ======= ===================================================================================== ========= Attribute Name De ======================================================================================================================== ============================================================================================================================================================================================================ ======= ===================================================================================== ========= :ref:`strides ` Controls the strides the window is moved. s64 A s64 list containing positive values Required :ref:`pads_begin ` Controls number of zeros to be add to the front/top/left of spatial dimensions, the attribute will be ignored when ``auto_pad`` attribute is specified to ``same_upper`` , ``same_lower`` or ``valid`` . s64 A s64 list containing non-negative values Required :ref:`pads_end ` Controls number of zeros to be add to the back/bottom/right of spatial dimensions, the attribute will be ignored when ``auto_pad`` attribute is specified to ``same_upper`` , ``same_lower`` or ``valid`` . s64 A s64 list containing non-negative values Required :ref:`kernel ` Size of pooling window s64 A s64 list containing positive values Required :ref:`auto_pad ` Controls how the paddings are calculated. string ``none`` (default), ``same_upper`` , ``same_lower`` , ``valid`` Optional :ref:`dilations ` Denotes the distance in width and height between elements in the window. s64 A s64 list containing positive values, a list of ``1`` s (default) means no dilation Optional :ref:`data_format ` Controls how to interpret the shape of ``src`` and ``dst`` . string ``NCX`` , ``NXC`` (default) Optional ======================================================================================================================== ============================================================================================================================================================================================================ ======= ===================================================================================== ========= Execution arguments ~~~~~~~~~~~~~~~~~~~ The inputs and outputs must be provided according to below index order when constructing an operation. Inputs ------ ====== ============= ========= Index Argu ====== ============= ========= 0 ``src`` Required 1 ``diff_dst`` Required ====== ============= ========= Outputs ------- ====== ============= ========= Index Argu ====== ============= ========= 0 ``diff_src`` Required ====== ============= ========= Supported data types ~~~~~~~~~~~~~~~~~~~~ MaxPoolBackward operation supports the following data type combinations. ===== ===== ===== Src Diff ===== ===== ===== f32 f32 f32 bf16 bf16 bf16 f16 f16 f16 ===== ===== =====