blas.py 文件源码

def make_node(self, kern, topgrad, shape=None):
        ctx_name = infer_context_name(kern, topgrad)
        kern = as_gpuarray_variable(kern, ctx_name)
        topgrad = as_gpuarray_variable(topgrad, ctx_name)
        if kern.type.ndim != 4:
            raise TypeError('kern must be 4D tensor')
        if topgrad.type.ndim != 4:
            raise TypeError('topgrad must be 4D tensor')
        if self.subsample != (1, 1) and shape is None:
            raise ValueError('shape must be given if subsample != (1, 1)')
        height_width = [shape[0], shape[1]] if self.subsample != (1, 1) else []
        if height_width:
            assert shape[0].ndim == 0
            assert shape[1].ndim == 0

        broadcastable = [topgrad.type.broadcastable[0], kern.type.broadcastable[1],
                         False, False]
        return Apply(self, [kern, topgrad] + height_width, [GpuArrayType(dtype=topgrad.dtype,
                                                                         context_name=ctx_name,
                                                                         broadcastable=broadcastable)()])