import torch
from torch._inductor.select_algorithm import extern_kernels
import triton
import triton.language as tl
from torch._inductor.runtime.triton_heuristics import grid
from torch._C import _cuda_getCurrentRawStream as get_raw_stream
import torch.nn as nn
from functools import partial
from copy import deepcopy
from torch.nn.init import _calculate_correct_fan
assert_size_stride = torch._C._dynamo.guards.assert_size_stride
empty_strided_cuda = torch._C._dynamo.guards._empty_strided_cuda
reinterpret_tensor = torch._C._dynamo.guards._reinterpret_tensor


@triton.jit
def triton_poi_fused_mul_sqrt_0(in_ptr0, out_ptr0, xnumel, XBLOCK: tl.constexpr
    ):
    xnumel = 16
    xoffset = tl.program_id(0) * XBLOCK
    xindex = xoffset + tl.arange(0, XBLOCK)[:]
    xmask = xindex < xnumel
    x0 = xindex
    tmp0 = tl.load(in_ptr0 + x0, xmask)
    tmp1 = 0.5
    tmp2 = tmp0 * tmp1
    tmp3 = 1.0
    tmp4 = tmp2 * tmp3
    tl.store(out_ptr0 + x0, tmp4, xmask)


@triton.jit
def triton_poi_fused_mul_1(in_ptr0, out_ptr0, xnumel, XBLOCK: tl.constexpr):
    xnumel = 4
    xoffset = tl.program_id(0) * XBLOCK
    xindex = xoffset + tl.arange(0, XBLOCK)[:]
    xmask = xindex < xnumel
    x0 = xindex
    tmp0 = tl.load(in_ptr0 + x0, xmask)
    tmp1 = 1.0
    tmp2 = tmp0 * tmp1
    tl.store(out_ptr0 + x0, tmp2, xmask)


def call(args):
    primals_1, primals_2, primals_3 = args
    args.clear()
    assert_size_stride(primals_1, (4, 4), (4, 1))
    assert_size_stride(primals_2, (4, 4), (4, 1))
    assert_size_stride(primals_3, (4,), (1,))
    with torch.cuda._DeviceGuard(0):
        torch.cuda.set_device(0)
        buf0 = empty_strided_cuda((4, 4), (4, 1), torch.float32)
        get_raw_stream(0)
        triton_poi_fused_mul_sqrt_0[grid(16)](primals_2, buf0, 16, XBLOCK=
            16, num_warps=1, num_stages=1)
        del primals_2
        buf1 = empty_strided_cuda((4,), (1,), torch.float32)
        triton_poi_fused_mul_1[grid(4)](primals_3, buf1, 4, XBLOCK=4,
            num_warps=1, num_stages=1)
        del primals_3
        buf2 = empty_strided_cuda((4, 4), (4, 1), torch.float32)
        extern_kernels.addmm(buf1, primals_1, reinterpret_tensor(buf0, (4, 
            4), (1, 4), 0), alpha=1, beta=1, out=buf2)
        del buf1
    return buf2, buf0, primals_1


def equalized_lr(module, name='weight', gain=2 ** 0.5, mode='fan_in',
    lr_mul=1.0):
    """Equalized Learning Rate.

    This trick is proposed in:
    Progressive Growing of GANs for Improved Quality, Stability, and Variation

    The general idea is to dynamically rescale the weight in training instead
    of in initializing so that the variance of the responses in each layer is
    guaranteed with some statistical properties.

    Note that this function is always combined with a convolution module which
    is initialized with :math:`\\mathcal{N}(0, 1)`.

    Args:
        module (nn.Module): Module to be wrapped.
        name (str | optional): The name of weights. Defaults to 'weight'.
        mode (str, optional): The mode of computing ``fan`` which is the
            same as ``kaiming_init`` in pytorch. You can choose one from
            ['fan_in', 'fan_out']. Defaults to 'fan_in'.

    Returns:
        nn.Module: Module that is registered with equalized lr hook.
    """
    EqualizedLR.apply(module, name, gain=gain, mode=mode, lr_mul=lr_mul)
    return module


class EqualizedLR:
    """Equalized Learning Rate.

    This trick is proposed in:
    Progressive Growing of GANs for Improved Quality, Stability, and Variation

    The general idea is to dynamically rescale the weight in training instead
    of in initializing so that the variance of the responses in each layer is
    guaranteed with some statistical properties.

    Note that this function is always combined with a convolution module which
    is initialized with :math:`\\mathcal{N}(0, 1)`.

    Args:
        name (str | optional): The name of weights. Defaults to 'weight'.
        mode (str, optional): The mode of computing ``fan`` which is the
            same as ``kaiming_init`` in pytorch. You can choose one from
            ['fan_in', 'fan_out']. Defaults to 'fan_in'.
    """

    def __init__(self, name='weight', gain=2 ** 0.5, mode='fan_in', lr_mul=1.0
        ):
        self.name = name
        self.mode = mode
        self.gain = gain
        self.lr_mul = lr_mul

    def compute_weight(self, module):
        """Compute weight with equalized learning rate.

        Args:
            module (nn.Module): A module that is wrapped with equalized lr.

        Returns:
            torch.Tensor: Updated weight.
        """
        weight = getattr(module, self.name + '_orig')
        if weight.ndim == 5:
            fan = _calculate_correct_fan(weight[0], self.mode)
        else:
            assert weight.ndim <= 4
            fan = _calculate_correct_fan(weight, self.mode)
        weight = weight * torch.tensor(self.gain, device=weight.device
            ) * torch.sqrt(torch.tensor(1.0 / fan, device=weight.device)
            ) * self.lr_mul
        return weight

    def __call__(self, module, inputs):
        """Standard interface for forward pre hooks."""
        setattr(module, self.name, self.compute_weight(module))

    @staticmethod
    def apply(module, name, gain=2 ** 0.5, mode='fan_in', lr_mul=1.0):
        """Apply function.

        This function is to register an equalized learning rate hook in an
        ``nn.Module``.

        Args:
            module (nn.Module): Module to be wrapped.
            name (str | optional): The name of weights. Defaults to 'weight'.
            mode (str, optional): The mode of computing ``fan`` which is the
                same as ``kaiming_init`` in pytorch. You can choose one from
                ['fan_in', 'fan_out']. Defaults to 'fan_in'.

        Returns:
            nn.Module: Module that is registered with equalized lr hook.
        """
        for _, hook in module._forward_pre_hooks.items():
            if isinstance(hook, EqualizedLR):
                raise RuntimeError(
                    f'Cannot register two equalized_lr hooks on the same parameter {name} in {module} module.'
                    )
        fn = EqualizedLR(name, gain=gain, mode=mode, lr_mul=lr_mul)
        weight = module._parameters[name]
        delattr(module, name)
        module.register_parameter(name + '_orig', weight)
        setattr(module, name, weight.data)
        module.register_forward_pre_hook(fn)
        return fn


class EqualizedLRLinearModule(nn.Linear):
    """Equalized LR LinearModule.

    In this module, we adopt equalized lr in ``nn.Linear``. The equalized
    learning rate is proposed in:
    Progressive Growing of GANs for Improved Quality, Stability, and Variation

    Note that, the initialization of ``self.weight`` will be overwrited as
    :math:`\\mathcal{N}(0, 1)`.

    Args:
        equalized_lr_cfg (dict | None, optional): Config for ``EqualizedLR``.
            If ``None``, equalized learning rate is ignored. Defaults to
            dict(mode='fan_in').
    """

    def __init__(self, *args, equalized_lr_cfg=dict(mode='fan_in'), **kwargs):
        super(EqualizedLRLinearModule, self).__init__(*args, **kwargs)
        self.with_equlized_lr = equalized_lr_cfg is not None
        if self.with_equlized_lr:
            self.lr_mul = equalized_lr_cfg.get('lr_mul', 1.0)
        else:
            self.lr_mul = 1.0
        if self.with_equlized_lr:
            equalized_lr(self, **equalized_lr_cfg)
            self._init_linear_weights()

    def _init_linear_weights(self):
        """Initialize linear weights as described in PGGAN."""
        nn.init.normal_(self.weight, 0, 1.0 / self.lr_mul)
        if self.bias is not None:
            nn.init.constant_(self.bias, 0.0)


class EqualLinearActModuleNew(nn.Module):
    """Equalized LR Linear Module with Activation Layer.

    Args:
        nn ([type]): [description]
    """

    def __init__(self, *args, equalized_lr_cfg=dict(gain=1.0, lr_mul=1.0),
        bias=True, bias_init=0.0, act_cfg=None, **kwargs):
        super(EqualLinearActModuleNew, self).__init__()
        self.with_activation = act_cfg is not None
        self.linear = EqualizedLRLinearModule(*args, bias=False,
            equalized_lr_cfg=equalized_lr_cfg, **kwargs)
        if equalized_lr_cfg is not None:
            self.lr_mul = equalized_lr_cfg.get('lr_mul', 1.0)
        else:
            self.lr_mul = 1.0
        if bias:
            self.bias = nn.Parameter(torch.zeros(self.linear.out_features).
                fill_(bias_init))
        else:
            self.bias = None
        if self.with_activation:
            act_cfg = deepcopy(act_cfg)
            if act_cfg['type'] == 'fused_bias':
                self.act_type = act_cfg.pop('type')
                assert self.bias is not None
                self.activate = partial(fused_bias_leakyrelu, **act_cfg)
            else:
                self.act_type = 'normal'
                self.activate = build_activation_layer(act_cfg)
        else:
            self.act_type = None

    def forward(self, input_0):
        primals_3 = self.bias
        primals_1 = self.linear.weight_orig
        primals_2 = input_0
        output = call([primals_1, primals_2, primals_3])
        return output[0]


Measured latency_ms: 0.015413