Still fail on stabel diffusion 1.5. Revert back to decomposed ops instead of using INormalization Layer

Author: cehongwang

py/torch_tensorrt/dynamo/conversion/impl/normalization/ops.py

@@ -227,6 +227,143 @@ def layer_norm(
 #         return reshaped_output, None, None
 #     return reshaped_output
 
+# def native_group_norm(
+#     ctx: ConversionContext,
+#     target: Target,
+#     source_ir: Optional[SourceIR],
+#     name: str,
+#     input: TRTTensor,
+#     weight: Optional[Union[torch.Tensor, np.ndarray]],
+#     bias: Optional[Union[torch.Tensor, np.ndarray]],
+#     N: int,
+#     C: int,
+#     HxW: int,
+#     group: int,
+#     eps: float,
+#     return_mean_rstd: bool = True,
+# ) -> Union[TRTTensor, Sequence[TRTTensor]]:
+#     assert (
+#         len(input.shape) >= 3
+#     ), f"The input dimension should not be less than 3, got {len(input.shape)}!"
+
+#     B = input.shape[0]
+#     # if C is provided, it must be as same as the channel from the input shape,
+#     # else if C is zero, we should get the channel from the input shape
+#     if C == 0:
+#         C = input.shape[1]
+#     assert (
+#         C == input.shape[1]
+#     ), f"The number of Channel={C} must be equal to the number of channels in the input shape={input.shape[1]}"
+#     # Groups are a subdivision of the channel dimension.
+#     assert (
+#         C % group == 0
+#     ), f"The num of channels ({C}) should be divisible by num_groups ({group})!"
+#     input = get_trt_tensor(ctx, input, f"{name}_input")
+
+#     shape = list(input.shape)
+
+#     for i, s in enumerate(shape):
+#         if i == 0 and s > 0:
+#             shape[i] = B * group
+#         elif i == 1:
+#             shape[i] = C // group
+#         elif i > 1 and s == -1:
+#             shape[i] = 0
+
+#     # Normalize every group.
+#     reshaped_input = impl.shuffle.reshape(
+#         ctx,
+#         target,
+#         source_ir,
+#         f"{name}_reshape_input",
+#         input,
+#         shape,
+#     )
+
+#     weight = get_trt_tensor(ctx, weight, f"{name}_weight")
+#     bias = get_trt_tensor(ctx, bias, f"{name}_bias")
+#     weight_bias_shape = (1, C) + (1,) * (len(input.shape) - 2)
+
+#     dims = list(range(1, len(input.shape)))
+#     axes = get_axes_for_reduce_op(dims)
+#     dummy_weight = get_trt_tensor(ctx, np.array([1.0]), f"{name}_dummy_weight")
+#     dummy_weight = impl.slice.expand(
+#             ctx, target, source_ir, f"{name}_expand_dummy_weight", dummy_weight, reshaped_input.shape
+#         )
+#     dummy_bias = get_trt_tensor(ctx, np.array([0.0]), f"{name}_dummy_bias")
+#     dummy_bias = impl.slice.expand(
+#             ctx, target, source_ir, f"{name}_expand_dummy_bias", dummy_bias, reshaped_input.shape
+#         )
+#     group_norm = ctx.net.add_normalization(reshaped_input, dummy_weight, dummy_bias, axes)
+#     group_norm.epsilon = eps
+#     group_norm.compute_precision = input.dtype
+#     set_layer_name(group_norm, target, f"{name}_group_norm", source_ir)
+#     output = group_norm.get_output(0)
+
+#     shape = list(output.shape)
+#     for i, s in enumerate(shape):
+#         if i == 0 and s > 0:
+#             shape[i] = B
+#         elif i == 1:
+#             shape[i] = C
+#         elif i > 1 and s == -1:
+#             shape[i] = 0
+
+#     reshaped_output = impl.shuffle.reshape(
+#         ctx, target, source_ir, f"{name}_reshape_output", output, shape
+#     )
+
+
+#     # weight = impl.unsqueeze.unsqueeze(ctx, target, source_ir, f"{name}_weight_unsqueeze1", weight, (0))
+#     # weight = impl.unsqueeze.unsqueeze(ctx, target, source_ir, f"{name}_weight_unsqueeze2", weight, (2))
+#     # weight = impl.slice.expand(
+#     #     ctx, target, source_ir, f"{name}_expand_weight", weight, shape
+#     # )
+#     # bias = impl.unsqueeze.unsqueeze(ctx, target, source_ir, f"{name}_bias_unsqueeze1", bias, (0))
+#     # bias = impl.unsqueeze.unsqueeze(ctx, target, source_ir, f"{name}_bias_unsqueeze2", bias, (2))
+#     # bias = impl.slice.expand(
+#     #     ctx, target, source_ir, f"{name}_expand_bias", bias, shape
+#     # )
+
+#     reshaped_gamma = impl.shuffle.reshape(
+#         ctx,
+#         target,
+#         source_ir,
+#         f"{name}_reshape_gamma",
+#         weight,
+#         weight_bias_shape,
+#     )
+
+#     reshaped_output = impl.elementwise.mul(
+#         ctx,
+#         target,
+#         source_ir,
+#         f"{name}_mul_gamma",
+#         reshaped_output,
+#         reshaped_gamma,
+#     )
+
+#     reshaped_bias = impl.shuffle.reshape(
+#         ctx,
+#         target,
+#         source_ir,
+#         f"{name}_reshape_beta",
+#         bias,
+#         weight_bias_shape,
+#     )
+#     reshaped_output = impl.elementwise.add(
+#         ctx,
+#         target,
+#         source_ir,
+#         f"{name}_add_beta",
+#         reshaped_output,
+#         reshaped_bias,
+#     )
+#     if return_mean_rstd:
+#         # return fake mean and rstd for now
+#         return reshaped_output, None, None
+#     return reshaped_output
+
 
 def native_group_norm(
     ctx: ConversionContext,
@@ -286,36 +423,94 @@ def native_group_norm(
     weight_bias_shape = (1, C) + (1,) * (len(input.shape) - 2)
 
     dims = list(range(1, len(input.shape)))
-    axes = get_axes_for_reduce_op(dims)
-    # Use dummy weight since the normalization layer cannot well handle the scale and shift of group norm due to shape mismatch
-    # TODO: check with TRT the correct way to use 'num_groups' to implement group norm
-    dummy_weight = get_trt_tensor(
-        ctx, np.array([1.0]), f"{name}_dummy_weight", input.dtype
+
+    # E[X]
+    mean_trt = impl.reduce.mean(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_mean",
+        reshaped_input,
+        dims,
+        True,
     )
-    dummy_weight = impl.slice.expand(
+
+    mean_trt = impl.slice.expand(
         ctx,
         target,
         source_ir,
-        f"{name}_expand_dummy_weight",
-        dummy_weight,
+        f"{name}_expand_mean_trt",
+        mean_trt,
         reshaped_input.shape,
     )
-    dummy_bias = get_trt_tensor(ctx, np.array([0.0]), f"{name}_dummy_bias", input.dtype)
-    dummy_bias = impl.slice.expand(
+
+    # X - E[X]
+    sub_trt = impl.elementwise.sub(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_sub",
+        reshaped_input,
+        mean_trt,
+    )
+
+    # variance
+    pow_trt = get_trt_tensor(ctx, 2, f"{name}_power", np.float32)
+    pow_var = impl.elementwise.pow(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_pow",
+        sub_trt,
+        pow_trt,
+    )
+
+    var_trt = impl.reduce.mean(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_mean_var",
+        pow_var,
+        dims,
+        True,
+    )
+
+    var_trt = impl.slice.expand(
         ctx,
         target,
         source_ir,
-        f"{name}_expand_dummy_bias",
-        dummy_bias,
+        f"{name}_expand_var_trt",
+        var_trt,
         reshaped_input.shape,
     )
-    group_norm = ctx.net.add_normalization(
-        reshaped_input, dummy_weight, dummy_bias, axes
+
+    eps_trt = get_trt_tensor(ctx, eps, f"{name}_eps", np.float32)
+    add_trt = impl.elementwise.add(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_add",
+        var_trt,
+        eps_trt,
+    )
+
+    sqrt_trt = impl.unary.sqrt(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_sqrt",
+        add_trt,
+    )
+
+    # y = (X - E[X]) / sqrt((var + eps))
+    output = impl.elementwise.div(
+        ctx,
+        target,
+        source_ir,
+        f"{name}_div",
+        sub_trt,
+        sqrt_trt,
     )
-    group_norm.epsilon = eps
-    group_norm.compute_precision = input.dtype
-    set_layer_name(group_norm, target, f"{name}_group_norm", source_ir)
-    output = group_norm.get_output(0)
 
     shape = list(output.shape)
     for i, s in enumerate(shape):
@@ -329,12 +524,11 @@ def native_group_norm(
     reshaped_output = impl.shuffle.reshape(
         ctx, target, source_ir, f"{name}_reshape_output", output, shape
     )
-
-    weight = impl.shuffle.reshape(
+    reshaped_gamma = impl.shuffle.reshape(
         ctx,
         target,
         source_ir,
-        f"{name}_weight",
+        f"{name}_reshape_gamma",
         weight,
         weight_bias_shape,
     )
@@ -343,26 +537,26 @@ def native_group_norm(
         ctx,
         target,
         source_ir,
-        f"{name}_mul_weight",
+        f"{name}_mul_gamma",
         reshaped_output,
-        weight,
+        reshaped_gamma,
     )
 
-    bias = impl.shuffle.reshape(
+    reshaped_bias = impl.shuffle.reshape(
         ctx,
         target,
         source_ir,
-        f"{name}_reshape_bias",
+        f"{name}_reshape_beta",
         bias,
         weight_bias_shape,
     )
     reshaped_output = impl.elementwise.add(
         ctx,
         target,
         source_ir,
-        f"{name}_add_bias",
+        f"{name}_add_beta",
         reshaped_output,
-        bias,
+        reshaped_bias,
     )
     if return_mean_rstd:
         # return fake mean and rstd for now