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diff --git a/src/dynamic_fusion/sketch/gpu/operators/GpuSoftmax.cpp b/src/dynamic_fusion/sketch/gpu/operators/GpuSoftmax.cpp
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+/*
+ * Copyright (c) 2023-2024 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/dynamic_fusion/sketch/gpu/operators/GpuSoftmax.h"
+
+#include "arm_compute/core/Error.h"
+
+#include "src/common/utils/Log.h"
+#include "src/core/helpers/AutoConfiguration.h"
+#include "src/dynamic_fusion/sketch/ArgumentPack.h"
+#include "src/dynamic_fusion/sketch/gpu/GpuOperatorProperties.h"
+#include "src/dynamic_fusion/sketch/gpu/GpuWorkloadSketchImpl.h"
+
+namespace arm_compute
+{
+namespace experimental
+{
+namespace dynamic_fusion
+{
+namespace
+{
+GpuOperatorType operator_type = GpuOperatorType::Unfusable;
+} // namespace
+
+Status GpuSoftmax::is_supported_op(const GpuWorkloadContext &context,
+ const ITensorInfo *src,
+ const ITensorInfo *dst,
+ const Attributes &attributes)
+{
+ ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(src, dst);
+ TensorInfo dst_info_to_validate;
+
+ // Auto initialize dst tensor info
+ if (dst != nullptr)
+ {
+ dst_info_to_validate = *dst;
+ }
+ else
+ {
+ auto_init_if_empty(dst_info_to_validate, *src->clone());
+ }
+ // Check components
+ if (context.gpu_language() == GpuLanguage::OpenCL)
+ {
+ const auto cl_compile_ctx = context.cl_compile_context();
+ ARM_COMPUTE_RETURN_ERROR_ON(cl_compile_ctx == nullptr);
+ const KernelProperties properties =
+ IGpuKernelComponent::Properties().stage(UnitWorkloadStage{UnitWorkloadStage::Stage::Run});
+
+ TensorShape logits_sum_shape = src->tensor_shape();
+ TensorInfo logits(src->clone()->set_tensor_shape(logits_sum_shape));
+
+ // The sum tensor dim0 only need one element
+ logits_sum_shape.set(0, 1);
+ TensorInfo sum(src->clone()->set_tensor_shape(logits_sum_shape));
+
+ // Validate Component
+ ArgumentPack<ITensorInfo> arguments_exp_sum;
+ ArgumentPack<ITensorInfo> arguments_norm;
+
+ arguments_exp_sum.add_const_tensor(ACL_SRC_0, src);
+ arguments_exp_sum.add_const_tensor(ACL_DST_0, &sum);
+ arguments_exp_sum.add_const_tensor(ACL_DST_1, &logits);
+
+ arguments_norm.add_const_tensor(ACL_SRC_0, &logits);
+ arguments_norm.add_const_tensor(ACL_SRC_1, &sum);
+ arguments_norm.add_const_tensor(ACL_DST_0, &dst_info_to_validate);
+
+ ARM_COMPUTE_UNUSED(properties, attributes);
+ return Status(ErrorCode::RUNTIME_ERROR, "GpuSoftmax is not implemented");
+ }
+ else
+ {
+ ARM_COMPUTE_RETURN_ERROR_MSG("Unimplemented Gpu language");
+ }
+
+ return Status{ErrorCode::RUNTIME_ERROR, "GpuSoftmax is not Supported"};
+}
+
+Status GpuSoftmax::validate_op(const GpuWorkloadSketch &sketch,
+ const ITensorInfo *src,
+ const ITensorInfo *dst,
+ const Attributes &attributes)
+{
+ ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(src, dst);
+ ARM_COMPUTE_RETURN_ERROR_ON(!src->has_valid_id() || !dst->has_valid_id());
+ ARM_COMPUTE_RETURN_ERROR_ON_MSG(src->num_dimensions() > 4, "Only up to 4 dimensions are supported");
+ ARM_COMPUTE_RETURN_ERROR_ON(attributes.axis() < static_cast<int32_t>(-src->num_dimensions()) ||
+ static_cast<int32_t>(src->num_dimensions()) <= attributes.axis());
+
+ // Auto initialize dst tensor info
+ TensorInfo dst_info_to_validate = *dst;
+ auto_init_if_empty(dst_info_to_validate, *src->clone());
+
+ const size_t actual_axis =
+ static_cast<size_t>(wrap_around(attributes.axis(), static_cast<int32_t>(src->num_dimensions())));
+ const bool needs_permute = actual_axis != 0;
+ ARM_COMPUTE_RETURN_ERROR_ON_MSG(needs_permute, "Dynamic fusion softmax on axis!=0 not supported yet.");
+
+ // Perform fusion test and check if the operator meets the fusion constraints
+ ArgumentPack<ITensorInfo> tensors;
+ tensors.add_const_tensor(ACL_SRC_0, src);
+ tensors.add_const_tensor(ACL_DST_0, &dst_info_to_validate);
+
+ const auto op = sketch.implementation().operator_group().new_operator(operator_type, tensors);
+ ARM_COMPUTE_RETURN_ERROR_ON_MSG(!sketch.implementation().operator_group().try_add_operator(op),
+ "Operator fusion test failed. This operator cannot be fused into the workload");
+
+ // Check if configuration is supported
+ return is_supported_op(*sketch.gpu_context(), src, &dst_info_to_validate, attributes);
+}
+
+void GpuSoftmax::create_op(GpuWorkloadSketch &sketch, ITensorInfo *src, ITensorInfo *dst, const Attributes &attributes)
+{
+ ARM_COMPUTE_ERROR_ON_NULLPTR(src, dst);
+ ARM_COMPUTE_LOG_PARAMS(src, dst, attributes);
+ TensorShape logits_sum_shape = src->tensor_shape();
+ ITensorInfo *logits = sketch.implementation().create_auxiliary_tensor(
+ src->clone()->set_id(ITensorInfo::invalid_tensor_id).set_tensor_shape(logits_sum_shape));
+ logits_sum_shape.set(0, 1);
+ ITensorInfo *sum = sketch.implementation().create_auxiliary_tensor(
+ src->clone()->set_id(ITensorInfo::invalid_tensor_id).set_tensor_shape(logits_sum_shape));
+
+ // Auto initialize dst tensor info and the auxiliary tensor infos as well
+ auto_init_if_empty(*dst, *src->clone());
+
+ // Assert validation
+ ARM_COMPUTE_ERROR_THROW_ON(GpuSoftmax::validate_op(sketch, src, dst, attributes));
+ ARM_COMPUTE_ERROR_ON_NULLPTR(logits, sum);
+
+ // Translate into components and add to component graph
+ auto &comp_graph = sketch.implementation().component_graph();
+ const auto sketch_ctx = sketch.implementation().context();
+
+ if (sketch_ctx->gpu_language() == GpuLanguage::OpenCL)
+ {
+ const auto cl_compile_ctx = sketch_ctx->cl_compile_context();
+ ARM_COMPUTE_UNUSED(cl_compile_ctx);
+ ARM_COMPUTE_ERROR_ON(cl_compile_ctx == nullptr);
+
+ // Add Direct Conv2d Component
+ {
+ auto properties = IGpuKernelComponent::Properties();
+ properties.stage(UnitWorkloadStage{UnitWorkloadStage::Stage::Run});
+
+ ArgumentPack<ITensorInfo> arguments_exp_sum;
+ ArgumentPack<ITensorInfo> arguments_norm;
+
+ arguments_exp_sum.add_const_tensor(ACL_SRC_0, src);
+ arguments_exp_sum.add_const_tensor(ACL_DST_0, sum);
+ arguments_exp_sum.add_const_tensor(ACL_DST_1, logits);
+
+ arguments_norm.add_const_tensor(ACL_SRC_0, logits);
+ arguments_norm.add_const_tensor(ACL_SRC_1, sum);
+ arguments_norm.add_const_tensor(ACL_DST_0, dst);
+
+ // Add to component graph -- NOT IMPLEMENTED
+ ARM_COMPUTE_UNUSED(comp_graph, attributes);
+ }
+ }
+ else
+ {
+ ARM_COMPUTE_ERROR("Unimplemented Gpu language");
+ }
+
+ // Set up fusion test by adding to the Operator Group
+ // Note this has to be performed after all the components have been successfully added to the component graph
+
+ // Pack tensor infos
+ ArgumentPack<ITensorInfo> tensors;
+ tensors.add_const_tensor(ACL_SRC_0, src);
+ tensors.add_const_tensor(ACL_DST_0, dst);
+
+ const auto op = sketch.implementation().operator_group().new_operator(operator_type, tensors);
+ sketch.implementation().operator_group().add_operator(op);
+}
+
+} // namespace dynamic_fusion
+} // namespace experimental
+} // namespace arm_compute