add rocm support for fft api (#36415)

Author: cxxly

paddle/fluid/operators/CMakeLists.txt

@@ -102,8 +102,7 @@ else()
     op_library(warpctc_op DEPS dynload_warpctc sequence_padding sequence_scale)
 endif()
 
-
-if (WITH_GPU AND (NOT WITH_ROCM))
+if (WITH_GPU OR WITH_ROCM)
     if (MKL_FOUND AND WITH_ONEMKL)
         op_library(spectral_op SRCS spectral_op.cc spectral_op.cu DEPS dynload_cuda dynload_mklrt ${OP_HEADER_DEPS})
         target_include_directories(spectral_op PRIVATE ${MKL_INCLUDE})

paddle/fluid/operators/spectral_helper.h

@@ -0,0 +1,261 @@
+// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include "paddle/fluid/operators/spectral_op.h"
+
+#ifdef PADDLE_WITH_HIP
+#include "paddle/fluid/platform/dynload/hipfft.h"
+#endif
+
+#ifdef PADDLE_WITH_CUDA
+#include "paddle/fluid/platform/dynload/cufft.h"
+#endif
+
+namespace paddle {
+namespace operators {
+using ScalarType = framework::proto::VarType::Type;
+const int64_t kMaxCUFFTNdim = 3;
+const int64_t kMaxDataNdim = kMaxCUFFTNdim + 1;
+// This struct is used to easily compute hashes of the
+// parameters. It will be the **key** to the plan cache.
+struct PlanKey {
+  // between 1 and kMaxCUFFTNdim, i.e., 1 <= signal_ndim <= 3
+  int64_t signal_ndim_;
+  // These include additional batch dimension as well.
+  int64_t sizes_[kMaxDataNdim];
+  int64_t input_shape_[kMaxDataNdim];
+  int64_t output_shape_[kMaxDataNdim];
+  FFTTransformType fft_type_;
+  ScalarType value_type_;
+
+  PlanKey() = default;
+
+  PlanKey(const std::vector<int64_t>& in_shape,
+          const std::vector<int64_t>& out_shape,
+          const std::vector<int64_t>& signal_size, FFTTransformType fft_type,
+          ScalarType value_type) {
+    // Padding bits must be zeroed for hashing
+    memset(this, 0, sizeof(*this));
+    signal_ndim_ = signal_size.size() - 1;
+    fft_type_ = fft_type;
+    value_type_ = value_type;
+
+    std::copy(signal_size.cbegin(), signal_size.cend(), sizes_);
+    std::copy(in_shape.cbegin(), in_shape.cend(), input_shape_);
+    std::copy(out_shape.cbegin(), out_shape.cend(), output_shape_);
+  }
+};
+
+#if defined(PADDLE_WITH_CUDA)
+// An RAII encapsulation of cuFFTHandle
+class CuFFTHandle {
+  ::cufftHandle handle_;
+
+ public:
+  CuFFTHandle() {
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::cufftCreate(&handle_));
+  }
+
+  ::cufftHandle& get() { return handle_; }
+  const ::cufftHandle& get() const { return handle_; }
+
+  ~CuFFTHandle() {
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::cufftDestroy(handle_));
+  }
+};
+
+using plan_size_type = long long int;  // NOLINT
+// This class contains all the information needed to execute a cuFFT plan:
+//   1. the plan
+//   2. the workspace size needed
+class CuFFTConfig {
+ public:
+  // Only move semantics is enought for this class. Although we already use
+  // unique_ptr for the plan, still remove copy constructor and assignment op so
+  // we don't accidentally copy and take perf hit.
+  explicit CuFFTConfig(const PlanKey& plan_key)
+      : CuFFTConfig(
+            std::vector<int64_t>(plan_key.sizes_,
+                                 plan_key.sizes_ + plan_key.signal_ndim_ + 1),
+            plan_key.signal_ndim_, plan_key.fft_type_, plan_key.value_type_) {}
+
+  // sizes are full signal, including batch size and always two-sided
+  CuFFTConfig(const std::vector<int64_t>& sizes, const int64_t signal_ndim,
+              FFTTransformType fft_type, ScalarType dtype)
+      : fft_type_(fft_type), value_type_(dtype) {
+    // signal sizes (excluding batch dim)
+    std::vector<plan_size_type> signal_sizes(sizes.begin() + 1, sizes.end());
+
+    // input batch size
+    const auto batch = static_cast<plan_size_type>(sizes[0]);
+    // const int64_t signal_ndim = sizes.size() - 1;
+    PADDLE_ENFORCE_EQ(signal_ndim, sizes.size() - 1,
+                      platform::errors::InvalidArgument(
+                          "The signal_ndim must be equal to sizes.size() - 1,"
+                          "But signal_ndim is: [%d], sizes.size() - 1 is: [%d]",
+                          signal_ndim, sizes.size() - 1));
+
+    cudaDataType itype, otype, exec_type;
+    const auto complex_input = has_complex_input(fft_type);
+    const auto complex_output = has_complex_output(fft_type);
+    if (dtype == framework::proto::VarType::FP32) {
+      itype = complex_input ? CUDA_C_32F : CUDA_R_32F;
+      otype = complex_output ? CUDA_C_32F : CUDA_R_32F;
+      exec_type = CUDA_C_32F;
+    } else if (dtype == framework::proto::VarType::FP64) {
+      itype = complex_input ? CUDA_C_64F : CUDA_R_64F;
+      otype = complex_output ? CUDA_C_64F : CUDA_R_64F;
+      exec_type = CUDA_C_64F;
+    } else if (dtype == framework::proto::VarType::FP16) {
+      itype = complex_input ? CUDA_C_16F : CUDA_R_16F;
+      otype = complex_output ? CUDA_C_16F : CUDA_R_16F;
+      exec_type = CUDA_C_16F;
+    } else {
+      PADDLE_THROW(platform::errors::InvalidArgument(
+          "cuFFT only support transforms of type float16, float32 and "
+          "float64"));
+    }
+
+    // disable auto allocation of workspace to use allocator from the framework
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::cufftSetAutoAllocation(
+        plan(), /* autoAllocate */ 0));
+
+    size_t ws_size_t;
+
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::cufftXtMakePlanMany(
+        plan(), signal_ndim, signal_sizes.data(),
+        /* inembed */ nullptr, /* base_istride */ 1, /* idist */ 1, itype,
+        /* onembed */ nullptr, /* base_ostride */ 1, /* odist */ 1, otype,
+        batch, &ws_size_t, exec_type));
+
+    ws_size = ws_size_t;
+  }
+
+  const cufftHandle& plan() const { return plan_ptr.get(); }
+
+  FFTTransformType transform_type() const { return fft_type_; }
+  ScalarType data_type() const { return value_type_; }
+  size_t workspace_size() const { return ws_size; }
+
+ private:
+  CuFFTHandle plan_ptr;
+  size_t ws_size;
+  FFTTransformType fft_type_;
+  ScalarType value_type_;
+};
+
+#elif defined(PADDLE_WITH_HIP)
+// An RAII encapsulation of cuFFTHandle
+class HIPFFTHandle {
+  ::hipfftHandle handle_;
+
+ public:
+  HIPFFTHandle() {
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::hipfftCreate(&handle_));
+  }
+
+  ::hipfftHandle& get() { return handle_; }
+  const ::hipfftHandle& get() const { return handle_; }
+
+  ~HIPFFTHandle() {
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::hipfftDestroy(handle_));
+  }
+};
+using plan_size_type = int;
+// This class contains all the information needed to execute a cuFFT plan:
+//   1. the plan
+//   2. the workspace size needed
+class HIPFFTConfig {
+ public:
+  // Only move semantics is enought for this class. Although we already use
+  // unique_ptr for the plan, still remove copy constructor and assignment op so
+  // we don't accidentally copy and take perf hit.
+  explicit HIPFFTConfig(const PlanKey& plan_key)
+      : HIPFFTConfig(
+            std::vector<int64_t>(plan_key.sizes_,
+                                 plan_key.sizes_ + plan_key.signal_ndim_ + 1),
+            plan_key.signal_ndim_, plan_key.fft_type_, plan_key.value_type_) {}
+
+  // sizes are full signal, including batch size and always two-sided
+  HIPFFTConfig(const std::vector<int64_t>& sizes, const int64_t signal_ndim,
+               FFTTransformType fft_type, ScalarType dtype)
+      : fft_type_(fft_type), value_type_(dtype) {
+    // signal sizes (excluding batch dim)
+    std::vector<plan_size_type> signal_sizes(sizes.begin() + 1, sizes.end());
+
+    // input batch size
+    const auto batch = static_cast<plan_size_type>(sizes[0]);
+    // const int64_t signal_ndim = sizes.size() - 1;
+    PADDLE_ENFORCE_EQ(signal_ndim, sizes.size() - 1,
+                      platform::errors::InvalidArgument(
+                          "The signal_ndim must be equal to sizes.size() - 1,"
+                          "But signal_ndim is: [%d], sizes.size() - 1 is: [%d]",
+                          signal_ndim, sizes.size() - 1));
+
+    hipfftType exec_type = [&] {
+      if (dtype == framework::proto::VarType::FP32) {
+        switch (fft_type) {
+          case FFTTransformType::C2C:
+            return HIPFFT_C2C;
+          case FFTTransformType::R2C:
+            return HIPFFT_R2C;
+          case FFTTransformType::C2R:
+            return HIPFFT_C2R;
+        }
+      } else if (dtype == framework::proto::VarType::FP64) {
+        switch (fft_type) {
+          case FFTTransformType::C2C:
+            return HIPFFT_Z2Z;
+          case FFTTransformType::R2C:
+            return HIPFFT_D2Z;
+          case FFTTransformType::C2R:
+            return HIPFFT_Z2D;
+        }
+      }
+      PADDLE_THROW(platform::errors::InvalidArgument(
+          "hipFFT only support transforms of type float32 and float64"));
+    }();
+
+    // disable auto allocation of workspace to use allocator from the framework
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::hipfftSetAutoAllocation(
+        plan(), /* autoAllocate */ 0));
+
+    size_t ws_size_t;
+
+    PADDLE_ENFORCE_CUDA_SUCCESS(platform::dynload::hipfftMakePlanMany(
+        plan(), signal_ndim, signal_sizes.data(),
+        /* inembed */ nullptr, /* base_istride */ 1, /* idist */ 1,
+        /* onembed */ nullptr, /* base_ostride */ 1, /* odist */ 1, exec_type,
+        batch, &ws_size_t));
+
+    ws_size = ws_size_t;
+  }
+
+  const hipfftHandle& plan() const { return plan_ptr.get(); }
+
+  FFTTransformType transform_type() const { return fft_type_; }
+  ScalarType data_type() const { return value_type_; }
+  size_t workspace_size() const { return ws_size; }
+
+ private:
+  HIPFFTHandle plan_ptr;
+  size_t ws_size;
+  FFTTransformType fft_type_;
+  ScalarType value_type_;
+};
+#endif
+}  // namespace operators
+}  // namespace paddle