chore: import upstream snapshot with attribution

2026-07-13 12:40:42 +08:00
commit e25996e7db
15472 changed files with 3536181 additions and 0 deletions
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+// Copyright (c) 2024 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.
+
+#include <algorithm>
+#include <utility>
+#include <vector>
+
+#include "paddle/phi/core/dense_tensor.h"
+#include "paddle/phi/core/kernel_registry.h"
+
+#if defined(PADDLE_WITH_GLOO)
+#include "paddle/phi/core/distributed/gloo_comm_context.h"
+#endif
+
+namespace phi {
+
+template <typename T, typename Context>
+void CScatterOpCPUKernel(const Context &dev_ctx,
+                         const DenseTensor &x,
+                         int ring_id,
+                         int root,
+                         int nranks,
+                         bool use_calc_stream,
+                         DenseTensor *out) {
+#if defined(PADDLE_WITH_GLOO)
+  auto in = &x;
+  auto root_id = root;
+
+  auto comm_ctx =
+      static_cast<distributed::GlooCommContext *>(dev_ctx.GetCommContext());
+  PADDLE_ENFORCE_NE(comm_ctx,
+                    nullptr,
+                    ::common::errors::Unavailable(
+                        "NCCLCommContext is nullptr, collective op should "
+                        "has ring_id attr."));
+  comm_ctx->Scatter(out, *in, root_id);
+#else
+  PADDLE_THROW(common::errors::Unavailable(
+      "PaddlePaddle should compile with GLOO by setting WITH_GLOO=ON"));
+#endif
+}
+}  // namespace phi
+
+PD_REGISTER_KERNEL(c_scatter,
+                   CPU,
+                   ALL_LAYOUT,
+                   phi::CScatterOpCPUKernel,
+                   float,
+                   double,
+                   int,
+                   int64_t,
+                   phi::float16) {}