mirror of https://github.com/google/gemma.cpp.git
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
// Copyright 2024 Google LLC
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// SPDX-License-Identifier: Apache-2.0
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Compiles this file for multiple architectures via "foreach_target.h", to
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// which we pass the filename via macro 'argument'.
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#undef HWY_TARGET_INCLUDE
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#define HWY_TARGET_INCLUDE "gemma/common_scalar.cc" // NOLINT
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#include "hwy/foreach_target.h" // IWYU pragma: keep
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#include "gemma/ops.h"
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#include "hwy/highway.h"
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HWY_BEFORE_NAMESPACE();
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namespace gcpp {
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namespace HWY_NAMESPACE {
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namespace hn = hwy::HWY_NAMESPACE;
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float EmbeddingScaling(int model_dim) {
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// Round to bf16 to match Gemma's Embedder, which casts before mul.
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return hwy::ConvertScalarTo<float>(hwy::ConvertScalarTo<hwy::bfloat16_t>(
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Sqrt(static_cast<float>(model_dim))));
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}
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} // namespace HWY_NAMESPACE
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} // namespace gcpp
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HWY_AFTER_NAMESPACE();
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#if HWY_ONCE
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namespace gcpp {
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HWY_EXPORT(EmbeddingScaling);
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float EmbeddingScaling(int model_dim) {
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return HWY_DYNAMIC_DISPATCH(EmbeddingScaling)(model_dim);
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}
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} // namespace gcpp
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#endif // HWY_ONCE
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