mirror of https://github.com/google/gemma.cpp.git
87 lines
3.0 KiB
C++
87 lines
3.0 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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#include "backprop/forward.h"
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#include "backprop/activations.h"
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#include "backprop/prompt.h"
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#include "gemma/common.h"
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#include "hwy/contrib/thread_pool/thread_pool.h"
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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 "backprop/forward.cc" // NOLINT
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#include "hwy/foreach_target.h" // IWYU pragma: keep
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#include "hwy/highway.h"
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// After highway.h
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#include "backprop/forward-inl.h"
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#include "gemma/weights.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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template <typename TConfig>
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float CrossEntropyLossForwardPass(const Prompt& prompt,
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const ByteStorageT& weights_u8,
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ByteStorageT& forward_u8,
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hwy::ThreadPool& pool) {
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const auto& weights =
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*reinterpret_cast<CompressedWeights<TConfig>*>(weights_u8.get());
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auto& forward =
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*reinterpret_cast<ForwardPass<float, TConfig>*>(forward_u8.get());
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return
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CrossEntropyLossForwardPass<TConfig, CompressedWeights, CompressedLayer>(
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prompt.tokens, prompt.context_size, weights, forward, pool);
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}
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float CrossEntropyLossForwardPassT(Model model, const Prompt& prompt,
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const ByteStorageT& weights,
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ByteStorageT& forward,
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hwy::ThreadPool& pool) {
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// TODO(janwas): use CallFunctorForModel
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switch (model) {
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case Model::GEMMA_2B:
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return CrossEntropyLossForwardPass<ConfigGemma2B<float>>(prompt, weights,
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forward, pool);
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case Model::GEMMA_TINY:
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return CrossEntropyLossForwardPass<ConfigGemmaTiny<float>>(
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prompt, weights, forward, pool);
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default:
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HWY_ABORT("Model type %d unknown.", static_cast<int>(model));
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}
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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(CrossEntropyLossForwardPassT);
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float CrossEntropyLossForwardPass(
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const Model& model, const Prompt& prompt, const ByteStorageT& weights,
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ByteStorageT& forward, hwy::ThreadPool& pool) {
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return HWY_DYNAMIC_DISPATCH(CrossEntropyLossForwardPassT)(
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model, prompt, weights, forward, pool);
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}
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} // namespace gcpp
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#endif // HWY_ONCE
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