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copybara-service merged 1 commit into from
Mar 25, 2026
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Internal changes #883

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41 changes: 21 additions & 20 deletions gemma/tiled_attention.h
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Original file line number Diff line number Diff line change
Expand Up @@ -15,26 +15,27 @@
namespace gcpp {

// Passed to HWY_VISIT_TARGETS; declares for one target.
#define GEMMA_DECL_TILED_ATTENTION(TARGET, NAMESPACE) \
namespace NAMESPACE { \
void TiledAttention(AttentionImpl attention_impl, size_t num_tokens, \
size_t layer_idx, const LayerWeightsPtrs& layer, \
AttentionActivationsPtrs& activations, QBatch& qbatch, \
MatMulEnv& env, int flags); \
void TransposeStridedQueries(hwy::Span<float*> queries, int qkv_dim, \
hwy::Span<float> transposed_queries); \
void LocalAttentionForAllHeadsTokensAndBatch( \
AttentionImpl attention_impl, const size_t num_tokens, \
const size_t layer_idx, const LayerWeightsPtrs& layer, \
AttentionActivationsPtrs& activations, QBatch& qbatch, \
ThreadingContext& ctx); \
\
template <typename OutT> \
std::tuple<std::vector<OutT, hwy::AlignedAllocator<OutT>>, \
std::vector<OutT*>, AlignedFloatVector> \
TransposeQueriesToGroupsOfNBF16orInt16(hwy::Span<float*> queries_ptrs, \
int qkv_dim, size_t group_size); \
/* NOLINTNEXTLINE(google-readability-namespace-comments) */ \
#define GEMMA_DECL_TILED_ATTENTION(TARGET, NAMESPACE) \
namespace NAMESPACE { \
void TiledAttention(AttentionImpl attention_impl, size_t num_tokens, \
size_t layer_idx, const LayerWeightsPtrs& layer, \
AttentionActivationsPtrs& activations, QBatch& qbatch, \
MatMulEnv& env, int flags); \
void TransposeStridedQueries(hwy::Span<float*> queries, int qkv_dim, \
hwy::Span<float> transposed_queries); \
void LocalAttentionForAllHeadsTokensAndBatch( \
AttentionImpl attention_impl, const size_t num_tokens, \
const size_t layer_idx, const LayerWeightsPtrs& layer, \
AttentionActivationsPtrs& activations, QBatch& qbatch, \
ThreadingContext& ctx); \
\
template <typename OutT> \
std::tuple<std::vector<OutT, hwy::AlignedAllocator<OutT>>, \
std::vector<OutT*>, AlignedFloatVector> \
TransposeQueriesToGroupsOfNBF16orInt16(hwy::Span<float*> queries_ptrs, \
int qkv_dim, size_t group_size); \
\
/* NOLINTNEXTLINE(google-readability-namespace-comments) */ \
} // namespace NAMESPACE

// Function declarations for each SIMD target. Allows direct call from the
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