[Misc] Remove custom op rotary_embedding

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

Author: wangxiyuan

csrc/kernels/pos_encoding_kernels.cpp

@@ -24,13 +24,6 @@
 #include "torch_npu/csrc/aten/common/from_blob.h"
 
 namespace vllm_ascend {
-  extern void rotary_embedding_impl(AscendType type, bool isNeox, void *stream, int64_t *positions, void *queryDst,
-    void *keyDst, void *query, void *key, void *cosSinCache, const int rotDim,
-    const int64_t queryStride, const int64_t keyStride, const int64_t dstQueryStride,
-    const int64_t dstKeyStride, const int numHeads, const int numKvHeads,
-    const int headSize, const int64_t numTokens, const uint32_t loopCnt,
-    uint32_t aivNum);
-
   extern void get_masked_input_and_mask_impl(
     void* stream,
     void* input,

csrc/ops.h

@@ -105,75 +105,6 @@ AscendType get_dtype_from_torch(at::ScalarType scalarType)
     }
 }
 
-std::tuple<at::Tensor, at::Tensor> rotary_embedding(at::Tensor &positions, at::Tensor &query, at::Tensor &key,
-    int64_t head_size, at::Tensor &cos_sin_cache,  bool is_neox)
-{
-    int32_t deviceId = 0;
-    int64_t num_tokens = positions.numel();
-    int positions_ndim = positions.dim();
-    TORCH_CHECK(
-        positions_ndim == 1 || positions_ndim == 2,
-        "positions must have shape [num_tokens] or [batch_size, seq_len]");
-    if (positions_ndim == 1) {
-      TORCH_CHECK(
-          query.size(0) == positions.size(0) && key.size(0) == positions.size(0),
-          "query, key and positions must have the same number of tokens");
-    }
-    if (positions_ndim == 2) {
-      TORCH_CHECK(
-          query.size(0) == positions.size(0) &&
-              key.size(0) == positions.size(0) &&
-              query.size(1) == positions.size(1) &&
-              key.size(1) == positions.size(1),
-          "query, key and positions must have the same batch_size and seq_len");
-    }
-    TORCH_CHECK(head_size % 32 == 0, "rotary_embedding: headSize should be divisible by 32");
-    int query_hidden_size = query.numel() / num_tokens;
-    int key_hidden_size = key.numel() / num_tokens;
-    TORCH_CHECK(query_hidden_size % head_size == 0);
-    TORCH_CHECK(key_hidden_size % head_size == 0);
-    TORCH_CHECK(is_neox == true, "rotary_embedding: neox=false is not supported as custom kernel in vllm-ascend");
-
-    // Make sure query and key have consistent number of heads
-    int num_heads = query_hidden_size / head_size;
-    int num_kv_heads = key_hidden_size / head_size;
-    TORCH_CHECK(num_heads % num_kv_heads == 0);
-    at::Tensor query_dst = at::empty({num_tokens, num_heads, head_size}, query.options());
-    at::Tensor key_dst = at::empty({num_tokens, num_kv_heads, head_size}, key.options());
-
-    int rot_dim = cos_sin_cache.size(1);
-    int seq_dim_idx = positions_ndim - 1;
-    int64_t *position_ids_ptr = positions.data_ptr<int64_t>();
-    void *query_dst_ptr = query_dst.data_ptr();
-    void *key_dst_ptr = key_dst.data_ptr();
-    void *query_ptr = query.data_ptr();
-    void *key_ptr = key.data_ptr();
-    void *cos_sin_cache_ptr = cos_sin_cache.data_ptr();
-    int64_t query_stride = query.stride(seq_dim_idx);
-    int64_t key_stride = key.stride(seq_dim_idx);
-    int64_t dst_query_stride = query_dst.stride(0);
-    int64_t dst_key_stride = key_dst.stride(0);
-    at::ScalarType scalar_type = query.scalar_type();
-    aclrtStream stream = c10_npu::getCurrentNPUStream().stream();
-    at_npu::native::OpCommand cmd;
-    cmd.Name("rotary_embedding");
-    cmd.SetCustomHandler([scalar_type, is_neox, num_tokens, stream, position_ids_ptr, query_dst_ptr, key_dst_ptr,
-                          query_ptr, key_ptr, cos_sin_cache_ptr, rot_dim, query_stride, key_stride,
-                          dst_query_stride, dst_key_stride, num_heads, num_kv_heads, head_size]() -> int {
-        auto dtype_num = get_dtype_from_torch(scalar_type);
-        int device_id = 0;
-        int64_t aiv_num = 0;
-        TORCH_CHECK(aclGetDeviceCapability(device_id, ACL_DEVICE_INFO_VECTOR_CORE_NUM, &aiv_num) == ACL_SUCCESS);
-        uint32_t loop_cnt = (num_tokens + aiv_num - 1) / aiv_num;
-        rotary_embedding_impl(dtype_num, is_neox, stream, position_ids_ptr, query_dst_ptr, key_dst_ptr, query_ptr,
-                                key_ptr, cos_sin_cache_ptr, rot_dim, query_stride, key_stride, dst_query_stride,
-                                dst_key_stride, num_heads, num_kv_heads, head_size, num_tokens, loop_cnt, aiv_num);
-        return 0;
-    });
-    cmd.Run();
-    return {query_dst, key_dst};
-}
-
 std::tuple<at::Tensor &, at::Tensor &, at::Tensor &, at::Tensor &, at::Tensor &> mla_preprocess(
     const at::Tensor &hiddenState, const at::Tensor &wdqkv,
     const c10::optional<at::Tensor> &descale0, const at::Tensor &gamma1, const c10::optional<at::Tensor> &beta1, const at::Tensor &wuq,
@@ -1368,14 +1299,6 @@ TORCH_LIBRARY_EXPAND(CONCAT(_C, _ascend), ops)
     ops.def("weak_ref_tensor(Tensor input) -> Tensor");
     ops.impl("weak_ref_tensor", torch::kPrivateUse1, &vllm_ascend::weak_ref_tensor);
 
-    // Rotary embedding
-    // Apply GPT-NeoX style rotary embedding to query and key.
-    ops.def(
-        "rotary_embedding(Tensor positions, Tensor! query,"
-        "                 Tensor! key, int head_size,"
-        "                 Tensor cos_sin_cache, bool is_neox) -> (Tensor query, Tensor key)");
-    ops.impl("rotary_embedding", torch::kPrivateUse1, &vllm_ascend::rotary_embedding);
-
     ops.def(
         "get_masked_input_and_mask(Tensor input, "
         "                         int org_vocab_start_index, "

csrc/torch_binding.cpp

@@ -36,24 +36,6 @@
 namespace vllm_ascend {
 namespace meta {
 const int64_t INT4_NUMS_IN_INT32 = 8;
-std::tuple<at::Tensor, at::Tensor> rotary_embedding_meta(
-  at::Tensor &positions,
-  at::Tensor &query,
-  at::Tensor &key,
-  int64_t head_size,
-  at::Tensor &cos_sin_cache,
-  bool is_neox) {
-    auto num_tokens = positions.sym_numel();
-    auto query_hidden_size = query.sym_numel() / num_tokens;
-    auto key_hidden_size = key.sym_numel() / num_tokens;
-
-    auto num_heads = query_hidden_size / head_size;
-    auto num_kv_heads = key_hidden_size / head_size;
-    at::Tensor query_dst = at::empty_symint({num_tokens, num_heads, head_size}, query.options());
-    at::Tensor key_dst = at::empty_symint({num_tokens, num_kv_heads, head_size}, key.options());
-
-    return {query_dst, key_dst};
-}
 
 std::tuple<at::Tensor, at::Tensor> get_masked_input_and_mask_meta(
     at::Tensor &input,
@@ -457,8 +439,6 @@ namespace {
 // the custom kernel been captured into aclgraph
 TORCH_LIBRARY_IMPL_EXPAND(CONCAT(_C, _ascend), Meta, ops) {
 
-    // Rotary embedding meta implementation
-    ops.impl("rotary_embedding", &vllm_ascend::meta::rotary_embedding_meta);
     // Masked input and mask meta implementation
     ops.impl("get_masked_input_and_mask", &vllm_ascend::meta::get_masked_input_and_mask_meta);
     // Bgmv expand