p800 elementwise sub

src/infiniop/ops/sub/kunlun/sub_kunlun.h

+#ifndef __SUB_KUNLUN_API_H__
+#define __SUB_KUNLUN_API_H__
+
+#include "../../../elementwise/kunlun/elementwise_kunlun_api.h"
+
+ELEMENTWISE_DESCRIPTOR(sub, kunlun)
+
+#endif // __SUB_KUNLUN_API_H__

src/infiniop/ops/sub/kunlun/sub_kunlun.xpu

+#include "../../../elementwise/kunlun/elementwise_kunlun.h"
+#include "sub_kunlun.h"
+
+namespace op::elementwise::kunlun {
+
+typedef struct SubOp {
+public:
+    static constexpr int num_inputs = 2;
+    template <typename T>
+    inline __device__ T operator()(const T *inputs) const {
+        T a = inputs[0];
+        T b = inputs[1];
+        return a - b;
+    }
+    // bfloat16 特化版本（使用 float 计算精度）
+    inline __device__ bfloat16_t operator()(const bfloat16_t *inputs) const {
+        float a_f = __bfloat162float(inputs[0]);
+        float b_f = __bfloat162float(inputs[1]);
+        return __float2bfloat16(a_f - b_f);
+    }
+} SubOp;
+
+INSTANTIATE_ELEMENTWISE_KERNEL(SubOp::num_inputs, SubOp, float);
+INSTANTIATE_ELEMENTWISE_KERNEL(SubOp::num_inputs, SubOp, half);
+INSTANTIATE_ELEMENTWISE_KERNEL(SubOp::num_inputs, SubOp, bfloat16_t);
+} // namespace op::elementwise::kunlun
+
+namespace op::sub::kunlun {
+
+Descriptor::~Descriptor() = default;
+
+infiniStatus_t Descriptor::create(
+    infiniopHandle_t handle_,
+    Descriptor **desc_ptr,
+    infiniopTensorDescriptor_t out_desc,
+    std::vector<infiniopTensorDescriptor_t> input_desc_vec) {
+
+    auto handle = reinterpret_cast<device::kunlun::Handle *>(handle_);
+    auto dtype = out_desc->dtype();
+
+    const auto &a_desc = input_desc_vec.at(0);
+    const auto &b_desc = input_desc_vec.at(1);
+    const auto &c_shape = out_desc->shape();
+    const auto &a_shape = a_desc->shape();
+    const auto &b_shape = b_desc->shape();
+
+    CHECK_DTYPE(dtype, INFINI_DTYPE_F16, INFINI_DTYPE_F32, INFINI_DTYPE_BF16);
+
+    CHECK_SAME_SHAPE(c_shape, a_shape, b_shape);
+
+    // create KUNLUN elementwise descriptor
+    CREATE_ELEMENTWISE_KUNLUN_DESCRIPTOR(handle, dtype, out_desc, input_desc_vec)
+
+    return INFINI_STATUS_SUCCESS;
+}
+
+infiniStatus_t Descriptor::calculate(
+    void *workspace,
+    size_t workspace_size,
+    void *output,
+    std::vector<const void *> inputs,
+    void *stream) const {
+
+    if (workspace_size < _workspace_size) {
+        return INFINI_STATUS_INSUFFICIENT_WORKSPACE;
+    }
+
+    switch (_dtype) {
+    case INFINI_DTYPE_F16:
+        return _device_info->calculate<8, op::elementwise::kunlun::SubOp, half>(_info, workspace, output, inputs, stream);
+    case INFINI_DTYPE_BF16:
+        return _device_info->calculate<8, op::elementwise::kunlun::SubOp, bfloat16_t>(_info, workspace, output, inputs, stream);
+    case INFINI_DTYPE_F32:
+        return _device_info->calculate<8, op::elementwise::kunlun::SubOp, float>(_info, workspace, output, inputs, stream);
+    default:
+        return INFINI_STATUS_BAD_TENSOR_DTYPE;
+    }
+
+    return INFINI_STATUS_SUCCESS;
+}
+} // namespace op::sub::kunlun

src/infiniop/ops/sub/operator.cc

@@ -11,6 +11,9 @@
 #ifdef ENABLE_METAX_API
 #include "metax/sub_metax.h"
 #endif
+#ifdef ENABLE_KUNLUN_API
+#include "kunlun/sub_kunlun.h"
+#endif
 
 __C infiniStatus_t infiniopCreateSubDescriptor(
     infiniopHandle_t handle,
@@ -42,6 +45,9 @@ __C infiniStatus_t infiniopCreateSubDescriptor(
 #ifdef ENABLE_METAX_API
         CREATE(INFINI_DEVICE_METAX, metax);
 #endif
+#ifdef ENABLE_KUNLUN_API
+        CREATE(INFINI_DEVICE_KUNLUN, kunlun);
+#endif
 
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
@@ -70,6 +76,10 @@ __C infiniStatus_t infiniopGetSubWorkspaceSize(infiniopSubDescriptor_t desc, siz
 #ifdef ENABLE_METAX_API
         GET(INFINI_DEVICE_METAX, metax);
 #endif
+#ifdef ENABLE_KUNLUN_API
+        GET(INFINI_DEVICE_KUNLUN, kunlun);
+#endif
+
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
     }
@@ -106,6 +116,9 @@ __C infiniStatus_t infiniopSub(
 #ifdef ENABLE_METAX_API
         CALCULATE(INFINI_DEVICE_METAX, metax);
 #endif
+#ifdef ENABLE_KUNLUN_API
+        CALCULATE(INFINI_DEVICE_KUNLUN, kunlun);
+#endif
 
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
@@ -136,6 +149,9 @@ infiniopDestroySubDescriptor(infiniopSubDescriptor_t desc) {
 #ifdef ENABLE_METAX_API
         DELETE(INFINI_DEVICE_METAX, metax);
 #endif
+#ifdef ENABLE_KUNLUN_API
+        DELETE(INFINI_DEVICE_KUNLUN, kunlun);
+#endif
 
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;