Fix f16_sycl cpy call from Arc (#5411)

* fix f16_sycl cpy call

* rm old logic

* add fp16 build CI

* use macro

* format fix

.github/workflows/build.yml

@@ -184,6 +184,47 @@ jobs:
           cmake -DLLAMA_SYCL=ON -DCMAKE_C_COMPILER=icx -DCMAKE_CXX_COMPILER=icpx ..
           cmake --build . --config Release -j $(nproc)
 
+  ubuntu-22-cmake-sycl-fp16:
+    runs-on: ubuntu-22.04
+
+    continue-on-error: true
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: add oneAPI to apt
+        shell: bash
+        run: |
+          cd /tmp
+          wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+          sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+          rm GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB
+          sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
+
+      - name: install oneAPI dpcpp compiler
+        shell: bash
+        run: |
+          sudo apt update
+          sudo apt install intel-oneapi-compiler-dpcpp-cpp
+
+      - name: install oneAPI MKL library
+        shell: bash
+        run: |
+          sudo apt install intel-oneapi-mkl-devel
+
+      - name: Clone
+        id: checkout
+        uses: actions/checkout@v3
+
+      - name: Build
+        id: cmake_build
+        run: |
+          source /opt/intel/oneapi/setvars.sh
+          mkdir build
+          cd build
+          cmake -DLLAMA_SYCL=ON -DCMAKE_C_COMPILER=icx -DCMAKE_CXX_COMPILER=icpx -DLLAMA_SYCL_F16=ON ..
+          cmake --build . --config Release -j $(nproc)
+
   # TODO: build with LLAMA_NO_METAL because test-backend-ops fail on "Apple Paravirtual device" and I don't know
   #       how to debug it.
   #       ref: https://github.com/ggerganov/llama.cpp/actions/runs/7131777249/job/19420981052#step:5:1124

ggml-sycl.cpp

@@ -12148,7 +12148,8 @@ inline void ggml_sycl_op_dequantize_mul_mat_vec(
     const int64_t src1_ncols, const int64_t src1_padded_row_size,
     const dpct::queue_ptr &stream) {
 
-    const int64_t ne00 = src0->ne[0];
+    GGML_TENSOR_BINARY_OP_LOCALS
+
     const int64_t row_diff = row_high - row_low;
 
     // on some GPUs it is faster to convert src1 to half and to use half precision intrinsics
@@ -12167,8 +12168,9 @@ inline void ggml_sycl_op_dequantize_mul_mat_vec(
         } else {
             src1_dfloat = src1_dfloat_a.alloc(ne00);
             ggml_cpy_f32_f16_sycl((const char *)src1_ddf_i, (char *)src1_dfloat,
-                                  ne00, ne00, 1, sizeof(float), 0, 0, ne00, 1,
+                                  ne00, ne00, ne01, ne02, nb00, nb01, nb02,
-                                  sizeof(sycl::half), 0, 0, stream);
+                                  nb03, ne10, ne11, ne12, nb10, nb11, nb12,
+                                  nb13, stream);
         }
     }
 #else