rm get_work_group_size() by local cache for performance (ggml-org#8286)

Co-authored-by: arthw <[email protected]>

Author: NeoZhangJianyu

Diff for: ggml/src/ggml-sycl.cpp

@@ -49,7 +49,7 @@ bool   ggml_backend_is_sycl(ggml_backend_t backend);
 int    ggml_backend_sycl_get_device(ggml_backend_t backend);
 static bool ggml_backend_buffer_is_sycl_split(ggml_backend_buffer_t buffer);
 static inline int get_sycl_env(const char *env_name, int default_val);
-static inline int get_work_group_size(const sycl::device& device);
+
 
 void dev2dev_memcpy(sycl::queue &q_dst, sycl::queue &q_src, void *ptr_dst,
                     const void *ptr_src, size_t size) {
@@ -1912,9 +1912,9 @@ static void soft_max_f32_submitter(const float * x, const float * mask, float *
 static void soft_max_f32_sycl(const float * x, const float * mask,
                               float * dst, const int ncols_x, const int nrows_x,
                               const int nrows_y, const float scale, const float max_bias,
-                              queue_ptr stream) {
+                              queue_ptr stream, int device) {
     int nth = WARP_SIZE;
-    int max_block_size = get_work_group_size(stream->get_device());
+    int max_block_size = ggml_sycl_info().max_work_group_sizes[device];
     while (nth < ncols_x && nth < max_block_size) nth *= 2;
     if (nth>max_block_size) nth = max_block_size;
 
@@ -2156,6 +2156,8 @@ static ggml_sycl_device_info ggml_sycl_init() {
 
         info.devices[i].cc =
             100 * prop.get_major_version() + 10 * prop.get_minor_version();
+
+        info.max_work_group_sizes[i] = prop.get_max_work_group_size();
     }
 
     for (int id = 0; id < info.device_count; ++id) {
@@ -3031,7 +3033,7 @@ inline void ggml_sycl_op_soft_max(ggml_backend_sycl_context & ctx, const ggml_te
     memcpy(&max_bias, dst->op_params + 1, sizeof(float));
 
     soft_max_f32_sycl(src0_dd, src1 ? src1_dd : nullptr, dst_dd, ne00,
-                      nrows_x, nrows_y, scale, max_bias, main_stream);
+                      nrows_x, nrows_y, scale, max_bias, main_stream, ctx.device);
 }
 
 inline void ggml_sycl_op_scale(ggml_backend_sycl_context & ctx, const ggml_tensor *src0, const ggml_tensor *src1,

Diff for: ggml/src/ggml-sycl/common.hpp

@@ -47,10 +47,6 @@ static int g_ggml_sycl_debug = 0;
     }                                                                    \
   }()
 
-// #define DEBUG_SYCL_MALLOC
-
-static int g_work_group_size = 0;
-// typedef sycl::half ggml_fp16_t;
 
 #define __SYCL_ARCH__ DPCT_COMPATIBILITY_TEMP
 #define VER_4VEC 610 // todo for hardward optimize.
@@ -193,6 +189,8 @@ struct ggml_sycl_device_info {
     sycl_device_info devices[GGML_SYCL_MAX_DEVICES] = {};
 
     std::array<float, GGML_SYCL_MAX_DEVICES> default_tensor_split = {};
+
+    int max_work_group_sizes[GGML_SYCL_MAX_DEVICES] = {0};
 };
 
 const ggml_sycl_device_info & ggml_sycl_info();
@@ -295,15 +293,6 @@ struct ggml_backend_sycl_context {
     }
 };
 
-// common host functions
-
-static inline int get_work_group_size(const sycl::device& device) {
-    dpct::device_info prop;
-    dpct::get_device_info(prop, device);
-    return prop.get_max_work_group_size();
-}
-
-
 // common device functions
 
 static __dpct_inline__ float warp_reduce_sum(float x,

Diff for: ggml/src/ggml-sycl/norm.cpp

@@ -181,7 +181,7 @@ static void rms_norm_f32(const float* x, float* dst, const int ncols, const floa
 
 static void norm_f32_sycl(const float* x, float* dst, const int ncols,
     const int nrows, const float eps,
-    queue_ptr stream) {
+    queue_ptr stream, int device) {
     GGML_ASSERT(ncols % WARP_SIZE == 0);
     if (ncols < 1024) {
         const sycl::range<3> block_dims(1, 1, WARP_SIZE);
@@ -197,7 +197,7 @@ static void norm_f32_sycl(const float* x, float* dst, const int ncols,
             });
     }
     else {
-        const int work_group_size = get_work_group_size(stream->get_device());
+        const int work_group_size = ggml_sycl_info().max_work_group_sizes[device];
         const sycl::range<3> block_dims(1, 1, work_group_size);
         /*
         DPCT1049:17: The work-group size passed to the SYCL kernel may exceed
@@ -222,7 +222,7 @@ static void norm_f32_sycl(const float* x, float* dst, const int ncols,
 
 static void group_norm_f32_sycl(const float* x, float* dst,
     const int num_groups, const int group_size,
-    const int ne_elements, queue_ptr stream) {
+    const int ne_elements, queue_ptr stream, int device) {
     static const float eps = 1e-6f;
     if (group_size < 1024) {
         const sycl::range<3> block_dims(1, 1, WARP_SIZE);
@@ -240,7 +240,7 @@ static void group_norm_f32_sycl(const float* x, float* dst,
             });
     }
     else {
-        const int work_group_size = get_work_group_size(stream->get_device());
+        const int work_group_size = ggml_sycl_info().max_work_group_sizes[device];
         const sycl::range<3> block_dims(1, 1, work_group_size);
         /*
         DPCT1049:18: The work-group size passed to the SYCL kernel may exceed
@@ -269,7 +269,7 @@ static void group_norm_f32_sycl(const float* x, float* dst,
 
 static void rms_norm_f32_sycl(const float* x, float* dst, const int ncols,
     const int nrows, const float eps,
-    queue_ptr stream) {
+    queue_ptr stream, int device) {
     GGML_ASSERT(ncols % WARP_SIZE == 0);
     // printf("%s ncols=%d, nrows=%d, WARP_SIZE=%d\n", __func__, ncols, nrows, WARP_SIZE);
     if (ncols < 1024) {
@@ -286,7 +286,7 @@ static void rms_norm_f32_sycl(const float* x, float* dst, const int ncols,
             });
     }
     else {
-        const int work_group_size = get_work_group_size(stream->get_device());
+        const int work_group_size = ggml_sycl_info().max_work_group_sizes[device];
         const sycl::range<3> block_dims(1, 1, work_group_size);
         /*
         DPCT1049:19: The work-group size passed to the SYCL kernel may exceed
@@ -322,7 +322,7 @@ void ggml_sycl_op_norm(ggml_backend_sycl_context& ctx, const ggml_tensor* src0,
     float eps;
     memcpy(&eps, dst->op_params, sizeof(float));
 
-    norm_f32_sycl(src0_dd, dst_dd, ne00, nrows, eps, main_stream);
+    norm_f32_sycl(src0_dd, dst_dd, ne00, nrows, eps, main_stream, ctx.device);
 
     (void)src1;
     (void)dst;
@@ -340,7 +340,7 @@ void ggml_sycl_op_group_norm(ggml_backend_sycl_context& ctx, const ggml_tensor*
 
     int num_groups = dst->op_params[0];
     int group_size = src0->ne[0] * src0->ne[1] * ((src0->ne[2] + num_groups - 1) / num_groups);
-    group_norm_f32_sycl(src0_dd, dst_dd, num_groups, group_size, src0->ne[0] * src0->ne[1] * src0->ne[2], main_stream);
+    group_norm_f32_sycl(src0_dd, dst_dd, num_groups, group_size, src0->ne[0] * src0->ne[1] * src0->ne[2], main_stream, ctx.device);
 
     (void)src1;
     (void)dst;
@@ -362,7 +362,7 @@ void ggml_sycl_op_rms_norm(ggml_backend_sycl_context& ctx, const ggml_tensor* sr
     float eps;
     memcpy(&eps, dst->op_params, sizeof(float));
 
-    rms_norm_f32_sycl(src0_dd, dst_dd, ne00, nrows, eps, main_stream);
+    rms_norm_f32_sycl(src0_dd, dst_dd, ne00, nrows, eps, main_stream, ctx.device);
 
     (void)src1;
     (void)dst;