Fix ROPE accuracy when freq_scale != 1

Author: wine99

ggml/src/ggml-openvino/ggml-openvino.cpp

@@ -319,12 +319,8 @@ static bool is_op_unsupported_case(const ggml_tensor* op) {
             return true;
         }
         float freq_scale;
-        memcpy(&freq_scale, op_params + 6, sizeof(float));
-        if (freq_scale != 0.0f && freq_scale != 1.0f) {
-            GGML_LOG_WARN("OpenVINO backend does not support ROPE with freq_scale %f != 1.0f\n", freq_scale);
-            return true;
-        }
         float ext_factor;
+        memcpy(&freq_scale, op_params + 6, sizeof(float));
         memcpy(&ext_factor, op_params + 7, sizeof(float));
         if (ext_factor != 0.0f) {
             GGML_LOG_WARN("OpenVINO backend does not support ROPE with ext_factor %f != 0.0f\n", ext_factor);

ggml/src/ggml-openvino/openvino/utils.cpp

@@ -140,7 +140,7 @@ std::pair<ov::Output<Node>, ov::Output<Node>> make_sin_cos(int32_t* rope_params,
     ggml_rope_yarn_corr_dims(n_dims, n_ctx_orig, freq_base, beta_fast, beta_slow, corr_dims);
 
     std::vector<float> factor(n_dims / 2);
-    factor[0] = freq_scale;
+    factor[0] = 1.0f;
     for (size_t i = 1; i < factor.size(); i++) {
         factor[i] = theta_scale * factor[i - 1];
     }