[Frontend] Customizable RoPE theta (#5197)

vllm/engine/llm_engine.py

@@ -162,7 +162,7 @@ class LLMEngine:
             "Initializing an LLM engine (v%s) with config: "
             "model=%r, speculative_config=%r, tokenizer=%r, "
             "skip_tokenizer_init=%s, tokenizer_mode=%s, revision=%s, "
-            "rope_scaling=%r, tokenizer_revision=%s, "
+            "rope_scaling=%r, rope_theta=%r, tokenizer_revision=%s, "
             "trust_remote_code=%s, dtype=%s, max_seq_len=%d, "
             "download_dir=%r, load_format=%s, tensor_parallel_size=%d, "
             "disable_custom_all_reduce=%s, quantization=%s, "
@@ -177,6 +177,7 @@ class LLMEngine:
             model_config.tokenizer_mode,
             model_config.revision,
             model_config.rope_scaling,
+            model_config.rope_theta,
             model_config.tokenizer_revision,
             model_config.trust_remote_code,
             model_config.dtype,