update

.github/workflows/llm_bench-python.yml

@@ -82,6 +82,12 @@ jobs:
       run: |
         wget -O ./ov_models/soulcard.safetensors https://civitai.com/api/download/models/72591
         python ./tools/llm_bench/benchmark.py -m ./ov_models/dreamlike-art-dreamlike-anime-1.0/FP16/ -pf ./tools/llm_bench/prompts/stable-diffusion.jsonl -d cpu -n 1 --genai  --lora ./ov_models/soulcard.safetensors --lora_alphas 0.7
+    - name: Test dolly-v2-7b and dolly-v2-3b in Speculative Deconding mode on Linux
+      run: |
+        huggingface-cli download OpenVINO/dolly-v2-3b-fp16-ov  --local-dir  ../ov_models/dolly-v2-3b-fp16-ov/FP16
+        huggingface-cli download OpenVINO/dolly-v2-3b-int4-ov  --local-dir  ../ov_models/dolly-v2-3b-int4-ov/INT4
+        python ./tools/llm_bench/benchmark.py -m ./ov_models/dolly-v2-3b-fp16-ov/FP16/ --draft_model ./ov_models/dolly-v2-3b-fp16-ov/INT4/ -p "What is openvino?" -d cpu --draft_device cpu -n 1 --genai  --assistant_confidence_threshold 0.4
+        python ./tools/llm_bench/benchmark.py -m ./ov_models/dolly-v2-3b-fp16-ov/FP16/ --draft_model ./ov_models/dolly-v2-3b-fp16-ov/INT4/ -p "What is openvino?" -d cpu --draft_device cpu -n 1 --genai  --num_assistant_tokens 5
     - name: Test whisper-tiny on Linux
       run: |
         GIT_LFS_SKIP_SMUDGE=1 git clone --depth 1 --branch main --single-branch https://huggingface.co/datasets/facebook/multilingual_librispeech

tools/llm_bench/benchmark.py

@@ -140,12 +140,14 @@ def get_argprser():
     parser.add_argument('--lora_alphas', nargs='*', help='Alphas params for LoRA adapters.', required=False, default=[])
     parser.add_argument("--use_cb", action="store_true", help="Use Continuous Batching inference mode")
     parser.add_argument("--cb_config", required=False, default=None, help="Path to file with Continuous Batching Scheduler settings or dict")
-    parser.add_argument("--draft_model", required=False, default=None, 
-                        help="Path to draft model folder including IR files for Speculative decoding generation.")
-    parser.add_argument("--draft_device", required=False, default='cpu', help="Inference device for Speculative decoding generation.")
-    parser.add_argument("--num_assistant_tokens", required=False, default=5, help="Config option num_assistant_tokens for Speculative decoding")
-    parser.add_argument("--assistant_confidence_threshold", required=False, default=0, 
-                        help="Config option assistant_confidence_threshold for Speculative decodin")
+    parser.add_argument("--draft_model", required=False, default=None,
+                        help="Path to draft model folder including IR files for Speculative decoding generation")
+    parser.add_argument("--draft_device", required=False, default=None, help="Inference device for Speculative decoding of draft model")
+    parser.add_argument("--draft_cb_config", required=False, default=None,
+                        help="Path to file with Continuous Batching Scheduler settings or dict for Speculative decoding of draft model")
+    parser.add_argument("--num_assistant_tokens", required=False, default=None, help="Config option num_assistant_tokens for Speculative decoding")
+    parser.add_argument("--assistant_confidence_threshold", required=False, default=None,
+                        help="Config option assistant_confidence_threshold for Speculative decoding")
     parser.add_argument(
         '--end_token_stopping',
         action='store_true',

tools/llm_bench/llm_bench_utils/model_utils.py

@@ -143,8 +143,6 @@ def analyze_args(args):
     model_args["cb_config"] = cb_config
     model_args['draft_model'] = args.draft_model
     model_args['draft_device'] = args.draft_device
-    if (args.num_assistant_tokens > 0 and args.assistant_confidence_threshold > 0):
-        raise RuntimeError("Parameters `assistant_confidence_threshold` and `num_assistant_tokens` are mutually exclusive")
     model_args['num_assistant_tokens'] = args.num_assistant_tokens
     model_args['assistant_confidence_threshold'] = args.assistant_confidence_threshold
     return model_path, model_framework, model_args, model_name

tools/llm_bench/llm_bench_utils/ov_utils.py

@@ -232,8 +232,8 @@ def create_genai_text_gen_model(model_path, device, ov_config, **kwargs):
         if not Path(draft_model_path).exists():
             raise RuntimeError(f'==Failure ==: draft model by path:{draft_model_path} is not exists')
         log.info("Speculative Decoding is activated")
-
-        ov_config['draft_model'] = openvino_genai.draft_model(draft_model_path, kwargs['draft_device'].upper())
+        draft_device = kwargs.get('draft_device', None) or device
+        ov_config['draft_model'] = openvino_genai.draft_model(draft_model_path, draft_device.upper())
 
     adapter_config = get_lora_config(kwargs.get("lora", None), kwargs.get("lora_alphas", []))
     if adapter_config:

tools/llm_bench/task/text_generation.py

@@ -199,11 +199,14 @@ def run_text_generation_genai(input_text, num, model, tokenizer, args, iter_data
     gen_config.num_beams = args["num_beams"]
     gen_config.do_sample = False
     if args.get('draft_model', ''):
-        gen_config.num_assistant_tokens = args['num_assistant_tokens']
-        gen_config.assistant_confidence_threshold = args['assistant_confidence_threshold']
-        log.info("Speculative decoding config: ")
-        log.info(f"    num_assistant_tokens {gen_config.num_assistant_tokens}")
-        log.info(f"    assistant_confidence_threshold {gen_config.assistant_confidence_threshold}")
+        config_info = "Speculative decoding config: "
+        if args.get('num_assistant_tokens', None):
+            gen_config.num_assistant_tokens = args['num_assistant_tokens']
+            config_info += f" num_assistant_tokens {gen_config.num_assistant_tokens}"
+        if args.get('assistant_confidence_threshold', None):
+            gen_config.assistant_confidence_threshold = args['assistant_confidence_threshold']
+            config_info += f" assistant_confidence_threshold {gen_config.assistant_confidence_threshold}"
+        log.info(config_info)
     start = time.perf_counter()
     generation_result = model.generate(input_text_list, gen_config)
     end = time.perf_counter()
@@ -328,11 +331,14 @@ def run_text_generation_genai_with_stream(input_text, num, model, tokenizer, arg
     gen_config.num_beams = args["num_beams"]
     gen_config.do_sample = False
     if args.get('draft_model', ''):
-        gen_config.num_assistant_tokens = args['num_assistant_tokens']
-        gen_config.assistant_confidence_threshold = args['assistant_confidence_threshold']
-        log.info("Speculative decoding config: ")
-        log.info(f"    num_assistant_tokens {gen_config.num_assistant_tokens}")
-        log.info(f"    assistant_confidence_threshold {gen_config.assistant_confidence_threshold}")
+        config_info = "Speculative decoding config: "
+        if args.get("num_assistant_tokens", None):
+            gen_config.num_assistant_tokens = int(args["num_assistant_tokens"])
+            config_info += f'num_assistant_tokens {args["num_assistant_tokens"]}'
+        if args.get("assistant_confidence_threshold", None):
+            gen_config.assistant_confidence_threshold = float(args["assistant_confidence_threshold"])
+            config_info += f'assistant_confidence_threshold {args["assistant_confidence_threshold"]}'
+        log.info(config_info)
     start = time.perf_counter()
     generated_tokens = model.generate(input_data, gen_config, streamer=streamer).tokens
     end = time.perf_counter()