Add multiple EOS support

Ticket 157352

Author: Wovchena

src/cpp/include/openvino/genai/generation_config.hpp

@@ -38,9 +38,9 @@ enum class StopCriteria { EARLY, HEURISTIC, NEVER };
  * @param eos_token_id token_id of <eos> (end of sentence)
  * @param min_new_tokens set 0 probability for eos_token_id for the first eos_token_id generated tokens. Ignored for non continuous batching.
  *
- * @param stop_strings vector of strings that will cause pipeline to stop generating further tokens. Ignored for non continuous batching.
+ * @param stop_strings A set of strings that will cause pipeline to stop generating further tokens.
  * @param include_stop_str_in_output if set to true stop string that matched generation will be included in generation output (default: false)
- * @param stop_token_ids vector of tokens that will cause pipeline to stop generating further tokens. Ignored for non continuous batching.
+ * @param stop_token_ids A set of tokens that will cause pipeline to stop generating further tokens.
  * @param echo if set to true, output will include user prompt (default: false).
  * @param logprobs number of top logprobs computed for each position, if set to 0, logprobs are not computed and value 0.0 is returned.
  *                 Currently only single top logprob can be returned, so any logprobs > 1 is treated as logprobs == 1. (default: 0).
@@ -154,9 +154,9 @@ static constexpr ov::Property<size_t> max_new_tokens{"max_new_tokens"};
 static constexpr ov::Property<size_t> max_length{"max_length"};
 static constexpr ov::Property<bool> ignore_eos{"ignore_eos"};
 static constexpr ov::Property<size_t> min_new_tokens{"min_new_tokens"};
-static constexpr ov::Property<std::vector<std::string>> stop_strings{"stop_strings"};
+static constexpr ov::Property<std::set<std::string>> stop_strings{"stop_strings"};
 static constexpr ov::Property<bool> include_stop_str_in_output{"include_stop_str_in_output"};
-static constexpr ov::Property<std::vector<std::vector<int64_t>>> stop_token_ids{"stop_token_ids"};
+static constexpr ov::Property<std::set<int64_t>> stop_token_ids{"stop_token_ids"};
 
 static constexpr ov::Property<size_t> num_beam_groups{"num_beam_groups"};
 static constexpr ov::Property<size_t> num_beams{"num_beams"};

src/python/py_generation_config.cpp

@@ -41,9 +41,9 @@ char generation_config_docstring[] = R"(
     ignore_eos:    if set to true, then generation will not stop even if <eos> token is met.
     eos_token_id:  token_id of <eos> (end of sentence)
     min_new_tokens: set 0 probability for eos_token_id for the first eos_token_id generated tokens. Ignored for non continuous batching.
-    stop_strings: list of strings that will cause pipeline to stop generating further tokens. Ignored for non continuous batching.
+    stop_strings: a set of strings that will cause pipeline to stop generating further tokens.
     include_stop_str_in_output: if set to true stop string that matched generation will be included in generation output (default: false)
-    stop_token_ids: list of tokens that will cause pipeline to stop generating further tokens. Ignored for non continuous batching.
+    stop_token_ids: a set of tokens that will cause pipeline to stop generating further tokens.
     echo:           if set to true, the model will echo the prompt in the output.
     logprobs:       number of top logprobs computed for each position, if set to 0, logprobs are not computed and value 0.0 is returned.
                     Currently only single top logprob can be returned, so any logprobs > 1 is treated as logprobs == 1. (default: 0).
@@ -87,6 +87,9 @@ void init_generation_config(py::module_& m) {
         .def_readwrite("max_length", &GenerationConfig::max_length)
         .def_readwrite("ignore_eos", &GenerationConfig::ignore_eos)
         .def_readwrite("min_new_tokens", &GenerationConfig::min_new_tokens)
+        .def_readwrite("stop_strings", &GenerationConfig::stop_strings)
+        .def_readwrite("include_stop_str_in_output", &GenerationConfig::include_stop_str_in_output)
+        .def_readwrite("stop_token_ids", &GenerationConfig::stop_token_ids)
         .def_readwrite("num_beam_groups", &GenerationConfig::num_beam_groups)
         .def_readwrite("num_beams", &GenerationConfig::num_beams)
         .def_readwrite("diversity_penalty", &GenerationConfig::diversity_penalty)

src/python/py_utils.cpp

@@ -248,7 +248,7 @@ ov::genai::OptionalGenerationConfig update_config_from_kwargs(const ov::genai::O
             res_config.stop_strings = py::cast<std::set<std::string>>(value);
         } else if (key == "include_stop_str_in_output") {
             res_config.include_stop_str_in_output = py::cast<bool>(value);
-        } else if (key == "include_stop_str_in_output") {
+        } else if (key == "stop_token_ids") {
             res_config.stop_token_ids = py::cast<std::set<int64_t>>(value);
         } else if (key == "max_length") {
             res_config.max_length = py::cast<int>(item.second);
@@ -311,11 +311,11 @@ bool generation_config_param_to_property(std::string key, py::object value, ov::
     } else if (key == "min_new_tokens") {
         map.insert(ov::genai::min_new_tokens(py::cast<int>(value)));
     } else if (key == "stop_strings") {
-        map.insert(ov::genai::stop_strings(py::cast<std::vector<std::string>>(value)));
+        map.insert(ov::genai::stop_strings(py::cast<std::set<std::string>>(value)));
     } else if (key == "include_stop_str_in_output") {
         map.insert(ov::genai::include_stop_str_in_output(py::cast<bool>(value)));
-    } else if (key == "include_stop_str_in_output") {
-        map.insert(ov::genai::stop_token_ids(py::cast<std::vector<std::vector<int64_t>>>(value)));
+    } else if (key == "stop_token_ids") {
+        map.insert(ov::genai::stop_token_ids(py::cast<std::set<int64_t>>(value)));
     } else if (key == "num_beam_groups") {
         map.insert(ov::genai::num_beam_groups(py::cast<int>(value)));
     } else if (key == "num_beams") {

tests/python_tests/test_generate_api.py

@@ -848,3 +848,29 @@ def test_batch_switch():
     pipe = read_model(('katuni4ka/tiny-random-phi3', Path('tiny-random-phi3')))[4]
     pipe.generate(["a"], max_new_tokens=2)
     pipe.generate(["1", "2"], max_new_tokens=2)
+
+
+@pytest.mark.precommit
+@pytest.mark.nightly
+def test_stop_token_ids():
+    pipe = read_model(('katuni4ka/tiny-random-phi3', Path('tiny-random-phi3')))[4]
+    res = pipe.generate(
+        ov.Tensor([(1,)]),
+        max_new_tokens=3,
+        stop_token_ids={-1, 9935},
+        include_stop_str_in_output=False
+    )
+    assert 2 == len(res.tokens[0])
+    assert 9935 in res.tokens[0]
+
+
+@pytest.mark.precommit
+@pytest.mark.nightly
+def test_stop_strings():
+    pipe = read_model(('katuni4ka/tiny-random-phi3', Path('tiny-random-phi3')))[4]
+    res = pipe.generate(
+        "",
+        max_new_tokens=5,
+        stop_strings={"ignored", "боль"}
+    )
+    assert "боль" not in res