Added mirostat sampling to the high level API.

Author: Maximilian-Winter

llama_cpp/llama.py

@@ -257,6 +257,11 @@ def _sample_top_p_top_k(
         top_k: llama_cpp.c_int,
         top_p: llama_cpp.c_float,
         temp: llama_cpp.c_float,
+        mirostat_mode: llama_cpp.c_int,
+        mirostat_tau: llama_cpp.c_float,
+        mirostat_eta: llama_cpp.c_float,
+        mirostat_mu: llama_cpp.c_float,
+        mirostat_m: llama_cpp.c_int,
         repeat_penalty: llama_cpp.c_float,
     ):
         assert self.ctx is not None
@@ -287,7 +292,34 @@ def _sample_top_p_top_k(
             candidates=llama_cpp.ctypes.pointer(candidates),
             penalty=repeat_penalty,
         )
-        if float(temp.value) == 0.0:
+        if mirostat_mode == 1:
+            llama_cpp.llama_sample_temperature(
+                ctx=self.ctx,
+                candidates=llama_cpp.ctypes.pointer(candidates),
+                temp=temp,
+            )
+            llama_cpp.llama_sample_token_mirostat(
+                ctx=self.ctx,
+                candidates=llama_cpp.ctypes.pointer(candidates),
+                tau=mirostat_tau,
+                eta=mirostat_eta,
+                mu=mirostat_mu,
+                m=mirostat_m
+            )
+        elif mirostat_mode == 2:
+            llama_cpp.llama_sample_temperature(
+                ctx=self.ctx,
+                candidates=llama_cpp.ctypes.pointer(candidates),
+                temp=temp,
+            )
+            llama_cpp.llama_sample_token_mirostat_v2(
+                ctx=self.ctx,
+                candidates=llama_cpp.ctypes.pointer(candidates),
+                tau=mirostat_tau,
+                eta=mirostat_eta,
+                mu=mirostat_mu
+            )
+        elif float(temp.value) == 0.0:
             return llama_cpp.llama_sample_token_greedy(
                 ctx=self.ctx,
                 candidates=llama_cpp.ctypes.pointer(candidates),
@@ -328,6 +360,11 @@ def sample(
         top_k: int,
         top_p: float,
         temp: float,
+        mirostat_mode: int,
+        mirostat_tau: float,
+        mirostat_eta: float,
+        mirostat_mu: float,
+        mirostat_m: int,
         repeat_penalty: float,
     ):
         """Sample a token from the model.
@@ -353,6 +390,11 @@ def sample(
             top_k=llama_cpp.c_int(top_k),
             top_p=llama_cpp.c_float(top_p),
             temp=llama_cpp.c_float(temp),
+            mirostat=llama_cpp.c_int(mirostat_mode),
+            mirostat_mu=llama_cpp.c_float(mirostat_mu),
+            mirostat_tau=llama_cpp.c_float(mirostat_tau),
+            mirostat_eta=llama_cpp.c_float(mirostat_eta),
+            mirostat_m=llama_cpp.c_int(mirostat_m),
             repeat_penalty=llama_cpp.c_float(repeat_penalty),
         )
 
@@ -362,6 +404,11 @@ def generate(
         top_k: int,
         top_p: float,
         temp: float,
+        mirostat: int,
+        mirostat_tau: float,
+        mirostat_eta: float,
+        mirostat_mu: float,
+        mirostat_m: int,
         repeat_penalty: float,
         reset: bool = True,
     ) -> Generator[
@@ -416,6 +463,11 @@ def generate(
                 top_k=top_k,
                 top_p=top_p,
                 temp=temp,
+                mirostat_mode=mirostat_mode,
+                mirostat_tau=mirostat_tau,
+                mirostat_eta=mirostat_eta,
+                mirostat_mu=mirostat_mu,
+                mirostat_m=mirostat_m,
                 repeat_penalty=repeat_penalty,
             )
             tokens_or_none = yield token
@@ -486,6 +538,11 @@ def _create_completion(
         suffix: Optional[str] = None,
         max_tokens: int = 16,
         temperature: float = 0.8,
+        mirostat_mode: int = 0,
+        mirostat_tau: float = 5.0,
+        mirostat_eta: float = 0.1,
+        mirostat_mu: float = 10,
+        mirostat_m: int = 100,
         top_p: float = 0.95,
         logprobs: Optional[int] = None,
         echo: bool = False,
@@ -536,6 +593,11 @@ def _create_completion(
             top_k=top_k,
             top_p=top_p,
             temp=temperature,
+            mirostat_mode=mirostat_mode,
+            mirostat_tau=mirostat_tau,
+            mirostat_eta=mirostat_eta,
+            mirostat_mu=mirostat_mu,
+            mirostat_m=mirostat_m,
             repeat_penalty=repeat_penalty,
         ):
             if token == llama_cpp.llama_token_eos():
@@ -707,6 +769,11 @@ def create_completion(
         suffix: Optional[str] = None,
         max_tokens: int = 128,
         temperature: float = 0.8,
+        mirostat_mode: int = 0,
+        mirostat_tau: float = 5.0,
+        mirostat_eta: float = 0.1,
+        mirostat_mu: float = 10,
+        mirostat_m: int = 100,
         top_p: float = 0.95,
         logprobs: Optional[int] = None,
         echo: bool = False,
@@ -742,6 +809,11 @@ def create_completion(
             suffix=suffix,
             max_tokens=max_tokens,
             temperature=temperature,
+            mirostat_mode=mirostat_mode,
+            mirostat_tau=mirostat_tau,
+            mirostat_eta=mirostat_eta,
+            mirostat_mu=mirostat_mu,
+            mirostat_m=mirostat_m,
             top_p=top_p,
             logprobs=logprobs,
             echo=echo,
@@ -762,6 +834,11 @@ def __call__(
         suffix: Optional[str] = None,
         max_tokens: int = 128,
         temperature: float = 0.8,
+        mirostat_mode: int = 0,
+        mirostat_tau: float = 5.0,
+        mirostat_eta: float = 0.1,
+        mirostat_mu: float = 10,
+        mirostat_m: int = 100,
         top_p: float = 0.95,
         logprobs: Optional[int] = None,
         echo: bool = False,
@@ -797,6 +874,11 @@ def __call__(
             suffix=suffix,
             max_tokens=max_tokens,
             temperature=temperature,
+            mirostat_mode=mirostat_mode,
+            mirostat_tau=mirostat_tau,
+            mirostat_eta=mirostat_eta,
+            mirostat_mu=mirostat_mu,
+            mirostat_m=mirostat_m,
             top_p=top_p,
             logprobs=logprobs,
             echo=echo,