645 lines
23 KiB
Python
645 lines
23 KiB
Python
from abc import ABC, abstractmethod
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from enum import Enum, auto
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import os
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import pathlib
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import copy
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import re
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from typing import Dict, Iterable, List, Tuple, Union, Type
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from utils.log import quick_log
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from fastapi import HTTPException
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from pydantic import BaseModel, Field
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from routes import state_cache
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import global_var
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os.environ["TORCH_EXTENSIONS_DIR"] = f"{pathlib.Path(__file__).parent.parent.resolve()}"
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class RWKVType(Enum):
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NoneType = auto()
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Raven = auto()
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World = auto()
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Music = auto()
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class AbstractRWKV(ABC):
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def __init__(self, model, pipeline):
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self.EOS_ID = 0
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self.name = "rwkv"
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self.model = model
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self.pipeline = pipeline
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self.model_state = None
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self.model_tokens = []
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self.rwkv_type: RWKVType = RWKVType.NoneType
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self.tokenizer_len = len(model.w["emb.weight"])
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self.max_tokens_per_generation = 500
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self.temperature = 1
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self.top_p = 0.3
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self.top_k = 0
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self.penalty_alpha_presence = 0
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self.penalty_alpha_frequency = 1
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@abstractmethod
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def adjust_occurrence(self, occurrence: Dict, token: int):
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pass
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@abstractmethod
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def adjust_forward_logits(self, logits: List[float], occurrence: Dict, i: int):
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pass
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# Model only saw '\n\n' as [187, 187] before, but the tokenizer outputs [535] for it at the end
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@abstractmethod
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def fix_tokens(self, tokens) -> List[int]:
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pass
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@abstractmethod
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def run_rnn(
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self, _tokens: List[str], newline_adj: int = 0
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) -> Tuple[List[float], int]:
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pass
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@abstractmethod
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def delta_postprocess(self, delta: str) -> str:
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pass
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def get_embedding(self, input: str, fast_mode: bool) -> Tuple[List[float], int]:
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import numpy as np
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if fast_mode:
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embedding, token_len = self.__fast_embedding(
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self.fix_tokens(self.pipeline.encode(input)), None
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)
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else:
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self.model_state = None
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self.model_tokens = []
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_, token_len = self.run_rnn(self.fix_tokens(self.pipeline.encode(input)))
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embedding = self.model_state[-11].tolist()
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embedding = (embedding / np.linalg.norm(embedding)).tolist()
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return embedding, token_len
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def __fast_embedding(self, tokens: List[str], state):
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import torch
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tokens = [int(x) for x in tokens]
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token_len = len(tokens)
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self = self.model
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with torch.no_grad():
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w = self.w
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args = self.args
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if state == None:
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state = [None] * args.n_layer * 5
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for i in range(
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args.n_layer
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): # state: 0=att_xx 1=att_aa 2=att_bb 3=att_pp 4=ffn_xx
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dd = self.strategy[i]
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dev = dd.device
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atype = dd.atype
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state[i * 5 + 0] = torch.zeros(
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args.n_embd, dtype=atype, requires_grad=False, device=dev
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).contiguous()
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state[i * 5 + 1] = torch.zeros(
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args.n_embd, dtype=torch.float, requires_grad=False, device=dev
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).contiguous()
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state[i * 5 + 2] = torch.zeros(
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args.n_embd, dtype=torch.float, requires_grad=False, device=dev
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).contiguous()
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state[i * 5 + 3] = (
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torch.zeros(
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args.n_embd,
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dtype=torch.float,
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requires_grad=False,
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device=dev,
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).contiguous()
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- 1e30
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)
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state[i * 5 + 4] = torch.zeros(
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args.n_embd, dtype=atype, requires_grad=False, device=dev
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).contiguous()
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break
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seq_mode = len(tokens) > 1
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x = w["emb.weight"][tokens if seq_mode else tokens[0]]
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for i in range(args.n_layer):
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bbb = f"blocks.{i}."
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att = f"blocks.{i}.att."
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ffn = f"blocks.{i}.ffn."
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dd = self.strategy[i]
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dev = dd.device
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atype = dd.atype
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wtype = dd.wtype
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if seq_mode:
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if "cuda" in str(dev) and os.environ["RWKV_CUDA_ON"] == "1":
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ATT = (
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self.cuda_att_seq
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if wtype != torch.uint8
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else self.cuda_att_seq_i8
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)
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else:
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ATT = self.att_seq if wtype != torch.uint8 else self.att_seq_i8
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FFN = self.ffn_seq if wtype != torch.uint8 else self.ffn_seq_i8
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else:
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ATT = self.att_one if wtype != torch.uint8 else self.att_one_i8
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FFN = self.ffn_one if wtype != torch.uint8 else self.ffn_one_i8
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x = x.to(dtype=atype, device=dev)
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kw = w[f"{att}key.weight"]
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vw = w[f"{att}value.weight"]
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rw = w[f"{att}receptance.weight"]
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ow = w[f"{att}output.weight"]
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if dd.stream:
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kw = kw.to(device=dev, non_blocking=True)
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vw = vw.to(device=dev, non_blocking=True)
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rw = rw.to(device=dev, non_blocking=True)
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ow = ow.to(device=dev, non_blocking=True)
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kmx = w[f"{att}key.weight_mx"] if wtype == torch.uint8 else x
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krx = w[f"{att}key.weight_rx"] if wtype == torch.uint8 else x
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kmy = w[f"{att}key.weight_my"] if wtype == torch.uint8 else x
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kry = w[f"{att}key.weight_ry"] if wtype == torch.uint8 else x
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vmx = w[f"{att}value.weight_mx"] if wtype == torch.uint8 else x
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vrx = w[f"{att}value.weight_rx"] if wtype == torch.uint8 else x
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vmy = w[f"{att}value.weight_my"] if wtype == torch.uint8 else x
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vry = w[f"{att}value.weight_ry"] if wtype == torch.uint8 else x
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rmx = w[f"{att}receptance.weight_mx"] if wtype == torch.uint8 else x
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rrx = w[f"{att}receptance.weight_rx"] if wtype == torch.uint8 else x
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rmy = w[f"{att}receptance.weight_my"] if wtype == torch.uint8 else x
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rry = w[f"{att}receptance.weight_ry"] if wtype == torch.uint8 else x
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omx = w[f"{att}output.weight_mx"] if wtype == torch.uint8 else x
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orx = w[f"{att}output.weight_rx"] if wtype == torch.uint8 else x
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omy = w[f"{att}output.weight_my"] if wtype == torch.uint8 else x
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ory = w[f"{att}output.weight_ry"] if wtype == torch.uint8 else x
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(
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x,
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state[i * 5 + 0],
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state[i * 5 + 1],
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state[i * 5 + 2],
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state[i * 5 + 3],
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) = ATT(
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x,
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state[i * 5 + 0],
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state[i * 5 + 1],
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state[i * 5 + 2],
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state[i * 5 + 3],
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w[f"{bbb}ln1.weight"],
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w[f"{bbb}ln1.bias"],
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w[f"{att}time_mix_k"],
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w[f"{att}time_mix_v"],
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w[f"{att}time_mix_r"],
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w[f"{att}time_decay"],
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w[f"{att}time_first"],
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kw,
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vw,
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rw,
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ow,
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kmx,
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krx,
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kmy,
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kry,
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vmx,
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vrx,
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vmy,
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vry,
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rmx,
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rrx,
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rmy,
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rry,
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omx,
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orx,
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omy,
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ory,
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)
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return state[0].tolist(), token_len
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def generate(
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self, prompt: str, stop: Union[str, List[str], None] = None
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) -> Iterable[Tuple[str, str, int, int]]:
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import numpy as np
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quick_log(None, None, "Generation Prompt:\n" + prompt)
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cache = None
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delta_prompt = prompt
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try:
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cache = state_cache.longest_prefix_state(
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state_cache.LongestPrefixStateBody(prompt=prompt), None
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)
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except HTTPException:
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pass
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if cache is None or cache["prompt"] == "" or cache["state"] is None:
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self.model_state = None
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self.model_tokens = []
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else:
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delta_prompt = prompt[len(cache["prompt"]) :]
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self.model_state = cache["state"]
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self.model_tokens = cache["tokens"]
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logits = cache["logits"]
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prompt_token_len = 0
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if delta_prompt != "":
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logits, prompt_token_len = self.run_rnn(
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self.fix_tokens(self.pipeline.encode(delta_prompt))
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)
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try:
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state_cache.add_state(
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state_cache.AddStateBody(
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prompt=prompt,
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tokens=self.model_tokens,
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state=self.model_state,
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logits=logits,
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)
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)
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except HTTPException:
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pass
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begin = len(self.model_tokens)
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out_last = begin
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occurrence: Dict = {}
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completion_token_len = 0
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response = ""
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for i in range(self.max_tokens_per_generation):
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self.adjust_forward_logits(logits, occurrence, i)
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token = self.pipeline.sample_logits(
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logits, temperature=self.temperature, top_p=self.top_p, top_k=self.top_k
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)
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if token == self.EOS_ID:
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yield response, "", prompt_token_len, completion_token_len
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break
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self.adjust_occurrence(occurrence, token)
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logits, _ = self.run_rnn([token])
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completion_token_len = completion_token_len + 1
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delta: str = self.delta_postprocess(
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self.pipeline.decode(self.model_tokens[out_last:])
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)
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if "\ufffd" not in delta: # avoid utf-8 display issues
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response += delta
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if stop is not None:
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if type(stop) == str:
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if stop in response:
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try:
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state_cache.add_state(
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state_cache.AddStateBody(
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prompt=prompt + response,
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tokens=self.model_tokens,
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state=self.model_state,
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logits=logits,
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)
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)
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except HTTPException:
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pass
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response = response.split(stop)[0]
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yield response, "", prompt_token_len, completion_token_len
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break
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elif type(stop) == list:
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stop_exist_regex = "|".join(stop)
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matched = re.search(stop_exist_regex, response)
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if matched:
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try:
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state_cache.add_state(
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state_cache.AddStateBody(
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prompt=prompt + response,
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tokens=self.model_tokens,
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state=self.model_state,
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logits=logits,
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)
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)
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except HTTPException:
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pass
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response = response.split(matched.group())[0]
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yield response, "", prompt_token_len, completion_token_len
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break
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out_last = begin + i + 1
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if i == self.max_tokens_per_generation - 1:
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try:
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state_cache.add_state(
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state_cache.AddStateBody(
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prompt=prompt + response,
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tokens=self.model_tokens,
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state=self.model_state,
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logits=logits,
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)
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)
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except HTTPException:
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pass
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yield response, delta, prompt_token_len, completion_token_len
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class TextRWKV(AbstractRWKV):
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def __init__(self, model, pipeline) -> None:
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super().__init__(model, pipeline)
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self.CHUNK_LEN = 256
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self.max_tokens_per_generation = 500
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self.temperature = 1
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self.top_p = 0.3
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self.top_k = 0
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self.penalty_alpha_presence = 0
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self.penalty_alpha_frequency = 1
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self.interface = ":"
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if self.tokenizer_len < 65536:
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self.rwkv_type = RWKVType.Raven
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self.user = "Bob"
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self.bot = "Alice"
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self.END_OF_LINE = 187
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else:
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self.rwkv_type = RWKVType.World
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self.user = "User"
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self.bot = "Assistant"
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self.END_OF_LINE = 11
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self.AVOID_REPEAT_TOKENS = []
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AVOID_REPEAT = "，：？！"
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for i in AVOID_REPEAT:
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dd = self.pipeline.encode(i)
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assert len(dd) == 1
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self.AVOID_REPEAT_TOKENS += dd
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self.__preload()
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def adjust_occurrence(self, occurrence: Dict, token: int):
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for xxx in occurrence:
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occurrence[xxx] *= 0.996
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if token not in occurrence:
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occurrence[token] = 1
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else:
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occurrence[token] += 1
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def adjust_forward_logits(self, logits: List[float], occurrence: Dict, i: int):
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for n in occurrence:
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logits[n] -= (
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self.penalty_alpha_presence
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+ occurrence[n] * self.penalty_alpha_frequency
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)
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if i == 0:
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for token in self.model_tokens:
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token = int(token)
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for xxx in occurrence:
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occurrence[xxx] *= 0.996
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if token not in occurrence:
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occurrence[token] = 1
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else:
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occurrence[token] += 1
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# Model only saw '\n\n' as [187, 187] before, but the tokenizer outputs [535] for it at the end
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def fix_tokens(self, tokens) -> List[int]:
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if self.rwkv_type == RWKVType.World:
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return tokens
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if len(tokens) > 0 and tokens[-1] == 535:
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tokens = tokens[:-1] + [self.END_OF_LINE, self.END_OF_LINE]
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return tokens
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def run_rnn(
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self, _tokens: List[str], newline_adj: int = 0
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) -> Tuple[List[float], int]:
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tokens = [int(x) for x in _tokens]
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token_len = len(tokens)
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self.model_tokens += tokens
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while len(tokens) > 0:
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out, self.model_state = self.model.forward(
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tokens[: self.CHUNK_LEN], self.model_state
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)
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tokens = tokens[self.CHUNK_LEN :]
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out[self.END_OF_LINE] += newline_adj # adjust \n probability
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if self.model_tokens[-1] in self.AVOID_REPEAT_TOKENS:
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out[self.model_tokens[-1]] = -999999999
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return out, token_len
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def delta_postprocess(self, delta: str) -> str:
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return delta
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def __preload(self):
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interface = self.interface
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user = self.user
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bot = self.bot
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preset_system = (
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f"""
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The following is a coherent verbose detailed conversation between a girl named {bot} and her friend {user}. \
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{bot} is very intelligent, creative and friendly. \
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{bot} is unlikely to disagree with {user}, and {bot} doesn't like to ask {user} questions. \
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{bot} likes to tell {user} a lot about herself and her opinions. \
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{bot} usually gives {user} kind, helpful and informative advices.\n
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"""
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if self.rwkv_type == RWKVType.Raven
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else (
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f"{user}{interface} hi\n\n{bot}{interface} Hi. "
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+ "I am your assistant and I will provide expert full response in full details. Please feel free to ask any question and I will always answer it.\n\n"
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)
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)
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logits, _ = self.run_rnn(self.fix_tokens(self.pipeline.encode(preset_system)))
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try:
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state_cache.add_state(
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state_cache.AddStateBody(
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prompt=preset_system,
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tokens=self.model_tokens,
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state=self.model_state,
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logits=logits,
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)
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)
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except HTTPException:
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pass
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class MusicMidiRWKV(AbstractRWKV):
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def __init__(self, model, pipeline):
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super().__init__(model, pipeline)
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self.max_tokens_per_generation = 500
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self.temperature = 1
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self.top_p = 0.8
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self.top_k = 8
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self.rwkv_type = RWKVType.Music
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def adjust_occurrence(self, occurrence: Dict, token: int):
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for n in occurrence:
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occurrence[n] *= 0.997 #### decay repetition penalty
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if token >= 128 or token == 127:
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occurrence[token] = 1 + (occurrence[token] if token in occurrence else 0)
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else:
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occurrence[token] = 0.3 + (occurrence[token] if token in occurrence else 0)
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def adjust_forward_logits(self, logits: List[float], occurrence: Dict, i: int):
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for n in occurrence:
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logits[n] -= 0 + occurrence[n] * 0.5
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logits[0] += (i - 2000) / 500 # try not to be too short or too long
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logits[127] -= 1 # avoid "t125"
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def fix_tokens(self, tokens) -> List[int]:
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return tokens
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def run_rnn(
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self, _tokens: List[str], newline_adj: int = 0
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) -> Tuple[List[float], int]:
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tokens = [int(x) for x in _tokens]
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token_len = len(tokens)
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self.model_tokens += tokens
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out, self.model_state = self.model.forward(tokens, self.model_state)
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return out, token_len
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def delta_postprocess(self, delta: str) -> str:
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return " " + delta
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class MusicAbcRWKV(AbstractRWKV):
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def __init__(self, model, pipeline):
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super().__init__(model, pipeline)
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self.EOS_ID = 3
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self.max_tokens_per_generation = 500
|
||
self.temperature = 1
|
||
self.top_p = 0.8
|
||
self.top_k = 8
|
||
|
||
self.rwkv_type = RWKVType.Music
|
||
|
||
def adjust_occurrence(self, occurrence: Dict, token: int):
|
||
pass
|
||
|
||
def adjust_forward_logits(self, logits: List[float], occurrence: Dict, i: int):
|
||
pass
|
||
|
||
def fix_tokens(self, tokens) -> List[int]:
|
||
return tokens
|
||
|
||
def run_rnn(
|
||
self, _tokens: List[str], newline_adj: int = 0
|
||
) -> Tuple[List[float], int]:
|
||
tokens = [int(x) for x in _tokens]
|
||
token_len = len(tokens)
|
||
self.model_tokens += tokens
|
||
out, self.model_state = self.model.forward(tokens, self.model_state)
|
||
return out, token_len
|
||
|
||
def delta_postprocess(self, delta: str) -> str:
|
||
return delta
|
||
|
||
|
||
def get_tokenizer(tokenizer_len: int):
|
||
tokenizer_dir = f"{pathlib.Path(__file__).parent.parent.resolve()}/rwkv_pip/"
|
||
if tokenizer_len < 20096:
|
||
return "abc_tokenizer"
|
||
if tokenizer_len < 50277:
|
||
return tokenizer_dir + "tokenizer-midi.json"
|
||
elif tokenizer_len < 65536:
|
||
return tokenizer_dir + "20B_tokenizer.json"
|
||
else:
|
||
return "rwkv_vocab_v20230424"
|
||
|
||
|
||
def RWKV(model: str, strategy: str, tokenizer: Union[str, None]) -> AbstractRWKV:
|
||
rwkv_beta = global_var.get(global_var.Args).rwkv_beta
|
||
rwkv_cpp = getattr(global_var.get(global_var.Args), "rwkv.cpp")
|
||
webgpu = global_var.get(global_var.Args).webgpu
|
||
|
||
if "midi" in model.lower() or "abc" in model.lower():
|
||
os.environ["RWKV_RESCALE_LAYER"] = "999"
|
||
|
||
# dynamic import to make RWKV_CUDA_ON work
|
||
if rwkv_beta:
|
||
print("Using rwkv-beta")
|
||
from rwkv_pip.beta.model import (
|
||
RWKV as Model,
|
||
)
|
||
elif rwkv_cpp:
|
||
print("Using rwkv.cpp, strategy is ignored")
|
||
from rwkv_pip.cpp.model import (
|
||
RWKV as Model,
|
||
)
|
||
elif webgpu:
|
||
print("Using webgpu")
|
||
from rwkv_pip.webgpu.model import (
|
||
RWKV as Model,
|
||
)
|
||
else:
|
||
from rwkv_pip.model import (
|
||
RWKV as Model,
|
||
)
|
||
from rwkv_pip.utils import PIPELINE
|
||
|
||
filename, _ = os.path.splitext(os.path.basename(model))
|
||
model = Model(model, strategy)
|
||
if not tokenizer:
|
||
tokenizer = get_tokenizer(len(model.w["emb.weight"]))
|
||
pipeline = PIPELINE(model, tokenizer)
|
||
|
||
rwkv_map: dict[str, Type[AbstractRWKV]] = {
|
||
"20B_tokenizer": TextRWKV,
|
||
"rwkv_vocab_v20230424": TextRWKV,
|
||
"tokenizer-midi": MusicMidiRWKV,
|
||
"abc_tokenizer": MusicAbcRWKV,
|
||
}
|
||
tokenizer_name = os.path.splitext(os.path.basename(tokenizer))[0]
|
||
rwkv: AbstractRWKV
|
||
if tokenizer_name in rwkv_map:
|
||
rwkv = rwkv_map[tokenizer_name](model, pipeline)
|
||
else:
|
||
rwkv = TextRWKV(model, pipeline)
|
||
rwkv.name = filename
|
||
|
||
return rwkv
|
||
|
||
|
||
class ModelConfigBody(BaseModel):
|
||
max_tokens: int = Field(default=None, gt=0, le=102400)
|
||
temperature: float = Field(default=None, ge=0, le=2)
|
||
top_p: float = Field(default=None, ge=0, le=1)
|
||
presence_penalty: float = Field(default=None, ge=-2, le=2)
|
||
frequency_penalty: float = Field(default=None, ge=-2, le=2)
|
||
|
||
model_config = {
|
||
"json_schema_extra": {
|
||
"example": {
|
||
"max_tokens": 1000,
|
||
"temperature": 1.2,
|
||
"top_p": 0.5,
|
||
"presence_penalty": 0.4,
|
||
"frequency_penalty": 0.4,
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
def set_rwkv_config(model: AbstractRWKV, body: ModelConfigBody):
|
||
if body.max_tokens is not None:
|
||
model.max_tokens_per_generation = body.max_tokens
|
||
if body.temperature is not None:
|
||
if body.temperature < 0.1:
|
||
model.temperature = 0.1
|
||
else:
|
||
model.temperature = body.temperature
|
||
if body.top_p is not None:
|
||
model.top_p = body.top_p
|
||
if body.presence_penalty is not None:
|
||
model.penalty_alpha_presence = body.presence_penalty
|
||
if body.frequency_penalty is not None:
|
||
model.penalty_alpha_frequency = body.frequency_penalty
|
||
|
||
|
||
def get_rwkv_config(model: AbstractRWKV) -> ModelConfigBody:
|
||
return ModelConfigBody(
|
||
max_tokens=model.max_tokens_per_generation,
|
||
temperature=model.temperature,
|
||
top_p=model.top_p,
|
||
presence_penalty=model.penalty_alpha_presence,
|
||
frequency_penalty=model.penalty_alpha_frequency,
|
||
)
|