Duplicate from stabilityai/stablelm-tuned-alpha-chat

Co-authored-by: reshinth.adith <reshinthadith@users.noreply.huggingface.co>

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README.md

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+---
+title: Stablelm Tuned Alpha Chat
+emoji: 👀
+colorFrom: purple
+colorTo: pink
+sdk: gradio
+sdk_version: 3.27.0
+app_file: app.py
+pinned: false
+duplicated_from: stabilityai/stablelm-tuned-alpha-chat
+---
+
+Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference

app.py

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+import gradio as gr
+import torch
+from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline, StoppingCriteria, StoppingCriteriaList, TextIteratorStreamer
+import time
+import numpy as np
+from torch.nn import functional as F
+import os
+from threading import Thread
+
+print(f"Starting to load the model to memory")
+m = AutoModelForCausalLM.from_pretrained(
+    "stabilityai/stablelm-tuned-alpha-7b", torch_dtype=torch.float16).cuda()
+tok = AutoTokenizer.from_pretrained("stabilityai/stablelm-tuned-alpha-7b")
+generator = pipeline('text-generation', model=m, tokenizer=tok, device=0)
+print(f"Sucessfully loaded the model to the memory")
+
+start_message = """<|SYSTEM|># StableAssistant
+- StableAssistant is A helpful and harmless Open Source AI Language Model developed by Stability and CarperAI.
+- StableAssistant is excited to be able to help the user, but will refuse to do anything that could be considered harmful to the user.
+- StableAssistant is more than just an information source, StableAssistant is also able to write poetry, short stories, and make jokes.
+- StableAssistant will refuse to participate in anything that could harm a human."""
+
+
+class StopOnTokens(StoppingCriteria):
+    def __call__(self, input_ids: torch.LongTensor, scores: torch.FloatTensor, **kwargs) -> bool:
+        stop_ids = [50278, 50279, 50277, 1, 0]
+        for stop_id in stop_ids:
+            if input_ids[0][-1] == stop_id:
+                return True
+        return False
+
+
+def user(message, history):
+    # Append the user's message to the conversation history
+    return "", history + [[message, ""]]
+
+
+def chat(curr_system_message, history):
+    # Initialize a StopOnTokens object
+    stop = StopOnTokens()
+
+    # Construct the input message string for the model by concatenating the current system message and conversation history
+    messages = curr_system_message + \
+        "".join(["".join(["<|USER|>"+item[0], "<|ASSISTANT|>"+item[1]])
+                for item in history])
+
+    # Tokenize the messages string
+    model_inputs = tok([messages], return_tensors="pt").to("cuda")
+    streamer = TextIteratorStreamer(
+        tok, timeout=10., skip_prompt=True, skip_special_tokens=True)
+    generate_kwargs = dict(
+        model_inputs,
+        streamer=streamer,
+        max_new_tokens=1024,
+        do_sample=True,
+        top_p=0.95,
+        top_k=1000,
+        temperature=1.0,
+        num_beams=1,
+        stopping_criteria=StoppingCriteriaList([stop])
+    )
+    t = Thread(target=m.generate, kwargs=generate_kwargs)
+    t.start()
+
+    # print(history)
+    # Initialize an empty string to store the generated text
+    partial_text = ""
+    for new_text in streamer:
+        # print(new_text)
+        partial_text += new_text
+        history[-1][1] = partial_text
+        # Yield an empty string to cleanup the message textbox and the updated conversation history
+        yield history
+    return partial_text
+
+
+with gr.Blocks() as demo:
+    # history = gr.State([])
+    gr.Markdown("## StableLM-Tuned-Alpha-7b Chat")
+    gr.HTML('''<center><a href="https://huggingface.co/spaces/stabilityai/stablelm-tuned-alpha-chat?duplicate=true"><img src="https://bit.ly/3gLdBN6" alt="Duplicate Space"></a>Duplicate the Space to skip the queue and run in a private space</center>''')
+    chatbot = gr.Chatbot().style(height=500)
+    with gr.Row():
+        with gr.Column():
+            msg = gr.Textbox(label="Chat Message Box", placeholder="Chat Message Box",
+                             show_label=False).style(container=False)
+        with gr.Column():
+            with gr.Row():
+                submit = gr.Button("Submit")
+                stop = gr.Button("Stop")
+                clear = gr.Button("Clear")
+    system_msg = gr.Textbox(
+        start_message, label="System Message", interactive=False, visible=False)
+
+    submit_event = msg.submit(fn=user, inputs=[msg, chatbot], outputs=[msg, chatbot], queue=False).then(
+        fn=chat, inputs=[system_msg, chatbot], outputs=[chatbot], queue=True)
+    submit_click_event = submit.click(fn=user, inputs=[msg, chatbot], outputs=[msg, chatbot], queue=False).then(
+        fn=chat, inputs=[system_msg, chatbot], outputs=[chatbot], queue=True)
+    stop.click(fn=None, inputs=None, outputs=None, cancels=[
+               submit_event, submit_click_event], queue=False)
+    clear.click(lambda: None, None, [chatbot], queue=False)
+
+demo.queue(max_size=32, concurrency_count=2)
+demo.launch()

requirements.txt

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+gradio
+torch
+transformers
+numpy