change to qwen2 7b

app.py

@@ -1,16 +1,16 @@
 import gradio as gr
 from llama_cpp import Llama
 
-model = "bartowski/Phi-3.1-mini-4k-instruct-GGUF"
+model = "Qwen/Qwen2-7B-Instruct-GGUF"
 llm = Llama.from_pretrained(
     repo_id=model,
-    filename="Phi-3.1-mini-4k-instruct-Q4_K_L.gguf",
+    filename="qwen2-7b-instruct-q4_k_m.gguf",
     verbose=True,
     use_mmap=False,
     use_mlock=True,
     n_threads=2,
     n_threads_batch=2,
-    n_ctx=4000,
+    n_ctx=2000,
 )