Set csgmv as default lora backend. (#11488)

test/srt/lora/utils.py

@@ -14,7 +14,7 @@
 
 import dataclasses
 import random
-from typing import List
+from typing import List, Optional
 
 import torch
 
@@ -50,7 +50,7 @@ class LoRAModelCase:
 
 
 TORCH_DTYPES = [torch.float16]
-BACKENDS = ["triton"]
+BACKENDS = ["triton", "csgmv"]
 DEFAULT_PROMPTS = [
     "AI is a field of computer science focused on",
     """
@@ -135,7 +135,7 @@ def run_lora_test_one_by_one(
     model_case: LoRAModelCase,
     torch_dtype: torch.dtype,
     max_new_tokens: int,
-    backend: str,
+    backend: str = "csgmv",
     disable_cuda_graph: bool = False,
     disable_radix_cache: bool = False,
     mem_fraction_static: float = 0.88,