[Fix] Sorts aclgraph batch sizes in ascending order (#4230)

### What this PR does / why we need it?
Sorts aclgraph batch sizes in ascending order, corresponding to vLLM
[#26016](vllm-project/vllm#26016)

Ensures batch sizes for aclgraph are sorted ascending when aclgraph mode
is enabled, improving consistency and compatibility with later logic
that may depend on order.

### Does this PR introduce _any_ user-facing change?
None.

### How was this patch tested?
Waiting for #3886 

- vLLM version: v0.11.0
- vLLM main:
vllm-project/vllm@2918c1b

Signed-off-by: Yizhou Liu <[email protected]>

Author: yiz-liu

vllm_ascend/worker/model_runner_v1.py

@@ -521,8 +521,12 @@ def __init__(self, vllm_config: VllmConfig, device: torch.device):
             if self.speculative_config else 0)
 
         self.use_aclgraph = self._use_aclgraph()
-        self.aclgraph_batch_sizes = list(
-            reversed(self.compilation_config.cudagraph_capture_sizes))
+
+        # self.aclgraph_batch_sizes sorts in ascending order.
+        if (self.compilation_config.cudagraph_capture_sizes and
+                self.compilation_config.cudagraph_mode != CUDAGraphMode.NONE):
+            self.aclgraph_batch_sizes = sorted(
+                self.compilation_config.cudagraph_capture_sizes)
 
         self.uniform_decode_query_len = 1 if not self.speculative_config else \
             1 + self.speculative_config.num_speculative_tokens
@@ -4101,7 +4105,8 @@ def _capture_model(self):
             if aclgraph_mode.mixed_mode() != CUDAGraphMode.NONE:
                 aclgraph_runtime_mode = aclgraph_mode.mixed_mode()
 
-                compilation_cases = sorted(self.aclgraph_batch_sizes)
+                # make sure we capture the largest batch size first
+                compilation_cases = list(reversed(self.aclgraph_batch_sizes))
 
                 try:
                     self._capture_aclgraphs(