[Fix] Adjust use_aclgraph logic (#2156)

### What this PR does / why we need it?
Updates the FusedMoE method to determine whether to use ACL Graph based
on the `torchair_graph_config`

This is equivalent to #2154 on v0.9.1-dev.

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

### How was this patch tested?
None needed.

- vLLM version: v0.10.0
- vLLM main:
vllm-project/vllm@ad57f23

Signed-off-by: Yizhou Liu <liu_yizhou@outlook.com>

Author: yiz-liu

vllm_ascend/ops/common_fused_moe.py

@@ -22,6 +22,7 @@
 from vllm.model_executor.layers.fused_moe.layer import \
     UnquantizedFusedMoEMethod
 
+from vllm_ascend.ascend_config import get_ascend_config
 from vllm_ascend.ops.fused_moe import (fused_experts, fused_experts_moge,
                                        select_experts)
 from vllm_ascend.utils import is_310p
@@ -33,7 +34,15 @@ def unquantized_fused_moe_init_func(self, *args, **kwargs):
     original_unquantized_fused_moe_init_func(self, *args, **kwargs)
     vllm_config = get_current_vllm_config()
     self.max_num_batched_tokens = vllm_config.scheduler_config.max_num_batched_tokens
-    self.use_aclgraph = vllm_config.compilation_config.level == CompilationLevel.PIECEWISE and not vllm_config.model_config.enforce_eager
+
+    ascend_config = get_ascend_config()
+
+    if ascend_config.torchair_graph_config.enabled:
+        self.use_aclgraph = False
+    else:
+        self.use_aclgraph = (vllm_config.compilation_config.level
+                             == CompilationLevel.PIECEWISE
+                             and not vllm_config.model_config.enforce_eager)
 
 
 def forward_oot(

vllm_ascend/ops/fused_moe.py

@@ -1105,7 +1105,7 @@ def apply(
         # this is a naive implementation for experts load balance so as
         # to avoid accumulating too much tokens on a single rank.
         # currently it is only activated when doing profile runs.
-        if enable_force_load_balance:
+        if enable_force_load_balance and not self.use_aclgraph:
             topk_ids = torch.randint_like(topk_ids, 0, global_num_experts)
 
         fused_moe_state = get_forward_context().fused_moe_state