fix

Signed-off-by: Qidong Su <soodoshll@gmail.com>

Author: soodoshll

examples/hopper_matmul/matmul_v2.py

@@ -73,7 +73,7 @@ def __call__(
         for iter in range(num_iters):
             stage = iter % self.num_stages
             self.mbarrier.wait(tma_barriers[stage], phase=phase[stage])
-            # self.sync()
+            self.sync()
 
             self.wgmma.fence()
             self.wgmma.mma(sa[stage], sb[stage].transpose(), acc)