fix eig backward failedrandomly (#58236)

Courtesy-Xs · web-flow · commit a0f82e52c692 · 2023-10-20T15:18:48.000+08:00
diff --git a/test/legacy_test/test_eig_op.py b/test/legacy_test/test_eig_op.py
@@ -320,6 +320,7 @@ def test_check_grad(self):
         test_type = 'float64'
         paddle.set_device("cpu")
 
+        np.random.seed(1024)
         input_np = np.random.random(test_shape).astype(test_type)
         real_w, real_v = np.linalg.eig(input_np)
 
