Attempt to catch unit test failures more reliably

pshmem/shmem.py

@@ -212,7 +212,21 @@ def __init__(self, shape, dtype, comm, comm_node=None, comm_node_rank=None):
                         print(msg, flush=True)
                         raise
 
-                # Wait for other processes to attach
+                # Create a numpy array which acts as a view of the buffer.
+                self._flat = np.ndarray(
+                    self._n,
+                    dtype=self._dtype,
+                    buffer=self._shmem,
+                )
+
+                # Initialize to zero.
+                if self._noderank == 0:
+                    self._flat[:] = 0
+
+                # Wrap
+                self.data = self._flat.reshape(self._shape)
+
+                # Wait for other processes to attach and wrap
                 if self._nodecomm is not None:
                     self._nodecomm.barrier()
 
@@ -229,19 +243,6 @@ def __init__(self, shape, dtype, comm, comm_node=None, comm_node_rank=None):
                         print(msg, flush=True)
                         raise
 
-                # Create a numpy array which acts as a view of the buffer.
-                self._flat = np.ndarray(
-                    self._n,
-                    dtype=self._dtype,
-                    buffer=self._shmem,
-                )
-                # Initialize to zero.
-                if self._noderank == 0:
-                    self._flat[:] = 0
-
-                # Wrap
-                self.data = self._flat.reshape(self._shape)
-
     def __del__(self):
         self.close()
 

pshmem/test.py

@@ -467,9 +467,25 @@ def test_lock(self):
 
 
 def run():
+    comm = None
+    if MPI is not None:
+        comm = MPI.COMM_WORLD
+
     suite = unittest.TestSuite()
     suite.addTest(unittest.makeSuite(LockTest))
     suite.addTest(unittest.makeSuite(ShmemTest))
     runner = unittest.TextTestRunner()
-    runner.run(suite)
+
+    ret = 0
+    _ret = runner.run(suite)
+    if not _ret.wasSuccessful():
+        ret += 1
+
+    if comm is not None:
+        ret = comm.allreduce(ret, op=MPI.SUM)
+
+    if ret > 0:
+        print(f"{ret} Processes had failures")
+        sys.exit(6)
+
     return