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import os
import pathlib
import sys
import tempfile
import mpiunittest as unittest
from mpi4py import MPI
class TestErrhandler(unittest.TestCase):
#
def testPredefined(self):
self.assertFalse(MPI.ERRHANDLER_NULL)
self.assertTrue(MPI.ERRORS_ARE_FATAL)
self.assertTrue(MPI.ERRORS_RETURN)
if MPI.Get_version() >= (4, 0):
self.assertTrue(MPI.ERRORS_ABORT)
elif MPI.ERRORS_ABORT != MPI.ERRHANDLER_NULL:
self.assertTrue(MPI.ERRORS_ABORT)
else:
self.assertFalse(MPI.ERRORS_ABORT)
def testPickle(self):
from pickle import dumps, loads
for errhandler in [
MPI.ERRHANDLER_NULL,
MPI.ERRORS_ARE_FATAL,
MPI.ERRORS_RETURN,
MPI.ERRORS_ABORT,
]:
if not errhandler:
continue
errh = loads(dumps(errhandler))
self.assertIs(errh, errhandler)
errh = loads(dumps(MPI.Errhandler(errhandler)))
self.assertIsNot(errh, errhandler)
self.assertEqual(errh, errhandler)
class BaseTestErrhandler:
#
def testCreate(self):
MAX_USER_EH = 32 # max user-defined error handlers
mpiobj = self.mpiobj
index = None
called = check = False
def get_errhandler_fn(idx):
def errhandler_fn(arg, err):
nonlocal called, check
called = check = True
check &= arg == mpiobj
check &= err == MPI.ERR_OTHER
check &= idx == index
return errhandler_fn
def check_handle(eh):
cint = eh.toint()
if cint != -1:
clon = type(eh).fromint(cint)
self.assertEqual(eh, clon)
fint = eh.py2f()
if fint != -1:
clon = type(eh).f2py(fint)
self.assertEqual(eh, clon)
errhandlers = []
for index in range(MAX_USER_EH):
try:
fn = get_errhandler_fn(index)
eh = type(mpiobj).Create_errhandler(fn)
errhandlers.append(eh)
except NotImplementedError:
clsname = type(mpiobj).__name__.lower()
self.skipTest(f"mpi-{clsname}-create_errhandler")
with self.assertRaises(RuntimeError):
type(mpiobj).Create_errhandler(lambda _arg, _err: None)
for eh in errhandlers:
self.assertTrue(eh)
check_handle(eh)
with self.assertRaises(ValueError):
eh.__reduce__()
eh_orig = mpiobj.Get_errhandler()
try:
for i, eh in enumerate(errhandlers):
index = i
called = check = False
mpiobj.Set_errhandler(eh)
try:
mpiobj.Call_errhandler(MPI.SUCCESS)
mpiobj.Call_errhandler(MPI.ERR_OTHER)
except NotImplementedError:
if MPI.Get_version() >= (2, 0):
raise
else:
self.assertTrue(called)
self.assertTrue(check)
finally:
mpiobj.Set_errhandler(eh_orig)
finally:
for eh in errhandlers:
eh.Free()
def testCall(self):
mpiobj = self.mpiobj
mpiobj.Set_errhandler(MPI.ERRORS_RETURN)
try:
mpiobj.Call_errhandler(MPI.SUCCESS)
mpiobj.Call_errhandler(MPI.ERR_OTHER)
except NotImplementedError:
if MPI.Get_version() >= (2, 0):
raise
clsname = type(mpiobj).__name__.lower()
self.skipTest(f"mpi-{clsname}-call_errhandler")
def testGetFree(self):
mpiobj = self.mpiobj
errhdls = []
for _i in range(100):
e = mpiobj.Get_errhandler()
errhdls.append(e)
for e in errhdls:
e.Free()
for e in errhdls:
self.assertEqual(e, MPI.ERRHANDLER_NULL)
def _run_test_get_set(self, errhandler):
mpiobj = self.mpiobj
errhdl_1 = mpiobj.Get_errhandler()
self.assertNotEqual(errhdl_1, MPI.ERRHANDLER_NULL)
mpiobj.Set_errhandler(errhandler)
errhdl_2 = mpiobj.Get_errhandler()
self.assertEqual(errhdl_2, errhandler)
errhdl_2.Free()
self.assertEqual(errhdl_2, MPI.ERRHANDLER_NULL)
mpiobj.Set_errhandler(errhdl_1)
errhdl_1.Free()
self.assertEqual(errhdl_1, MPI.ERRHANDLER_NULL)
def testErrorsReturn(self):
self._run_test_get_set(MPI.ERRORS_RETURN)
def testErrorsFatal(self):
self._run_test_get_set(MPI.ERRORS_ARE_FATAL)
@unittest.skipUnless(MPI.ERRORS_ABORT, "mpi-errors-abort")
@unittest.skipMPI("mpich(<4.1.0)")
@unittest.skipMPI("openmpi(<5.0.0)")
@unittest.skipMPI("impi(<2021.14.0)")
def testErrorsAbort(self):
self._run_test_get_set(MPI.ERRORS_ABORT)
class TestErrhandlerComm(BaseTestErrhandler, unittest.TestCase):
#
def setUp(self):
self.mpiobj = MPI.COMM_SELF.Dup()
def tearDown(self):
self.mpiobj.Free()
@unittest.skipMPI("openmpi(<4.1.0)", sys.platform == "darwin")
class TestErrhandlerWin(BaseTestErrhandler, unittest.TestCase):
#
def setUp(self):
try:
self.mpiobj = MPI.Win.Create(
MPI.BOTTOM, 1, MPI.INFO_NULL, MPI.COMM_SELF
)
except NotImplementedError:
self.skipTest("mpi-win")
except MPI.Exception:
self.skipTest("mpi-win")
def tearDown(self):
self.mpiobj.Free()
def testCall(self):
super().testCall()
class TestErrhandlerFile(BaseTestErrhandler, unittest.TestCase):
#
def setUp(self):
rank = MPI.COMM_WORLD.Get_rank()
fd, filename = tempfile.mkstemp(prefix="mpi4py-", suffix=f"-{rank}")
os.close(fd)
amode = MPI.MODE_WRONLY | MPI.MODE_CREATE | MPI.MODE_DELETE_ON_CLOSE
try:
self.mpiobj = MPI.File.Open(
MPI.COMM_SELF, filename, amode, MPI.INFO_NULL
)
except NotImplementedError:
try:
pathlib.Path(filename).unlink()
except OSError:
pass
self.skipTest("mpi-file")
def tearDown(self):
self.mpiobj.Close()
@unittest.skipMPI("msmpi")
def testCall(self):
super().testCall()
class TestErrhandlerSession(BaseTestErrhandler, unittest.TestCase):
#
def setUp(self):
try:
self.mpiobj = MPI.Session.Init()
except NotImplementedError:
self.skipTest("mpi-session")
def tearDown(self):
self.mpiobj.Finalize()
if __name__ == "__main__":
unittest.main()
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