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from mpi4py import MPI
import mpiunittest as unittest
from functools import reduce
cumsum = lambda seq: reduce(lambda x, y: x+y, seq, 0)
cumprod = lambda seq: reduce(lambda x, y: x*y, seq, 1)
_basic = [
None,
True, False,
-7, 0, 7, 2**31,
-2**63+1, 2**63-1,
-2.17, 0.0, 3.14,
1+2j, 2-3j,
'mpi4py',
]
messages = list(_basic)
messages += [
list(_basic),
tuple(_basic),
{f'k{k}': v for k, v in enumerate(_basic)},
]
@unittest.skipMPI('openmpi(<1.6.0)')
@unittest.skipMPI('msmpi', MPI.COMM_WORLD.Get_size() >= 3)
@unittest.skipMPI('MPICH1')
@unittest.skipIf(MPI.ROOT == MPI.PROC_NULL, 'mpi-root')
@unittest.skipIf(MPI.COMM_WORLD.Get_size() < 2, 'mpi-world-size<2')
class BaseTestCCOObjInter:
BASECOMM = MPI.COMM_NULL
INTRACOMM = MPI.COMM_NULL
INTERCOMM = MPI.COMM_NULL
def setUp(self):
size = self.BASECOMM.Get_size()
rank = self.BASECOMM.Get_rank()
if rank < size // 2:
self.COLOR = 0
self.LOCAL_LEADER = 0
self.REMOTE_LEADER = size // 2
else:
self.COLOR = 1
self.LOCAL_LEADER = 0
self.REMOTE_LEADER = 0
self.INTRACOMM = self.BASECOMM.Split(self.COLOR, key=0)
Create_intercomm = MPI.Intracomm.Create_intercomm
self.INTERCOMM = Create_intercomm(self.INTRACOMM,
self.LOCAL_LEADER,
self.BASECOMM,
self.REMOTE_LEADER)
def tearDown(self):
self.INTRACOMM.Free()
self.INTERCOMM.Free()
@unittest.skipMPI('MPICH2(<1.0.8)')
def testBarrier(self):
self.INTERCOMM.barrier()
def testBcast(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for smess in messages + [messages]:
for color in [0, 1]:
if self.COLOR == color:
for root in range(size):
if root == rank:
rmess = self.INTERCOMM.bcast(smess, root=MPI.ROOT)
else:
rmess = self.INTERCOMM.bcast(None, root=MPI.PROC_NULL)
self.assertIsNone(rmess)
else:
for root in range(rsize):
rmess = self.INTERCOMM.bcast(None, root=root)
self.assertEqual(rmess, smess)
def testGather(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for smess in messages + [messages]:
for color in [0, 1]:
if self.COLOR == color:
for root in range(size):
if root == rank:
rmess = self.INTERCOMM.gather(smess, root=MPI.ROOT)
self.assertEqual(rmess, [smess] * rsize)
else:
rmess = self.INTERCOMM.gather(None, root=MPI.PROC_NULL)
self.assertIsNone(rmess)
else:
for root in range(rsize):
rmess = self.INTERCOMM.gather(smess, root=root)
self.assertIsNone(rmess)
@unittest.skipMPI('msmpi(<8.0.0)')
def testScatter(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for smess in messages + [messages]:
for color in [0, 1]:
if self.COLOR == color:
for root in range(size):
if root == rank:
rmess = self.INTERCOMM.scatter([smess] * rsize, root=MPI.ROOT)
else:
rmess = self.INTERCOMM.scatter(None, root=MPI.PROC_NULL)
self.assertIsNone(rmess)
else:
for root in range(rsize):
rmess = self.INTERCOMM.scatter(None, root=root)
self.assertEqual(rmess, smess)
@unittest.skipMPI('MPICH2(<1.0.8)')
def testAllgather(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for smess in messages + [messages]:
rmess = self.INTERCOMM.allgather(smess)
self.assertEqual(rmess, [smess] * rsize)
def testAlltoall(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for smess in messages + [messages]:
rmess = self.INTERCOMM.alltoall([smess] * rsize)
self.assertEqual(rmess, [smess] * rsize)
def testReduce(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for op in (MPI.SUM, MPI.MAX, MPI.MIN, MPI.PROD):
for color in [0, 1]:
if self.COLOR == color:
for root in range(size):
if root == rank:
value = self.INTERCOMM.reduce(None, op=op, root=MPI.ROOT)
if op == MPI.SUM:
self.assertEqual(value, cumsum(range(rsize)))
elif op == MPI.PROD:
self.assertEqual(value, cumprod(range(rsize)))
elif op == MPI.MAX:
self.assertEqual(value, rsize-1)
elif op == MPI.MIN:
self.assertEqual(value, 0)
else:
value = self.INTERCOMM.reduce(None, op=op, root=MPI.PROC_NULL)
self.assertIsNone(value)
else:
for root in range(rsize):
value = self.INTERCOMM.reduce(rank, op=op, root=root)
self.assertIsNone(value)
badroots = {-3, -2, -1, rsize}.difference({MPI.ROOT, MPI.PROC_NULL})
for root in badroots:
with self.assertRaises(MPI.Exception) as cm:
self.INTERCOMM.reduce(None, op=MPI.NO_OP, root=root)
ierr = cm.exception.Get_error_class()
self.assertEqual(ierr, MPI.ERR_ROOT)
@unittest.skipMPI('MPICH2(<1.0.8)')
def testAllreduce(self):
rank = self.INTERCOMM.Get_rank()
size = self.INTERCOMM.Get_size()
rsize = self.INTERCOMM.Get_remote_size()
for op in (MPI.SUM, MPI.MAX, MPI.MIN, MPI.PROD):
value = self.INTERCOMM.allreduce(rank, op)
if op == MPI.SUM:
self.assertEqual(value, cumsum(range(rsize)))
elif op == MPI.PROD:
self.assertEqual(value, cumprod(range(rsize)))
elif op == MPI.MAX:
self.assertEqual(value, rsize-1)
elif op == MPI.MIN:
self.assertEqual(value, 0)
class TestCCOObjInter(BaseTestCCOObjInter, unittest.TestCase):
BASECOMM = MPI.COMM_WORLD
class TestCCOObjInterDup(TestCCOObjInter):
def setUp(self):
self.BASECOMM = self.BASECOMM.Dup()
super().setUp()
def tearDown(self):
self.BASECOMM.Free()
super().tearDown()
class TestCCOObjInterDupDup(TestCCOObjInterDup):
BASECOMM = MPI.COMM_WORLD
INTERCOMM_ORIG = MPI.COMM_NULL
def setUp(self):
super().setUp()
self.INTERCOMM_ORIG = self.INTERCOMM
self.INTERCOMM = self.INTERCOMM.Dup()
def tearDown(self):
super().tearDown()
self.INTERCOMM_ORIG.Free()
if __name__ == '__main__':
unittest.main()
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