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from mpi4py import MPI
import mpiunittest as unittest
try:
_reduce = reduce
except NameError:
from functools import reduce as _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, 2**63-1,
-2.17, 0.0, 3.14,
1+2j, 2-3j,
'mpi4py',
]
messages = _basic
messages += [ list(_basic),
tuple(_basic),
dict([('k%d' % key, val)
for key, val in enumerate(_basic)])
]
class BaseTestCCOObj(object):
COMM = MPI.COMM_NULL
def testBarrier(self):
self.COMM.barrier()
def testBcast(self):
for smess in messages:
for root in range(self.COMM.Get_size()):
rmess = self.COMM.bcast(smess, root=root)
self.assertEqual(smess, rmess)
def testGather(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for smess in messages + [messages]:
for root in range(size):
rmess = self.COMM.gather(smess, root=root)
if rank == root:
self.assertEqual(rmess, [smess] * size)
else:
self.assertEqual(rmess, None)
def testScatter(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for smess in messages + [messages]:
for root in range(size):
if rank == root:
rmess = self.COMM.scatter([smess] * size, root=root)
else:
rmess = self.COMM.scatter(None, root=root)
self.assertEqual(rmess, smess)
def testAllgather(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for smess in messages + [messages]:
rmess = self.COMM.allgather(smess, None)
self.assertEqual(rmess, [smess] * size)
def testAlltoall(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for smess in messages + [messages]:
rmess = self.COMM.alltoall([smess] * size, None)
self.assertEqual(rmess, [smess] * size)
def testReduce(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for root in range(size):
for op in (MPI.SUM, MPI.PROD,
MPI.MAX, MPI.MIN,
MPI.MAXLOC, MPI.MINLOC):
value = self.COMM.reduce(rank, None, op=op, root=root)
if rank != root:
self.assertTrue(value is None)
else:
if op == MPI.SUM:
self.assertEqual(value, cumsum(range(size)))
elif op == MPI.PROD:
self.assertEqual(value, cumprod(range(size)))
elif op == MPI.MAX:
self.assertEqual(value, size-1)
elif op == MPI.MIN:
self.assertEqual(value, 0)
elif op == MPI.MAXLOC:
self.assertEqual(value[1], size-1)
elif op == MPI.MINLOC:
self.assertEqual(value[1], 0)
def testAllreduce(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
for op in (MPI.SUM, MPI.PROD,
MPI.MAX, MPI.MIN,
MPI.MAXLOC, MPI.MINLOC):
value = self.COMM.allreduce(rank, None, op)
if op == MPI.SUM:
self.assertEqual(value, cumsum(range(size)))
elif op == MPI.PROD:
self.assertEqual(value, cumprod(range(size)))
elif op == MPI.MAX:
self.assertEqual(value, size-1)
elif op == MPI.MIN:
self.assertEqual(value, 0)
elif op == MPI.MAXLOC:
self.assertEqual(value[1], size-1)
elif op == MPI.MINLOC:
self.assertEqual(value[1], 0)
def testScan(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
# --
sscan = self.COMM.scan(size, op=MPI.SUM)
self.assertEqual(sscan, cumsum([size]*(rank+1)))
# --
rscan = self.COMM.scan(rank, op=MPI.SUM)
self.assertEqual(rscan, cumsum(range(rank+1)))
# --
minloc = self.COMM.scan(rank, op=MPI.MINLOC)
maxloc = self.COMM.scan(rank, op=MPI.MAXLOC)
self.assertEqual(minloc, (0, 0))
self.assertEqual(maxloc, (rank, rank))
def testExscan(self):
size = self.COMM.Get_size()
rank = self.COMM.Get_rank()
# --
sscan = self.COMM.exscan(size, op=MPI.SUM)
if rank == 0:
self.assertTrue(sscan is None)
else:
self.assertEqual(sscan, cumsum([size]*(rank)))
# --
rscan = self.COMM.exscan(rank, op=MPI.SUM)
if rank == 0:
self.assertTrue(rscan is None)
else:
self.assertEqual(rscan, cumsum(range(rank)))
#
minloc = self.COMM.exscan(rank, op=MPI.MINLOC)
maxloc = self.COMM.exscan(rank, op=MPI.MAXLOC)
if rank == 0:
self.assertEqual(minloc, None)
self.assertEqual(maxloc, None)
else:
self.assertEqual(minloc, (0, 0))
self.assertEqual(maxloc, (rank-1, rank-1))
class BaseTestCCOObjDup(BaseTestCCOObj):
def setUp(self):
self.COMM = self.COMM.Dup()
def tearDown(self):
self.COMM.Free()
del self.COMM
class TestCCOObjSelf(BaseTestCCOObj, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestCCOObjWorld(BaseTestCCOObj, unittest.TestCase):
COMM = MPI.COMM_WORLD
class TestCCOObjSelfDup(BaseTestCCOObjDup, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestCCOObjWorldDup(BaseTestCCOObjDup, unittest.TestCase):
COMM = MPI.COMM_WORLD
_name, _version = MPI.get_vendor()
if _name == 'Open MPI':
if _version < (1, 4, 0):
if MPI.Query_thread() > MPI.THREAD_SINGLE:
del TestCCOObjWorldDup
if __name__ == '__main__':
unittest.main()
|
