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import arrayimpl
import mpiunittest as unittest
from mpi4py import MPI
def skip_op(typecode, op):
if typecode == "?":
return True
if typecode in "FDG":
if op in (MPI.MAX, MPI.MIN):
return True
return False
def maxvalue(a):
try:
typecode = a.typecode
except AttributeError:
typecode = a.dtype.char
if typecode == ("f"):
return 1e30
elif typecode == ("d"):
return 1e300
else:
return 2 ** (a.itemsize * 7) - 1
@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 BaseTestCCOBufInter:
#
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()
def testBarrier(self):
self.INTERCOMM.Barrier()
def testBcast(self):
comm = self.INTERCOMM
rank = comm.Get_rank()
size = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for color in (0, 1):
if self.COLOR == color:
for root in range(size):
if root == rank:
buf = array(root, typecode, root + color)
comm.Bcast(buf.as_mpi(), root=MPI.ROOT)
else:
comm.Bcast(None, root=MPI.PROC_NULL)
else:
for root in range(rsize):
buf = array(-1, typecode, root + color)
comm.Bcast(buf.as_mpi(), root=root)
check = arrayimpl.scalar(root)
for value in buf:
self.assertEqual(value, check)
def testGather(self):
comm = self.INTERCOMM
rank = comm.Get_rank()
size = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for color in (0, 1):
if self.COLOR == color:
for root in range(size):
if root == rank:
rbuf = array(-1, typecode, (rsize, root + color))
comm.Gather(None, rbuf.as_mpi(), root=MPI.ROOT)
check = arrayimpl.scalar(root)
for value in rbuf.flat:
self.assertEqual(value, check)
else:
comm.Gather(None, None, root=MPI.PROC_NULL)
else:
for root in range(rsize):
sbuf = array(root, typecode, root + color)
comm.Gather(sbuf.as_mpi(), None, root=root)
def testScatter(self):
comm = self.INTERCOMM
rank = comm.Get_rank()
size = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for color in (0, 1):
if self.COLOR == color:
for root in range(size):
if root == rank:
sbuf = array(root, typecode, (rsize, root + color))
comm.Scatter(sbuf.as_mpi(), None, root=MPI.ROOT)
else:
comm.Scatter(None, None, root=MPI.PROC_NULL)
else:
for root in range(rsize):
rbuf = array(root, typecode, root + color)
comm.Scatter(None, rbuf.as_mpi(), root=root)
check = arrayimpl.scalar(root)
for value in rbuf:
self.assertEqual(value, check)
def testAllgather(self):
comm = self.INTERCOMM
comm.Get_rank()
size = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for color in (0, 1):
if self.COLOR == color:
for n in range(size):
sbuf = array(n, typecode, color)
rbuf = array(-1, typecode, (rsize, n + color))
comm.Allgather(sbuf.as_mpi(), rbuf.as_mpi())
check = arrayimpl.scalar(n)
for value in rbuf.flat:
self.assertEqual(value, check)
else:
for n in range(rsize):
sbuf = array(n, typecode, n + color)
rbuf = array(-1, typecode, (rsize, color))
comm.Allgather(sbuf.as_mpi(), rbuf.as_mpi())
check = arrayimpl.scalar(n)
for value in rbuf.flat:
self.assertEqual(value, check)
def testAlltoall(self):
comm = self.INTERCOMM
comm.Get_rank()
size = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for color in (0, 1):
if self.COLOR == color:
for n in range(size):
sbuf = array(n, typecode, (rsize, (n + 1) * color))
rbuf = array(-1, typecode, (rsize, n + 3 * color))
comm.Alltoall(sbuf.as_mpi(), rbuf.as_mpi())
check = arrayimpl.scalar(n)
for value in rbuf.flat:
self.assertEqual(value, check)
else:
for n in range(rsize):
sbuf = array(n, typecode, (rsize, n + 3 * color))
rbuf = array(-1, typecode, (rsize, (n + 1) * color))
comm.Alltoall(sbuf.as_mpi(), rbuf.as_mpi())
check = arrayimpl.scalar(n)
for value in rbuf.flat:
self.assertEqual(value, check)
@unittest.skipMPI("mvapich", MPI.COMM_WORLD.Get_size() > 2)
def testReduce(self):
comm = self.INTERCOMM
rank = comm.Get_rank()
lsize = comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for op in (MPI.SUM, MPI.PROD, MPI.MAX, MPI.MIN):
if skip_op(typecode, op):
continue
for color in (0, 1):
if self.COLOR == color:
for root in range(lsize):
if root == rank:
rbuf = array(-1, typecode, rsize)
comm.Reduce(
None,
rbuf.as_mpi(),
op=op,
root=MPI.ROOT,
)
max_val = maxvalue(rbuf)
for i, value in enumerate(rbuf):
if op == MPI.SUM:
if (i * rsize) < max_val:
self.assertAlmostEqual(
value, i * rsize
)
elif op == MPI.PROD:
if (i**rsize) < max_val:
self.assertAlmostEqual(
value, i**rsize
)
elif op == MPI.MAX:
self.assertEqual(value, i)
elif op == MPI.MIN:
self.assertEqual(value, i)
else:
comm.Reduce(
None,
None,
op=op,
root=MPI.PROC_NULL,
)
else:
for root in range(rsize):
sbuf = array(range(lsize), typecode)
comm.Reduce(
sbuf.as_mpi(),
None,
op=op,
root=root,
)
def testAllreduce(self):
comm = self.INTERCOMM
comm.Get_rank()
comm.Get_size()
rsize = comm.Get_remote_size()
for array, typecode in arrayimpl.loop():
for op in (MPI.SUM, MPI.PROD, MPI.MAX, MPI.MIN):
if skip_op(typecode, op):
continue
sbuf = array(range(5), typecode)
rbuf = array([-1] * 5, typecode)
comm.Allreduce(sbuf.as_mpi(), rbuf.as_mpi(), op)
max_val = maxvalue(rbuf)
for i, value in enumerate(rbuf):
if op == MPI.SUM:
if (i * rsize) < max_val:
self.assertAlmostEqual(value, i * rsize)
elif op == MPI.PROD:
if (i**rsize) < max_val:
self.assertAlmostEqual(value, i**rsize)
elif op == MPI.MAX:
self.assertEqual(value, i)
elif op == MPI.MIN:
self.assertEqual(value, i)
class TestCCOBufInter(BaseTestCCOBufInter, unittest.TestCase):
#
BASECOMM = MPI.COMM_WORLD
class TestCCOBufInterDup(TestCCOBufInter):
#
def setUp(self):
self.BASECOMM = self.BASECOMM.Dup()
super().setUp()
def tearDown(self):
self.BASECOMM.Free()
super().tearDown()
if __name__ == "__main__":
unittest.main()
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