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from mpi4py import MPI
import mpiunittest as unittest
import os
try:
import socket
except ImportError:
socket = None
def github():
return os.environ.get('GITHUB_ACTIONS') == 'true'
def ch4_ucx():
return 'ch4:ucx' in MPI.Get_library_version()
def ch4_ofi():
return 'ch4:ofi' in MPI.Get_library_version()
def appnum():
if MPI.APPNUM == MPI.KEYVAL_INVALID: return None
return MPI.COMM_WORLD.Get_attr(MPI.APPNUM)
def badport():
if MPI.get_vendor()[0] != 'MPICH':
return False
try:
port = MPI.Open_port()
MPI.Close_port(port)
except:
port = ""
return port == ""
@unittest.skipMPI('mpich(<4.3.0)', badport())
@unittest.skipMPI('openmpi(<2.0.0)')
@unittest.skipMPI('openmpi(>=5.0.0,<5.0.4)')
@unittest.skipMPI('msmpi(<8.1.0)')
@unittest.skipMPI('mvapich(<3.0.0)')
@unittest.skipIf(MPI.COMM_WORLD.Get_size() < 2, 'mpi-world-size<2')
class TestDPM(unittest.TestCase):
message = [
None,
True, False,
-7, 0, 7,
-2**63+1, 2**63-1,
-2.17, 0.0, 3.14,
1+2j, 2-3j,
'mpi4py',
(1, 2, 3),
[1, 2, 3],
{1:2},
]
def testNamePublishing(self):
rank = MPI.COMM_WORLD.Get_rank()
service = f"mpi4py-{rank}"
port = MPI.Open_port()
MPI.Publish_name(service, port)
found = MPI.Lookup_name(service)
self.assertEqual(port, found)
MPI.Unpublish_name(service, port)
MPI.Close_port(port)
@unittest.skipMPI('mpich(==3.4.1)', ch4_ofi())
@unittest.skipMPI('mvapich', ch4_ofi())
@unittest.skipMPI('impi', MPI.COMM_WORLD.Get_size() > 2)
def testAcceptConnect(self):
comm_self = MPI.COMM_SELF
comm_world = MPI.COMM_WORLD
wrank = comm_world.Get_rank()
group_world = comm_world.Get_group()
group = group_world.Excl([0])
group_world.Free()
comm = comm_world.Create(group)
group.Free()
if wrank == 0:
self.assertEqual(comm, MPI.COMM_NULL)
else:
self.assertNotEqual(comm, MPI.COMM_NULL)
self.assertEqual(comm.size, comm_world.size-1)
self.assertEqual(comm.rank, comm_world.rank-1)
if wrank == 0:
port = MPI.Open_port()
comm_world.send(port, dest=1)
intercomm = comm_self.Accept(port)
self.assertEqual(intercomm.remote_size, comm_world.size-1)
self.assertEqual(intercomm.size, 1)
self.assertEqual(intercomm.rank, 0)
MPI.Close_port(port)
else:
if wrank == 1:
port = comm_world.recv(source=0)
else:
port = None
intercomm = comm.Connect(port, root=0)
self.assertEqual(intercomm.remote_size, 1)
self.assertEqual(intercomm.size, comm_world.size-1)
self.assertEqual(intercomm.rank, comm.rank)
comm.Free()
if wrank == 0:
message = TestDPM.message
root = MPI.ROOT
else:
message = None
root = 0
message = intercomm.bcast(message, root)
if wrank == 0:
self.assertIsNone(message)
else:
self.assertEqual(message, TestDPM.message)
intercomm.Free()
def testConnectAccept(self):
comm_self = MPI.COMM_SELF
comm_world = MPI.COMM_WORLD
wrank = comm_world.Get_rank()
group_world = comm_world.Get_group()
group = group_world.Excl([0])
group_world.Free()
comm = comm_world.Create(group)
group.Free()
if wrank == 0:
self.assertEqual(comm, MPI.COMM_NULL)
else:
self.assertNotEqual(comm, MPI.COMM_NULL)
self.assertEqual(comm.size, comm_world.size-1)
self.assertEqual(comm.rank, comm_world.rank-1)
if wrank == 0:
port = comm_world.recv(source=1)
intercomm = comm_self.Connect(port)
self.assertEqual(intercomm.remote_size, comm_world.size-1)
self.assertEqual(intercomm.size, 1)
self.assertEqual(intercomm.rank, 0)
else:
if wrank == 1:
port = MPI.Open_port()
comm_world.send(port, dest=0)
else:
port = None
intercomm = comm.Accept(port, root=0)
if wrank == 1:
MPI.Close_port(port)
self.assertEqual(intercomm.remote_size, 1)
self.assertEqual(intercomm.size, comm_world.size-1)
self.assertEqual(intercomm.rank, comm.rank)
comm.Free()
if wrank == 0:
message = TestDPM.message
root = MPI.ROOT
else:
message = None
root = 0
message = intercomm.bcast(message, root)
if wrank == 0:
self.assertIsNone(message)
else:
self.assertEqual(message, TestDPM.message)
intercomm.Free()
@unittest.skipIf(socket is None, 'socket')
@unittest.skipMPI('impi', MPI.COMM_WORLD.Get_size() > 2
and github() and os.name == 'nt')
def testJoin(self):
size = MPI.COMM_WORLD.Get_size()
rank = MPI.COMM_WORLD.Get_rank()
server = client = address = None
host = socket.gethostname()
addrinfo = socket.getaddrinfo(host, None, type=socket.SOCK_STREAM)
addr_families = [info[0] for info in addrinfo]
# if both INET and INET6 are available, don't assume the order
# is the same on both server and client. Prefer INET if available.
addr_family = None
if socket.AF_INET in addr_families:
addr_family = socket.AF_INET
elif socket.AF_INET6 in addr_families:
addr_family = socket.AF_INET6
addr_family = MPI.COMM_WORLD.bcast(addr_family, root=0)
supported = (addr_family in addr_families)
supported = MPI.COMM_WORLD.allreduce(supported, op=MPI.LAND)
if not supported:
self.skipTest("socket-inet")
# create server/client sockets
if rank == 0: # server
server = socket.socket(addr_family, socket.SOCK_STREAM)
server.bind((host, 0))
server.listen(0)
if rank == 1: # client
client = socket.socket(addr_family, socket.SOCK_STREAM)
# communicate address
if rank == 0:
address = server.getsockname()
MPI.COMM_WORLD.ssend(address, 1)
if rank == 1:
address = MPI.COMM_WORLD.recv(None, 0)
MPI.COMM_WORLD.Barrier()
# stablish client/server connection
connected = False
if rank == 0: # server
client = server.accept()[0]
server.close()
if rank == 1: # client
try:
client.connect(address)
connected = True
except OSError:
raise
connected = MPI.COMM_WORLD.bcast(connected, root=1)
# test Comm.Join()
MPI.COMM_WORLD.Barrier()
if client:
fd = client.fileno()
intercomm = MPI.Comm.Join(fd)
client.close()
if intercomm != MPI.COMM_NULL:
self.assertEqual(intercomm.remote_size, 1)
self.assertEqual(intercomm.size, 1)
self.assertEqual(intercomm.rank, 0)
if rank == 0:
message = TestDPM.message
root = MPI.ROOT
else:
message = None
root = 0
message = intercomm.bcast(message, root)
if rank == 0:
self.assertIsNone(message)
else:
self.assertEqual(message, TestDPM.message)
intercomm.Free()
MPI.COMM_WORLD.Barrier()
if __name__ == '__main__':
unittest.main()
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