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from mpi4py import MPI
import mpiunittest as unittest
import sys, os, mpi4py
import platform
MPI4PYPATH = os.path.abspath(
os.path.dirname(mpi4py.__path__[0])
)
CHILDSCRIPT = os.path.abspath(
os.path.join(os.path.dirname(__file__), 'spawn_child.py')
)
def childscript():
from tempfile import mkstemp
from textwrap import dedent
fd, script = mkstemp(suffix='.py', prefix="mpi4py-")
os.close(fd)
python = sys.executable
pypath = MPI4PYPATH
with open(script, "w") as f:
f.write(dedent(f"""\
#!{python}
import sys; sys.path.insert(0, "{pypath}")
from mpi4py import MPI
parent = MPI.Comm.Get_parent()
parent.Barrier()
parent.Disconnect()
assert parent == MPI.COMM_NULL
parent = MPI.Comm.Get_parent()
assert parent == MPI.COMM_NULL
"""))
os.chmod(script, int("770", 8))
return script
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 == ""
def using_GPU():
# Once a CUDA context is created, the process cannot be forked.
# Note: This seems to be a partial fix. Even if we are running cpu-only
# tests, if MPI is built with CUDA support we can still fail. Unfortunately
# there is no runtime check for us to detect if it's the case...
using_cupy = (sys.modules.get('cupy') is not None)
using_numba = (sys.modules.get('numba') is not None)
return using_cupy or using_numba
def sequential():
return MPI.COMM_WORLD.Get_size() == 1
def macos():
return sys.platform == 'darwin'
def windows():
return sys.platform == 'win32'
def github():
return os.environ.get('GITHUB_ACTIONS') == 'true'
def azure():
return os.environ.get('TF_BUILD') == 'True'
def skip_spawn():
return (
os.environ.get('MPI4PY_TEST_SPAWN')
in (None, '0', 'no', 'off', 'false')
)
@unittest.skipMPI('MPI(<2.0)')
@unittest.skipMPI('openmpi(<3.0.0)')
@unittest.skipMPI('openmpi(==4.0.0)')
@unittest.skipMPI('openmpi(==4.0.1)', macos())
@unittest.skipMPI('openmpi(==4.0.2)', macos())
@unittest.skipMPI('openmpi(>=4.1.0,<4.2.0)', azure())
@unittest.skipMPI('openmpi(>=4.1.0,<4.2.0)', github())
@unittest.skipMPI('openmpi(>=5.0.0,<5.0.7)', skip_spawn())
@unittest.skipMPI('mpich(<4.1.0)', appnum() is None)
@unittest.skipMPI('mpich(<4.3.0)', badport())
@unittest.skipMPI('msmpi(<8.1.0)')
@unittest.skipMPI('msmpi', skip_spawn())
@unittest.skipMPI('msmpi', appnum() is None)
@unittest.skipMPI('msmpi', os.environ.get("PMI_APPNUM") is None)
@unittest.skipMPI('mvapich', appnum() is None)
@unittest.skipMPI('mvapich', badport())
@unittest.skipMPI('mvapich(<3.0.0)')
@unittest.skipMPI('MPICH2')
@unittest.skipMPI('MPICH1')
@unittest.skipIf(using_GPU(), 'using CUDA')
class BaseTestSpawn:
COMM = MPI.COMM_NULL
COMMAND = sys.executable
ARGS = [CHILDSCRIPT, MPI4PYPATH]
MAXPROCS = 1
INFO = MPI.INFO_NULL
ROOT = 0
class BaseTestSpawnSingle(BaseTestSpawn):
def testCommSpawn(self):
self.COMM.Barrier()
child = self.COMM.Spawn(
self.COMMAND, self.ARGS, self.MAXPROCS,
info=self.INFO, root=self.ROOT,
)
local_size = child.Get_size()
remote_size = child.Get_remote_size()
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(local_size, self.COMM.Get_size())
self.assertEqual(remote_size, self.MAXPROCS)
@unittest.skipMPI('msmpi')
def testErrcodes(self):
self.COMM.Barrier()
errcodes = []
child = self.COMM.Spawn(
self.COMMAND, self.ARGS, self.MAXPROCS,
info=self.INFO, root=self.ROOT,
errcodes=errcodes,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(len(errcodes), self.MAXPROCS)
for errcode in errcodes:
self.assertEqual(errcode, MPI.SUCCESS)
@unittest.skipMPI('msmpi')
@unittest.skipMPI('mpich(==3.4.1)', ch4_ofi())
def testArgsOnlyAtRoot(self):
self.COMM.Barrier()
if self.COMM.Get_rank() == self.ROOT:
child = self.COMM.Spawn(
self.COMMAND, self.ARGS, self.MAXPROCS,
info=self.INFO, root=self.ROOT,
)
else:
child = self.COMM.Spawn(
None, None, -1,
info=MPI.INFO_NULL, root=self.ROOT,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
@unittest.skipIf(os.name != 'posix', 'posix')
def testNoArgs(self):
self.COMM.Barrier()
script = None
if self.COMM.Get_rank() == self.ROOT:
script = childscript()
self.COMM.Barrier()
script = self.COMM.bcast(script, root=self.ROOT)
child = self.COMM.Spawn(
script, None, self.MAXPROCS,
info=self.INFO, root=self.ROOT,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
if self.COMM.Get_rank() == self.ROOT:
os.remove(script)
self.COMM.Barrier()
class BaseTestSpawnMultiple(BaseTestSpawn):
def testCommSpawn(self):
self.COMM.Barrier()
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [self.COMMAND] * count
ARGS = [self.ARGS] * len(COMMAND)
MAXPROCS = [self.MAXPROCS] * len(COMMAND)
INFO = [self.INFO] * len(COMMAND)
child = self.COMM.Spawn_multiple(
COMMAND, ARGS, MAXPROCS,
info=INFO, root=self.ROOT,
)
local_size = child.Get_size()
remote_size = child.Get_remote_size()
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(local_size, self.COMM.Get_size())
self.assertEqual(remote_size, sum(MAXPROCS))
def testCommSpawnDefaults1(self):
self.COMM.Barrier()
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [self.COMMAND] * count
ARGS = [self.ARGS] * len(COMMAND)
child = self.COMM.Spawn_multiple(COMMAND, ARGS)
local_size = child.Get_size()
remote_size = child.Get_remote_size()
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(local_size, self.COMM.Get_size())
self.assertEqual(remote_size, len(COMMAND))
def testCommSpawnDefaults2(self):
self.COMM.Barrier()
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [self.COMMAND] * count
ARGS = [self.ARGS] * len(COMMAND)
child = self.COMM.Spawn_multiple(COMMAND, ARGS, 1, MPI.INFO_NULL)
local_size = child.Get_size()
remote_size = child.Get_remote_size()
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(local_size, self.COMM.Get_size())
self.assertEqual(remote_size, len(COMMAND))
@unittest.skipMPI('msmpi')
def testErrcodes(self):
self.COMM.Barrier()
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [self.COMMAND] * count
ARGS = [self.ARGS]*len(COMMAND)
MAXPROCS = list(range(1, len(COMMAND)+1))
INFO = MPI.INFO_NULL
errcodelist = []
child = self.COMM.Spawn_multiple(
COMMAND, ARGS, MAXPROCS,
info=INFO, root=self.ROOT,
errcodes=errcodelist,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
self.assertEqual(len(errcodelist), len(COMMAND))
for i, errcodes in enumerate(errcodelist):
self.assertEqual(len(errcodes), MAXPROCS[i])
for errcode in errcodes:
self.assertEqual(errcode, MPI.SUCCESS)
@unittest.skipMPI('msmpi')
@unittest.skipIf(platform.machine() == 'ppc', "testArgsOnlyAtRoot fails on powerpc")
def testArgsOnlyAtRoot(self):
self.COMM.Barrier()
if self.COMM.Get_rank() == self.ROOT:
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [self.COMMAND] * count
ARGS = [self.ARGS] * len(COMMAND)
MAXPROCS = list(range(1, len(COMMAND)+1))
INFO = [MPI.INFO_NULL] * len(COMMAND)
child = self.COMM.Spawn_multiple(
COMMAND, ARGS, MAXPROCS,
info=INFO, root=self.ROOT,
)
else:
child = self.COMM.Spawn_multiple(
None, None, -1,
info=MPI.INFO_NULL, root=self.ROOT,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
@unittest.skipIf(os.name != 'posix', 'posix')
def testNoArgs(self):
self.COMM.Barrier()
script = None
if self.COMM.Get_rank() == self.ROOT:
script = childscript()
self.COMM.Barrier()
script = self.COMM.bcast(script, root=self.ROOT)
count = 2 + (self.COMM.Get_size() == 0)
COMMAND = [script] * count
MAXPROCS = list(range(1, len(COMMAND)+1))
INFO = [self.INFO] * len(COMMAND)
child = self.COMM.Spawn_multiple(
COMMAND, None, MAXPROCS,
info=INFO, root=self.ROOT,
)
child.Barrier()
child.Disconnect()
self.COMM.Barrier()
if self.COMM.Get_rank() == self.ROOT:
os.remove(script)
self.COMM.Barrier()
def testArgsBad(self):
if self.COMM.Get_size() > 1: return
CMDS = [self.COMMAND]
ARGS = [self.ARGS]
MAXP = [self.MAXPROCS]
INFO = [self.INFO]
with self.assertRaises(ValueError):
self.COMM.Spawn_multiple(CMDS[0], ARGS, MAXP, INFO, root=0)
with self.assertRaises(ValueError):
self.COMM.Spawn_multiple(CMDS, ARGS*2, MAXP, INFO, root=0)
with self.assertRaises(ValueError):
self.COMM.Spawn_multiple(CMDS, ARGS[0][0], MAXP*2, INFO, root=0)
with self.assertRaises(ValueError):
self.COMM.Spawn_multiple(CMDS, ARGS, MAXP[0], INFO*2, root=0)
class TestSpawnSingleSelf(BaseTestSpawnSingle, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestSpawnSingleWorld(BaseTestSpawnSingle, unittest.TestCase):
COMM = MPI.COMM_WORLD
class TestSpawnSingleSelfMany(TestSpawnSingleSelf):
MAXPROCS = MPI.COMM_WORLD.Get_size()
class TestSpawnSingleWorldMany(TestSpawnSingleWorld):
MAXPROCS = MPI.COMM_WORLD.Get_size()
class TestSpawnMultipleSelf(BaseTestSpawnMultiple, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestSpawnMultipleWorld(BaseTestSpawnMultiple, unittest.TestCase):
COMM = MPI.COMM_WORLD
class TestSpawnMultipleSelfMany(TestSpawnMultipleSelf):
MAXPROCS = MPI.COMM_WORLD.Get_size()
class TestSpawnMultipleWorldMany(TestSpawnMultipleWorld):
MAXPROCS = MPI.COMM_WORLD.Get_size()
if __name__ == '__main__':
unittest.main()
|
