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from mpi4py import MPI
import mpiunittest as unittest
import arrayimpl
def create_topo_comms(comm):
size = comm.Get_size()
rank = comm.Get_rank()
# Cartesian
n = int(size**1/2.0)
m = int(size**1/3.0)
if m*m*m == size:
dims = [m, m, m]
elif n*n == size:
dims = [n, n]
else:
dims = [size]
periods = [True] * len(dims)
yield comm.Create_cart(dims, periods=periods)
# Graph
index, edges = [0], []
for i in range(size):
pos = index[-1]
index.append(pos+2)
edges.append((i-1)%size)
edges.append((i+1)%size)
yield comm.Create_graph(index, edges)
# Dist Graph
sources = [(rank-2)%size, (rank-1)%size]
destinations = [(rank+1)%size, (rank+2)%size]
yield comm.Create_dist_graph_adjacent(sources, destinations)
def get_neighbors_count(comm):
topo = comm.Get_topology()
if topo == MPI.CART:
ndim = comm.Get_dim()
return 2*ndim, 2*ndim
if topo == MPI.GRAPH:
rank = comm.Get_rank()
nneighbors = comm.Get_neighbors_count(rank)
return nneighbors, nneighbors
if topo == MPI.DIST_GRAPH:
indeg, outdeg, w = comm.Get_dist_neighbors_count()
return indeg, outdeg
return 0, 0
def StartWaitFree(request):
request.Start()
request.Wait()
request.Free()
class BaseTestCCONghBuf:
COMM = MPI.COMM_NULL
def testNeighborAllgather(self):
for comm in create_topo_comms(self.COMM):
rsize, ssize = get_neighbors_count(comm)
for array, typecode in arrayimpl.loop():
for v in range(3):
check = arrayimpl.scalar(v)
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
StartWaitFree(
comm.Neighbor_allgather_init(sbuf.as_mpi(), rbuf.as_mpi())
)
for value in rbuf.flat:
self.assertEqual(value, check)
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
StartWaitFree(
comm.Neighbor_allgatherv_init(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3))
)
for value in rbuf.flat:
self.assertEqual(value, check)
comm.Free()
def testNeighborAlltoall(self):
for comm in create_topo_comms(self.COMM):
rsize, ssize = get_neighbors_count(comm)
for array, typecode in arrayimpl.loop():
for v in range(3):
check = arrayimpl.scalar(v)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
StartWaitFree(
comm.Neighbor_alltoall_init(sbuf.as_mpi(), rbuf.as_mpi_c(3))
)
for value in rbuf.flat:
self.assertEqual(value, check)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
StartWaitFree(
comm.Neighbor_alltoall_init(sbuf.as_mpi(), rbuf.as_mpi())
)
for value in rbuf.flat:
self.assertEqual(value, check)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
StartWaitFree(
comm.Neighbor_alltoallv_init(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3))
)
for value in rbuf.flat:
self.assertEqual(value, check)
comm.Free()
def testNeighborAlltoallw(self):
size = self.COMM.Get_size()
for comm in create_topo_comms(self.COMM):
rsize, ssize = get_neighbors_count(comm)
for array, typecode in arrayimpl.loop():
for n in range(1,4):
for v in range(3):
check = arrayimpl.scalar(v)
sbuf = array( v, typecode, (ssize, n))
rbuf = array(-1, typecode, (rsize, n))
sdt, rdt = sbuf.mpidtype, rbuf.mpidtype
sdsp = list(range(0, ssize*n*sdt.extent, n*sdt.extent))
rdsp = list(range(0, rsize*n*rdt.extent, n*rdt.extent))
smsg = [sbuf.as_raw(), ([n]*ssize, sdsp), [sdt]*ssize]
rmsg = (rbuf.as_raw(), ([n]*rsize, rdsp), [rdt]*rsize)
StartWaitFree(
comm.Neighbor_alltoallw_init(smsg, rmsg)
)
for value in rbuf.flat:
self.assertEqual(value, check)
comm.Free()
class TestCCONghBufSelf(BaseTestCCONghBuf, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestCCONghBufWorld(BaseTestCCONghBuf, unittest.TestCase):
COMM = MPI.COMM_WORLD
class TestCCONghBufSelfDup(TestCCONghBufSelf):
def setUp(self):
self.COMM = MPI.COMM_SELF.Dup()
def tearDown(self):
self.COMM.Free()
class TestCCONghBufWorldDup(TestCCONghBufWorld):
def setUp(self):
self.COMM = MPI.COMM_WORLD.Dup()
def tearDown(self):
self.COMM.Free()
try:
StartWaitFree( MPI.COMM_SELF.Barrier_init() )
except NotImplementedError:
unittest.disable(BaseTestCCONghBuf, 'mpi-coll-persist')
if __name__ == '__main__':
unittest.main()
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