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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
class BaseTestCCONghBuf(object):
COMM = MPI.COMM_NULL
def testNeighborAllgather(self):
for comm in create_topo_comms(self.COMM):
rsize, ssize = get_neighbors_count(comm)
for array in arrayimpl.ArrayTypes:
for typecode in arrayimpl.TypeMap:
for v in range(3):
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
comm.Neighbor_allgather(sbuf.as_mpi(), rbuf.as_mpi())
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
comm.Neighbor_allgatherv(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3))
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
comm.Ineighbor_allgather(sbuf.as_mpi(), rbuf.as_mpi()).Wait()
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, 3)
rbuf = array(-1, typecode, (rsize, 3))
comm.Ineighbor_allgatherv(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3)).Wait()
for value in rbuf.flat:
self.assertEqual(value, v)
comm.Free()
def testNeighborAlltoall(self):
for comm in create_topo_comms(self.COMM):
rsize, ssize = get_neighbors_count(comm)
for array in arrayimpl.ArrayTypes:
for typecode in arrayimpl.TypeMap:
for v in range(3):
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
comm.Neighbor_alltoall(sbuf.as_mpi(), rbuf.as_mpi_c(3))
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
comm.Neighbor_alltoall(sbuf.as_mpi(), rbuf.as_mpi())
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
comm.Neighbor_alltoallv(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3))
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
comm.Ineighbor_alltoall(sbuf.as_mpi(), rbuf.as_mpi()).Wait()
for value in rbuf.flat:
self.assertEqual(value, v)
sbuf = array( v, typecode, (ssize, 3))
rbuf = array(-1, typecode, (rsize, 3))
comm.Ineighbor_alltoallv(sbuf.as_mpi_c(3), rbuf.as_mpi_c(3)).Wait()
for value in rbuf.flat:
self.assertEqual(value, v)
comm.Free()
class TestCCONghBufSelf(BaseTestCCONghBuf, unittest.TestCase):
COMM = MPI.COMM_SELF
class TestCCONghBufWorld(BaseTestCCONghBuf, unittest.TestCase):
COMM = MPI.COMM_WORLD
class TestCCONghBufSelfDup(BaseTestCCONghBuf, unittest.TestCase):
def setUp(self):
self.COMM = MPI.COMM_SELF.Dup()
def tearDown(self):
self.COMM.Free()
class TestCCONghBufWorldDup(BaseTestCCONghBuf, unittest.TestCase):
def setUp(self):
self.COMM = MPI.COMM_WORLD.Dup()
def tearDown(self):
self.COMM.Free()
cartcomm = MPI.COMM_SELF.Create_cart([1], periods=[1])
try:
cartcomm.neighbor_allgather(None)
except NotImplementedError:
del BaseTestCCONghBuf
del TestCCONghBufSelf
del TestCCONghBufWorld
del TestCCONghBufSelfDup
del TestCCONghBufWorldDup
finally:
cartcomm.Free()
if __name__ == '__main__':
unittest.main()
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