def test_multi_recv_0deg():
# test recv with 0deg nodes;
g = DGLGraph()
def _message(edges):
return {'m' : edges.src['h']}
def _reduce(nodes):
return {'h' : nodes.data['h'] + nodes.mailbox['m'].sum(1)}
def _apply(nodes):
return {'h' : nodes.data['h'] * 2}
def _init2(shape, dtype, ctx, ids):
return 2 + th.zeros(shape, dtype=dtype, device=ctx)
g.register_message_func(_message)
g.register_reduce_func(_reduce)
g.register_apply_node_func(_apply)
g.set_n_initializer(_init2)
g.add_nodes(2)
g.add_edge(0, 1)
# recv both 0deg and non-0deg nodes
old = th.randn((2, 5))
g.ndata['h'] = old
g.send((0, 1))
g.recv([0, 1])
new = g.ndata['h']
# 0deg check: initialized with the func and got applied
assert U.allclose(new[0], th.full((5,), 4))
# non-0deg check
assert U.allclose(new[1], th.sum(old, 0) * 2)
# recv again on zero degree node
g.recv([0])
assert U.allclose(g.nodes[0].data['h'], th.full((5,), 8))
# recv again on node with no incoming message
g.recv([1])
assert U.allclose(g.nodes[1].data['h'], th.sum(old, 0) * 4)
def test_dynamic_addition():
N = 3
D = 1
g = DGLGraph()
def _init(shape, dtype, ctx, ids):
return F.copy_to(F.astype(F.randn(shape), dtype), ctx)
g.set_n_initializer(_init)
g.set_e_initializer(_init)
def _message(edges):
return {
'm':
edges.src['h1'] + edges.dst['h2'] + edges.data['h1'] +
edges.data['h2']
}
def _reduce(nodes):
return {'h': F.sum(nodes.mailbox['m'], 1)}
def _apply(nodes):
return {'h': nodes.data['h']}
g.register_message_func(_message)
g.register_reduce_func(_reduce)
g.register_apply_node_func(_apply)
g.set_n_initializer(dgl.init.zero_initializer)
g.set_e_initializer(dgl.init.zero_initializer)
# add nodes and edges
g.add_nodes(N)
g.ndata.update({'h1': F.randn((N, D)), 'h2': F.randn((N, D))})
g.add_nodes(3)
g.add_edge(0, 1)
g.add_edge(1, 0)
g.edata.update({'h1': F.randn((2, D)), 'h2': F.randn((2, D))})
g.send()
expected = F.copy_to(F.ones((g.number_of_edges(), ), dtype=F.int64),
F.cpu())
assert F.array_equal(g._get_msg_index().tousertensor(), expected)
# add more edges
g.add_edges([0, 2], [2, 0], {'h1': F.randn((2, D))})
g.send(([0, 2], [2, 0]))
g.recv(0)
g.add_edge(1, 2)
g.edges[4].data['h1'] = F.randn((1, D))
g.send((1, 2))
g.recv([1, 2])
h = g.ndata.pop('h')
# a complete round of send and recv
g.send()
g.recv()
assert F.allclose(h, g.ndata['h'])
def test_recv_0deg_newfld():
# test recv with 0deg nodes; the reducer also creates a new field
g = DGLGraph()
g.add_nodes(2)
g.add_edge(0, 1)
def _message(edges):
return {'m': edges.src['h']}
def _reduce(nodes):
return {'h1': nodes.data['h'] + mx.nd.sum(nodes.mailbox['m'], 1)}
def _apply(nodes):
return {'h1': nodes.data['h1'] * 2}
def _init2(shape, dtype, ctx, ids):
return 2 + mx.nd.zeros(shape=shape, dtype=dtype, ctx=ctx)
g.register_message_func(_message)
g.register_reduce_func(_reduce)
g.register_apply_node_func(_apply)
# test#1: recv both 0deg and non-0deg nodes
old = mx.nd.random.normal(shape=(2, 5))
g.set_n_initializer(_init2, 'h1')
g.ndata['h'] = old
g.send((0, 1))
g.recv([0, 1])
new = g.ndata.pop('h1')
# 0deg check: initialized with the func and got applied
assert np.allclose(new[0].asnumpy(), np.full((5, ), 4))
# non-0deg check
assert np.allclose(new[1].asnumpy(), mx.nd.sum(old, 0).asnumpy() * 2)
# test#2: recv only 0deg node
old = mx.nd.random.normal(shape=(2, 5))
g.ndata['h'] = old
g.ndata['h1'] = mx.nd.full((2, 5), -1) # this is necessary
g.send((0, 1))
g.recv(0)
new = g.ndata.pop('h1')
# 0deg check: fallback to apply
assert np.allclose(new[0].asnumpy(), np.full((5, ), -2))
# non-0deg check: not changed
assert np.allclose(new[1].asnumpy(), np.full((5, ), -1))
def test_recv_0deg():
# test recv with 0deg nodes;
g = DGLGraph()
g.add_nodes(2)
g.add_edge(0, 1)
def _message(edges):
return {'m': edges.src['h']}
def _reduce(nodes):
return {'h': nodes.data['h'] + nodes.mailbox['m'].sum(1)}
def _apply(nodes):
return {'h': nodes.data['h'] * 2}
def _init2(shape, dtype, ctx, ids):
return 2 + th.zeros(shape, dtype=dtype, device=ctx)
g.register_message_func(_message)
g.register_reduce_func(_reduce)
g.register_apply_node_func(_apply)
g.set_n_initializer(_init2, 'h')
# test#1: recv both 0deg and non-0deg nodes
old = th.randn((2, 5))
g.ndata['h'] = old
g.send((0, 1))
g.recv([0, 1])
new = g.ndata.pop('h')
# 0deg check: initialized with the func and got applied
assert U.allclose(new[0], th.full((5, ), 4))
# non-0deg check
assert U.allclose(new[1], th.sum(old, 0) * 2)
# test#2: recv only 0deg node is equal to apply
old = th.randn((2, 5))
g.ndata['h'] = old
g.send((0, 1))
g.recv(0)
new = g.ndata.pop('h')
# 0deg check: equal to apply_nodes
assert U.allclose(new[0], 2 * old[0])
# non-0deg check: untouched
assert U.allclose(new[1], old[1])
