Files
dgl/tests/python/common/function/test_basics.py
2023-03-24 18:44:24 +08:00

777 lines
22 KiB
Python

import unittest
from collections import defaultdict as ddict
import backend as F
import dgl
import networkx as nx
import numpy as np
import scipy.sparse as ssp
from dgl import DGLGraph
from utils import parametrize_idtype
D = 5
reduce_msg_shapes = set()
def message_func(edges):
assert F.ndim(edges.src["h"]) == 2
assert F.shape(edges.src["h"])[1] == D
return {"m": edges.src["h"]}
def reduce_func(nodes):
msgs = nodes.mailbox["m"]
reduce_msg_shapes.add(tuple(msgs.shape))
assert F.ndim(msgs) == 3
assert F.shape(msgs)[2] == D
return {"accum": F.sum(msgs, 1)}
def apply_node_func(nodes):
return {"h": nodes.data["h"] + nodes.data["accum"]}
def generate_graph_old(grad=False):
g = DGLGraph()
g.add_nodes(10) # 10 nodes
# create a graph where 0 is the source and 9 is the sink
# 17 edges
for i in range(1, 9):
g.add_edges(0, i)
g.add_edges(i, 9)
# add a back flow from 9 to 0
g.add_edges(9, 0)
g = g.to(F.ctx())
ncol = F.randn((10, D))
ecol = F.randn((17, D))
if grad:
ncol = F.attach_grad(ncol)
ecol = F.attach_grad(ecol)
g.ndata["h"] = ncol
g.edata["w"] = ecol
g.set_n_initializer(dgl.init.zero_initializer)
g.set_e_initializer(dgl.init.zero_initializer)
return g
def generate_graph(idtype, grad=False):
"""
s, d, eid
0, 1, 0
1, 9, 1
0, 2, 2
2, 9, 3
0, 3, 4
3, 9, 5
0, 4, 6
4, 9, 7
0, 5, 8
5, 9, 9
0, 6, 10
6, 9, 11
0, 7, 12
7, 9, 13
0, 8, 14
8, 9, 15
9, 0, 16
"""
u = F.tensor([0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 9])
v = F.tensor([1, 9, 2, 9, 3, 9, 4, 9, 5, 9, 6, 9, 7, 9, 8, 9, 0])
g = dgl.graph((u, v), idtype=idtype)
assert g.device == F.ctx()
ncol = F.randn((10, D))
ecol = F.randn((17, D))
if grad:
ncol = F.attach_grad(ncol)
ecol = F.attach_grad(ecol)
g.ndata["h"] = ncol
g.edata["w"] = ecol
g.set_n_initializer(dgl.init.zero_initializer)
g.set_e_initializer(dgl.init.zero_initializer)
return g
def test_compatible():
g = generate_graph_old()
@parametrize_idtype
def test_batch_setter_getter(idtype):
def _pfc(x):
return list(F.zerocopy_to_numpy(x)[:, 0])
g = generate_graph(idtype)
# set all nodes
g.ndata["h"] = F.zeros((10, D))
assert F.allclose(g.ndata["h"], F.zeros((10, D)))
# pop nodes
old_len = len(g.ndata)
g.ndata.pop("h")
assert len(g.ndata) == old_len - 1
g.ndata["h"] = F.zeros((10, D))
# set partial nodes
u = F.tensor([1, 3, 5], g.idtype)
g.nodes[u].data["h"] = F.ones((3, D))
assert _pfc(g.ndata["h"]) == [
0.0,
1.0,
0.0,
1.0,
0.0,
1.0,
0.0,
0.0,
0.0,
0.0,
]
# get partial nodes
u = F.tensor([1, 2, 3], g.idtype)
assert _pfc(g.nodes[u].data["h"]) == [1.0, 0.0, 1.0]
"""
s, d, eid
0, 1, 0
1, 9, 1
0, 2, 2
2, 9, 3
0, 3, 4
3, 9, 5
0, 4, 6
4, 9, 7
0, 5, 8
5, 9, 9
0, 6, 10
6, 9, 11
0, 7, 12
7, 9, 13
0, 8, 14
8, 9, 15
9, 0, 16
"""
# set all edges
g.edata["l"] = F.zeros((17, D))
assert _pfc(g.edata["l"]) == [0.0] * 17
# pop edges
old_len = len(g.edata)
g.edata.pop("l")
assert len(g.edata) == old_len - 1
g.edata["l"] = F.zeros((17, D))
# set partial edges (many-many)
u = F.tensor([0, 0, 2, 5, 9], g.idtype)
v = F.tensor([1, 3, 9, 9, 0], g.idtype)
g.edges[u, v].data["l"] = F.ones((5, D))
truth = [0.0] * 17
truth[0] = truth[4] = truth[3] = truth[9] = truth[16] = 1.0
assert _pfc(g.edata["l"]) == truth
u = F.tensor([3, 4, 6], g.idtype)
v = F.tensor([9, 9, 9], g.idtype)
g.edges[u, v].data["l"] = F.ones((3, D))
truth[5] = truth[7] = truth[11] = 1.0
assert _pfc(g.edata["l"]) == truth
u = F.tensor([0, 0, 0], g.idtype)
v = F.tensor([4, 5, 6], g.idtype)
g.edges[u, v].data["l"] = F.ones((3, D))
truth[6] = truth[8] = truth[10] = 1.0
assert _pfc(g.edata["l"]) == truth
u = F.tensor([0, 6, 0], g.idtype)
v = F.tensor([6, 9, 7], g.idtype)
assert _pfc(g.edges[u, v].data["l"]) == [1.0, 1.0, 0.0]
@parametrize_idtype
def test_batch_setter_autograd(idtype):
g = generate_graph(idtype, grad=True)
h1 = g.ndata["h"]
# partial set
v = F.tensor([1, 2, 8], g.idtype)
hh = F.attach_grad(F.zeros((len(v), D)))
with F.record_grad():
g.nodes[v].data["h"] = hh
h2 = g.ndata["h"]
F.backward(h2, F.ones((10, D)) * 2)
assert F.array_equal(
F.grad(h1)[:, 0],
F.tensor([2.0, 0.0, 0.0, 2.0, 2.0, 2.0, 2.0, 2.0, 0.0, 2.0]),
)
assert F.array_equal(F.grad(hh)[:, 0], F.tensor([2.0, 2.0, 2.0]))
def _test_nx_conversion():
# check conversion between networkx and DGLGraph
def _check_nx_feature(nxg, nf, ef):
# check node and edge feature of nxg
# this is used to check to_networkx
num_nodes = len(nxg)
num_edges = nxg.size()
if num_nodes > 0:
node_feat = ddict(list)
for nid, attr in nxg.nodes(data=True):
assert len(attr) == len(nf)
for k in nxg.nodes[nid]:
node_feat[k].append(F.unsqueeze(attr[k], 0))
for k in node_feat:
feat = F.cat(node_feat[k], 0)
assert F.allclose(feat, nf[k])
else:
assert len(nf) == 0
if num_edges > 0:
edge_feat = ddict(lambda: [0] * num_edges)
for u, v, attr in nxg.edges(data=True):
assert len(attr) == len(ef) + 1 # extra id
eid = attr["id"]
for k in ef:
edge_feat[k][eid] = F.unsqueeze(attr[k], 0)
for k in edge_feat:
feat = F.cat(edge_feat[k], 0)
assert F.allclose(feat, ef[k])
else:
assert len(ef) == 0
n1 = F.randn((5, 3))
n2 = F.randn((5, 10))
n3 = F.randn((5, 4))
e1 = F.randn((4, 5))
e2 = F.randn((4, 7))
g = dgl.graph(([0, 1, 3, 4], [2, 4, 0, 3]))
g.ndata.update({"n1": n1, "n2": n2, "n3": n3})
g.edata.update({"e1": e1, "e2": e2})
# convert to networkx
nxg = g.to_networkx(node_attrs=["n1", "n3"], edge_attrs=["e1", "e2"])
assert len(nxg) == 5
assert nxg.size() == 4
_check_nx_feature(nxg, {"n1": n1, "n3": n3}, {"e1": e1, "e2": e2})
# convert to DGLGraph, nx graph has id in edge feature
# use id feature to test non-tensor copy
g = dgl.from_networkx(nxg, node_attrs=["n1"], edge_attrs=["e1", "id"])
# check graph size
assert g.num_nodes() == 5
assert g.num_edges() == 4
# check number of features
# test with existing dglgraph (so existing features should be cleared)
assert len(g.ndata) == 1
assert len(g.edata) == 2
# check feature values
assert F.allclose(g.ndata["n1"], n1)
# with id in nx edge feature, e1 should follow original order
assert F.allclose(g.edata["e1"], e1)
assert F.array_equal(
F.astype(g.edata["id"], F.int64), F.copy_to(F.arange(0, 4), F.cpu())
)
# test conversion after modifying DGLGraph
g.edata.pop("id") # pop id so we don't need to provide id when adding edges
new_n = F.randn((2, 3))
new_e = F.randn((3, 5))
g.add_nodes(2, data={"n1": new_n})
# add three edges, one is a multi-edge
g.add_edges([3, 6, 0], [4, 5, 2], data={"e1": new_e})
n1 = F.cat((n1, new_n), 0)
e1 = F.cat((e1, new_e), 0)
# convert to networkx again
nxg = g.to_networkx(node_attrs=["n1"], edge_attrs=["e1"])
assert len(nxg) == 7
assert nxg.size() == 7
_check_nx_feature(nxg, {"n1": n1}, {"e1": e1})
# now test convert from networkx without id in edge feature
# first pop id in edge feature
for _, _, attr in nxg.edges(data=True):
attr.pop("id")
# test with a new graph
g = dgl.from_networkx(nxg, node_attrs=["n1"], edge_attrs=["e1"])
# check graph size
assert g.num_nodes() == 7
assert g.num_edges() == 7
# check number of features
assert len(g.ndata) == 1
assert len(g.edata) == 1
# check feature values
assert F.allclose(g.ndata["n1"], n1)
# edge feature order follows nxg.edges()
edge_feat = []
for _, _, attr in nxg.edges(data=True):
edge_feat.append(F.unsqueeze(attr["e1"], 0))
edge_feat = F.cat(edge_feat, 0)
assert F.allclose(g.edata["e1"], edge_feat)
# Test converting from a networkx graph whose nodes are
# not labeled with consecutive-integers.
nxg = nx.cycle_graph(5)
nxg.remove_nodes_from([0, 4])
for u in nxg.nodes():
nxg.nodes[u]["h"] = F.tensor([u])
for u, v, d in nxg.edges(data=True):
d["h"] = F.tensor([u, v])
g = dgl.from_networkx(nxg, node_attrs=["h"], edge_attrs=["h"])
assert g.num_nodes() == 3
assert g.num_edges() == 4
assert g.has_edge_between(0, 1)
assert g.has_edge_between(1, 2)
assert F.allclose(g.ndata["h"], F.tensor([[1.0], [2.0], [3.0]]))
assert F.allclose(
g.edata["h"], F.tensor([[1.0, 2.0], [1.0, 2.0], [2.0, 3.0], [2.0, 3.0]])
)
@parametrize_idtype
def test_apply_nodes(idtype):
def _upd(nodes):
return {"h": nodes.data["h"] * 2}
g = generate_graph(idtype)
old = g.ndata["h"]
g.apply_nodes(_upd)
assert F.allclose(old * 2, g.ndata["h"])
u = F.tensor([0, 3, 4, 6], g.idtype)
g.apply_nodes(lambda nodes: {"h": nodes.data["h"] * 0.0}, u)
assert F.allclose(F.gather_row(g.ndata["h"], u), F.zeros((4, D)))
@parametrize_idtype
def test_apply_edges(idtype):
def _upd(edges):
return {"w": edges.data["w"] * 2}
g = generate_graph(idtype)
old = g.edata["w"]
g.apply_edges(_upd)
assert F.allclose(old * 2, g.edata["w"])
u = F.tensor([0, 0, 0, 4, 5, 6], g.idtype)
v = F.tensor([1, 2, 3, 9, 9, 9], g.idtype)
g.apply_edges(lambda edges: {"w": edges.data["w"] * 0.0}, (u, v))
eid = F.tensor(g.edge_ids(u, v))
assert F.allclose(F.gather_row(g.edata["w"], eid), F.zeros((6, D)))
@parametrize_idtype
def test_update_routines(idtype):
g = generate_graph(idtype)
# send_and_recv
reduce_msg_shapes.clear()
u = [0, 0, 0, 4, 5, 6]
v = [1, 2, 3, 9, 9, 9]
g.send_and_recv((u, v), message_func, reduce_func, apply_node_func)
assert reduce_msg_shapes == {(1, 3, D), (3, 1, D)}
reduce_msg_shapes.clear()
try:
g.send_and_recv([u, v])
assert False
except:
pass
# pull
v = F.tensor([1, 2, 3, 9], g.idtype)
reduce_msg_shapes.clear()
g.pull(v, message_func, reduce_func, apply_node_func)
assert reduce_msg_shapes == {(1, 8, D), (3, 1, D)}
reduce_msg_shapes.clear()
# push
v = F.tensor([0, 1, 2, 3], g.idtype)
reduce_msg_shapes.clear()
g.push(v, message_func, reduce_func, apply_node_func)
assert reduce_msg_shapes == {(1, 3, D), (8, 1, D)}
reduce_msg_shapes.clear()
# update_all
reduce_msg_shapes.clear()
g.update_all(message_func, reduce_func, apply_node_func)
assert reduce_msg_shapes == {(1, 8, D), (9, 1, D)}
reduce_msg_shapes.clear()
@parametrize_idtype
def test_update_all_0deg(idtype):
# test#1
g = dgl.graph(([1, 2, 3, 4], [0, 0, 0, 0]), idtype=idtype, device=F.ctx())
def _message(edges):
return {"m": edges.src["h"]}
def _reduce(nodes):
return {"x": nodes.data["h"] + F.sum(nodes.mailbox["m"], 1)}
def _apply(nodes):
return {"x": nodes.data["x"] * 2}
def _init2(shape, dtype, ctx, ids):
return 2 + F.zeros(shape, dtype, ctx)
g.set_n_initializer(_init2, "x")
old_repr = F.randn((5, 5))
g.ndata["h"] = old_repr
g.update_all(_message, _reduce, _apply)
new_repr = g.ndata["x"]
# the first row of the new_repr should be the sum of all the node
# features; while the 0-deg nodes should be initialized by the
# initializer and applied with UDF.
assert F.allclose(new_repr[1:], 2 * (2 + F.zeros((4, 5))))
assert F.allclose(new_repr[0], 2 * F.sum(old_repr, 0))
# test#2: graph with no edge
g = dgl.graph(([], []), num_nodes=5, idtype=idtype, device=F.ctx())
g.ndata["h"] = old_repr
g.update_all(_message, _reduce, lambda nodes: {"h": nodes.data["h"] * 2})
new_repr = g.ndata["h"]
# should fallback to apply
assert F.allclose(new_repr, 2 * old_repr)
@parametrize_idtype
def test_pull_0deg(idtype):
g = dgl.graph(([0], [1]), idtype=idtype, device=F.ctx())
def _message(edges):
return {"m": edges.src["h"]}
def _reduce(nodes):
return {"x": nodes.data["h"] + F.sum(nodes.mailbox["m"], 1)}
def _apply(nodes):
return {"x": nodes.data["x"] * 2}
def _init2(shape, dtype, ctx, ids):
return 2 + F.zeros(shape, dtype, ctx)
g.set_n_initializer(_init2, "x")
# test#1: pull both 0deg and non-0deg nodes
old = F.randn((2, 5))
g.ndata["h"] = old
g.pull([0, 1], _message, _reduce, _apply)
new = g.ndata["x"]
# 0deg check: initialized with the func and got applied
assert F.allclose(new[0], F.full_1d(5, 4, dtype=F.float32))
# non-0deg check
assert F.allclose(new[1], F.sum(old, 0) * 2)
# test#2: pull only 0deg node
old = F.randn((2, 5))
g.ndata["h"] = old
g.pull(0, _message, _reduce, lambda nodes: {"h": nodes.data["h"] * 2})
new = g.ndata["h"]
# 0deg check: fallback to apply
assert F.allclose(new[0], 2 * old[0])
# non-0deg check: not touched
assert F.allclose(new[1], old[1])
def test_dynamic_addition():
N = 3
D = 1
g = DGLGraph()
g = g.to(F.ctx())
# Test node addition
g.add_nodes(N)
g.ndata.update({"h1": F.randn((N, D)), "h2": F.randn((N, D))})
g.add_nodes(3)
assert g.ndata["h1"].shape[0] == g.ndata["h2"].shape[0] == N + 3
# Test edge addition
g.add_edges(0, 1)
g.add_edges(1, 0)
g.edata.update({"h1": F.randn((2, D)), "h2": F.randn((2, D))})
assert g.edata["h1"].shape[0] == g.edata["h2"].shape[0] == 2
g.add_edges([0, 2], [2, 0])
g.edata["h1"] = F.randn((4, D))
assert g.edata["h1"].shape[0] == g.edata["h2"].shape[0] == 4
g.add_edges(1, 2)
g.edges[4].data["h1"] = F.randn((1, D))
assert g.edata["h1"].shape[0] == g.edata["h2"].shape[0] == 5
# test add edge with part of the features
g.add_edges(2, 1, {"h1": F.randn((1, D))})
assert len(g.edata["h1"]) == len(g.edata["h2"])
@parametrize_idtype
def test_repr(idtype):
g = dgl.graph(
([0, 0, 1], [1, 2, 2]), num_nodes=10, idtype=idtype, device=F.ctx()
)
repr_string = g.__repr__()
print(repr_string)
g.ndata["x"] = F.zeros((10, 5))
g.edata["y"] = F.zeros((3, 4))
repr_string = g.__repr__()
print(repr_string)
@parametrize_idtype
def test_local_var(idtype):
g = dgl.graph(([0, 1, 2, 3], [1, 2, 3, 4]), idtype=idtype, device=F.ctx())
g.ndata["h"] = F.zeros((g.num_nodes(), 3))
g.edata["w"] = F.zeros((g.num_edges(), 4))
# test override
def foo(g):
g = g.local_var()
g.ndata["h"] = F.ones((g.num_nodes(), 3))
g.edata["w"] = F.ones((g.num_edges(), 4))
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test out-place update
def foo(g):
g = g.local_var()
g.nodes[[2, 3]].data["h"] = F.ones((2, 3))
g.edges[[2, 3]].data["w"] = F.ones((2, 4))
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test out-place update 2
def foo(g):
g = g.local_var()
g.apply_nodes(lambda nodes: {"h": nodes.data["h"] + 10}, [2, 3])
g.apply_edges(lambda edges: {"w": edges.data["w"] + 10}, [2, 3])
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test auto-pop
def foo(g):
g = g.local_var()
g.ndata["hh"] = F.ones((g.num_nodes(), 3))
g.edata["ww"] = F.ones((g.num_edges(), 4))
foo(g)
assert "hh" not in g.ndata
assert "ww" not in g.edata
# test initializer1
g = dgl.graph(([0, 1], [1, 1]), idtype=idtype, device=F.ctx())
g.set_n_initializer(dgl.init.zero_initializer)
def foo(g):
g = g.local_var()
g.nodes[0].data["h"] = F.ones((1, 1))
assert F.allclose(g.ndata["h"], F.tensor([[1.0], [0.0]]))
foo(g)
# test initializer2
def foo_e_initializer(shape, dtype, ctx, id_range):
return F.ones(shape)
g.set_e_initializer(foo_e_initializer, field="h")
def foo(g):
g = g.local_var()
g.edges[0, 1].data["h"] = F.ones((1, 1))
assert F.allclose(g.edata["h"], F.ones((2, 1)))
g.edges[0, 1].data["w"] = F.ones((1, 1))
assert F.allclose(g.edata["w"], F.tensor([[1.0], [0.0]]))
foo(g)
@parametrize_idtype
def test_local_scope(idtype):
g = dgl.graph(([0, 1, 2, 3], [1, 2, 3, 4]), idtype=idtype, device=F.ctx())
g.ndata["h"] = F.zeros((g.num_nodes(), 3))
g.edata["w"] = F.zeros((g.num_edges(), 4))
# test override
def foo(g):
with g.local_scope():
g.ndata["h"] = F.ones((g.num_nodes(), 3))
g.edata["w"] = F.ones((g.num_edges(), 4))
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test out-place update
def foo(g):
with g.local_scope():
g.nodes[[2, 3]].data["h"] = F.ones((2, 3))
g.edges[[2, 3]].data["w"] = F.ones((2, 4))
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test out-place update 2
def foo(g):
with g.local_scope():
g.apply_nodes(lambda nodes: {"h": nodes.data["h"] + 10}, [2, 3])
g.apply_edges(lambda edges: {"w": edges.data["w"] + 10}, [2, 3])
foo(g)
assert F.allclose(g.ndata["h"], F.zeros((g.num_nodes(), 3)))
assert F.allclose(g.edata["w"], F.zeros((g.num_edges(), 4)))
# test auto-pop
def foo(g):
with g.local_scope():
g.ndata["hh"] = F.ones((g.num_nodes(), 3))
g.edata["ww"] = F.ones((g.num_edges(), 4))
foo(g)
assert "hh" not in g.ndata
assert "ww" not in g.edata
# test nested scope
def foo(g):
with g.local_scope():
g.ndata["hh"] = F.ones((g.num_nodes(), 3))
g.edata["ww"] = F.ones((g.num_edges(), 4))
with g.local_scope():
g.ndata["hhh"] = F.ones((g.num_nodes(), 3))
g.edata["www"] = F.ones((g.num_edges(), 4))
assert "hhh" not in g.ndata
assert "www" not in g.edata
foo(g)
assert "hh" not in g.ndata
assert "ww" not in g.edata
# test initializer1
g = dgl.graph(([0, 1], [1, 1]), idtype=idtype, device=F.ctx())
g.set_n_initializer(dgl.init.zero_initializer)
def foo(g):
with g.local_scope():
g.nodes[0].data["h"] = F.ones((1, 1))
assert F.allclose(g.ndata["h"], F.tensor([[1.0], [0.0]]))
foo(g)
# test initializer2
def foo_e_initializer(shape, dtype, ctx, id_range):
return F.ones(shape)
g.set_e_initializer(foo_e_initializer, field="h")
def foo(g):
with g.local_scope():
g.edges[0, 1].data["h"] = F.ones((1, 1))
assert F.allclose(g.edata["h"], F.ones((2, 1)))
g.edges[0, 1].data["w"] = F.ones((1, 1))
assert F.allclose(g.edata["w"], F.tensor([[1.0], [0.0]]))
foo(g)
@parametrize_idtype
def test_isolated_nodes(idtype):
g = dgl.graph(([0, 1], [1, 2]), num_nodes=5, idtype=idtype, device=F.ctx())
assert g.num_nodes() == 5
g = dgl.heterograph(
{("user", "plays", "game"): ([0, 0, 1], [2, 3, 2])},
{"user": 5, "game": 7},
idtype=idtype,
device=F.ctx(),
)
assert g.idtype == idtype
assert g.num_nodes("user") == 5
assert g.num_nodes("game") == 7
# Test backward compatibility
g = dgl.heterograph(
{("user", "plays", "game"): ([0, 0, 1], [2, 3, 2])},
{"user": 5, "game": 7},
idtype=idtype,
device=F.ctx(),
)
assert g.idtype == idtype
assert g.num_nodes("user") == 5
assert g.num_nodes("game") == 7
@parametrize_idtype
def test_send_multigraph(idtype):
g = dgl.graph(([0, 0, 0, 2], [1, 1, 1, 1]), idtype=idtype, device=F.ctx())
def _message_a(edges):
return {"a": edges.data["a"]}
def _message_b(edges):
return {"a": edges.data["a"] * 3}
def _reduce(nodes):
return {"a": F.max(nodes.mailbox["a"], 1)}
def answer(*args):
return F.max(F.stack(args, 0), 0)
assert g.is_multigraph
# send by eid
old_repr = F.randn((4, 5))
# send_and_recv_on
g.ndata["a"] = F.zeros((3, 5))
g.edata["a"] = old_repr
g.send_and_recv([0, 2, 3], message_func=_message_a, reduce_func=_reduce)
new_repr = g.ndata["a"]
assert F.allclose(
new_repr[1], answer(old_repr[0], old_repr[2], old_repr[3])
)
assert F.allclose(new_repr[[0, 2]], F.zeros((2, 5)))
@parametrize_idtype
def test_issue_1088(idtype):
# This test ensures that message passing on a heterograph with one edge type
# would not crash (GitHub issue #1088).
import dgl.function as fn
g = dgl.heterograph(
{("U", "E", "V"): ([0, 1, 2], [1, 2, 3])}, idtype=idtype, device=F.ctx()
)
g.nodes["U"].data["x"] = F.randn((3, 3))
g.update_all(fn.copy_u("x", "m"), fn.sum("m", "y"))
@parametrize_idtype
def test_degree_bucket_edge_ordering(idtype):
import dgl.function as fn
g = dgl.graph(
([1, 3, 5, 0, 4, 2, 3, 3, 4, 5], [1, 1, 0, 0, 1, 2, 2, 0, 3, 3]),
idtype=idtype,
device=F.ctx(),
)
g.edata["eid"] = F.copy_to(F.arange(0, 10), F.ctx())
def reducer(nodes):
eid = F.asnumpy(F.copy_to(nodes.mailbox["eid"], F.cpu()))
assert np.array_equal(eid, np.sort(eid, 1))
return {"n": F.sum(nodes.mailbox["eid"], 1)}
g.update_all(fn.copy_e("eid", "eid"), reducer)
@parametrize_idtype
def test_issue_2484(idtype):
import dgl.function as fn
g = dgl.graph(([0, 1, 2], [1, 2, 3]), idtype=idtype, device=F.ctx())
x = F.copy_to(F.randn((4,)), F.ctx())
g.ndata["x"] = x
g.pull([2, 1], fn.u_add_v("x", "x", "m"), fn.sum("m", "x"))
y1 = g.ndata["x"]
g.ndata["x"] = x
g.pull([1, 2], fn.u_add_v("x", "x", "m"), fn.sum("m", "x"))
y2 = g.ndata["x"]
assert F.allclose(y1, y2)