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dmlc--dgl/tests/cugraph/cugraph-ops/test_cugraph_relgraphconv.py
2026-07-13 13:35:51 +08:00

78 lines
2.2 KiB
Python

# pylint: disable=too-many-arguments, too-many-locals
from collections import OrderedDict
from itertools import product
import dgl
import pytest
import torch
from dgl.nn import CuGraphRelGraphConv, RelGraphConv
# TODO(tingyu66): Re-enable the following tests after updating cuGraph CI image.
options = OrderedDict(
{
"idtype_int": [False, True],
"max_in_degree": [None, 8],
"num_bases": [1, 2, 5],
"regularizer": [None, "basis"],
"self_loop": [False, True],
"to_block": [False, True],
}
)
def generate_graph():
u = torch.tensor([0, 1, 0, 2, 3, 0, 4, 0, 5, 0, 6, 7, 0, 8, 9])
v = torch.tensor([1, 9, 2, 9, 9, 4, 9, 5, 9, 6, 9, 9, 8, 9, 0])
g = dgl.graph((u, v))
return g
@pytest.mark.parametrize(",".join(options.keys()), product(*options.values()))
def test_relgraphconv_equality(
idtype_int, max_in_degree, num_bases, regularizer, self_loop, to_block
):
device = "cuda:0"
in_feat, out_feat, num_rels = 10, 2, 3
args = (in_feat, out_feat, num_rels)
kwargs = {
"num_bases": num_bases,
"regularizer": regularizer,
"bias": False,
"self_loop": self_loop,
}
g = generate_graph().to(device)
g.edata[dgl.ETYPE] = torch.randint(num_rels, (g.num_edges(),)).to(device)
if idtype_int:
g = g.int()
if to_block:
g = dgl.to_block(g)
feat = torch.rand(g.num_src_nodes(), in_feat).to(device)
torch.manual_seed(0)
conv1 = RelGraphConv(*args, **kwargs).to(device)
torch.manual_seed(0)
kwargs["apply_norm"] = False
conv2 = CuGraphRelGraphConv(*args, **kwargs).to(device)
out1 = conv1(g, feat, g.edata[dgl.ETYPE])
out2 = conv2(g, feat, g.edata[dgl.ETYPE], max_in_degree=max_in_degree)
assert torch.allclose(out1, out2, atol=1e-06)
grad_out = torch.rand_like(out1)
out1.backward(grad_out)
out2.backward(grad_out)
end = -1 if self_loop else None
assert torch.allclose(conv1.linear_r.W.grad, conv2.W.grad[:end], atol=1e-6)
if self_loop:
assert torch.allclose(
conv1.loop_weight.grad, conv2.W.grad[-1], atol=1e-6
)
if regularizer is not None:
assert torch.allclose(
conv1.linear_r.coeff.grad, conv2.coeff.grad, atol=1e-6
)