def test_asscoicated_with_p(self):
size = bf.size()
rank = bf.rank()
if size <= 3:
fname = inspect.currentframe().f_code.co_name
warnings.warn(
"Skip {} because it only supports test over at least 3 nodes".
format(fname))
return
dtypes = [torch.FloatTensor, torch.DoubleTensor]
if TEST_ON_GPU and not bf.nccl_built():
dtypes += [torch.cuda.FloatTensor, torch.cuda.DoubleTensor]
bf.set_topology(topology_util.RingGraph(size))
bf.turn_on_win_ops_with_associated_p()
for dtype, send_rank in itertools.product(dtypes, range(size)):
tensor = torch.FloatTensor([23]).fill_(1).mul_(rank)
tensor = self.cast_and_place(tensor, dtype)
window_name = "win_asscoicate_with_p_{}_{}".format(
dtype, send_rank)
bf.win_create(tensor, window_name)
left_neighbor_rank = (send_rank - 1) % size
right_neighbor_rank = (send_rank + 1) % size
if rank == send_rank:
bf.win_accumulate(tensor,
name=window_name,
self_weight=0.5,
dst_weights={
left_neighbor_rank: 0.5,
right_neighbor_rank: 0.5
})
bf.barrier()
bf.win_update_then_collect(name=window_name)
associated_p = bf.win_associated_p(name=window_name)
if rank == send_rank:
assert associated_p == 0.5, (
"associated_p for sender {} is wrong. Get {}".format(
rank, associated_p))
elif (rank == left_neighbor_rank) or (rank == right_neighbor_rank):
assert (associated_p - 1.5) < EPSILON, (
"associated_p for received neighbor {} is wrong. Get {}".
format(rank, associated_p))
else:
assert associated_p == 1.0, (
"associated_p for untouched node {} is wrong. Get {}".
format(rank, associated_p))
bf.turn_off_win_ops_with_associated_p()
def test_asscoicated_with_p_random_test(self):
size = bf.size()
rank = bf.rank()
dtypes = [torch.FloatTensor, torch.DoubleTensor]
# Current, nccl version hasn't supported the associated with p yet.
if TEST_ON_GPU and not bf.nccl_built():
dtypes += [torch.cuda.FloatTensor, torch.cuda.DoubleTensor]
dims = [1]
bf.turn_on_win_ops_with_associated_p()
for dtype, dim in itertools.product(dtypes, dims):
tensor = torch.FloatTensor(*([23] * dim)).fill_(1)
tensor = self.cast_and_place(tensor, dtype)
window_name = "win_asscoicate_with_p_random_{}_{}".format(
dim, dtype)
bf.win_create(tensor, window_name, zero_init=True)
for _ in range(10):
random_weights = np.random.rand(
len(bf.out_neighbor_ranks()) + 1)
random_weights /= random_weights.sum()
self_weight = random_weights[-1]
dst_weights = {
r: random_weights[i]
for i, r in enumerate(bf.out_neighbor_ranks())
}
bf.win_put(tensor,
self_weight=self_weight,
dst_weights=dst_weights,
name=window_name,
require_mutex=True)
bf.win_update(name=window_name, require_mutex=True)
bf.win_accumulate(tensor,
name=window_name,
require_mutex=True,
self_weight=self_weight,
dst_weights=dst_weights)
bf.win_update_then_collect(name=window_name)
bf.barrier()
bf.win_update_then_collect(name=window_name)
associated_p = bf.win_associated_p(name=window_name)
# Because the associated p should operate the same as tensor always
# the following assert should be true no matter what order is excuted.
assert abs(associated_p - tensor.data[0]) < EPSILON
bf.turn_off_win_ops_with_associated_p()
dst_weights = {sent_neighbor: 0.5}
self_weight = 0.5
else:
dst_weights = {
rank: 1.0 / (outdegree + 1)
for rank in bf.out_neighbor_ranks()
}
self_weight = 1 / (1 + outdegree)
bf.win_accumulate(x,
name="x",
self_weight=self_weight,
dst_weights=dst_weights,
require_mutex=True)
bf.win_update_then_collect(name="x")
associated_p = bf.win_associated_p(name="x")
mse.append(
torch.norm(x / associated_p - x_bar, p=2) /
torch.norm(x_bar, p=2))
# Do not forget to sync at last!
bf.barrier()
bf.win_update_then_collect(name="x")
associated_p = bf.win_associated_p(name="x")
print(f"associated p at {bf.rank()} is {associated_p}")
bf.turn_off_win_ops_with_associated_p()
mse.append(
torch.norm(x / associated_p - x_bar, p=2) / torch.norm(x_bar, p=2))
bf.win_free(name="x")
else:
p = torch.DoubleTensor([1.0]).to(x.device)