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Compatible with older versions of Python and Torch #469

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Merged
merged 2 commits into from
Oct 29, 2025
Merged

Compatible with older versions of Python and Torch #469

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Compatible with older versions of python and torch
sphish Oct 29, 2025
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sphish Oct 29, 2025
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3 changes: 2 additions & 1 deletion csrc/deep_ep.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1765,5 +1765,6 @@ PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
.def("get_next_low_latency_combine_buffer", &deep_ep::Buffer::get_next_low_latency_combine_buffer);

m.def("is_sm90_compiled", deep_ep::is_sm90_compiled);
m.attr("topk_idx_t") = py::cast(c10::CppTypeToScalarType<deep_ep::topk_idx_t>::value);
m.attr("topk_idx_t") =
py::reinterpret_borrow<py::object>((PyObject*)torch::getTHPDtype(c10::CppTypeToScalarType<deep_ep::topk_idx_t>::value));
}
6 changes: 3 additions & 3 deletions tests/test_low_latency.py
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Expand Up @@ -3,13 +3,13 @@
import torch
import torch.distributed as dist
from functools import partial
from typing import Literal
from typing import Literal, Set

import deep_ep
from utils import init_dist, bench, bench_kineto, calc_diff, hash_tensor, per_token_cast_back


def simulate_failure_and_skip(rank: int, api: Literal["dispatch", "combine", "clean"], expected_masked_ranks: set[int]):
def simulate_failure_and_skip(rank: int, api: Literal["dispatch", "combine", "clean"], expected_masked_ranks: Set[int]):
# Simulates rank failure when the rank first calls the corresponding communication API
failed_api_ranks = {
# API -> rank to fail (rank fails when it first calls the corresponding communication API)
Expand All @@ -29,7 +29,7 @@ def simulate_failure_and_skip(rank: int, api: Literal["dispatch", "combine", "cl


def query_mask_buffer_and_check(api: Literal["dispatch", "combine", "clean"], buffer: deep_ep.Buffer, mask_status: torch.Tensor,
expected_masked_ranks: set[int]):
expected_masked_ranks: Set[int]):
buffer.low_latency_query_mask_buffer(mask_status)
assert set(mask_status.nonzero().squeeze(-1).tolist()) == expected_masked_ranks

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