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13 changes: 11 additions & 2 deletions test/_utils_internal.py
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
import os

import os.path
import sys
import time
import unittest
import warnings
Expand Down Expand Up @@ -42,12 +43,17 @@
ToTensorImage,
TransformedEnv,
)
from torchrl.modules import MLP
from torchrl.objectives.value.advantages import _vmap_func

# Specified for test_utils.py
__version__ = "0.3"

from torchrl.modules import MLP
IS_WIN = sys.platform == "win32"
if IS_WIN:
mp_ctx = "spawn"
else:
mp_ctx = "fork"


def CARTPOLE_VERSIONED():
Expand Down Expand Up @@ -265,6 +271,7 @@ def _make_envs(
N,
device="cpu",
kwargs=None,
local_mp_ctx=mp_ctx,
):
torch.manual_seed(0)
if not transformed_in:
Expand Down Expand Up @@ -299,7 +306,9 @@ def create_env_fn():
)

env0 = create_env_fn()
env_parallel = ParallelEnv(N, create_env_fn, create_env_kwargs=kwargs)
env_parallel = ParallelEnv(
N, create_env_fn, create_env_kwargs=kwargs, mp_start_method=local_mp_ctx
)
env_serial = SerialEnv(N, create_env_fn, create_env_kwargs=kwargs)

for key in env0.observation_spec.keys(True, True):
Expand Down
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