Making large AI models cheaper, faster and more accessible
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import pytest
from colossalai.device import AlphaBetaProfiler
from colossalai.initialize import launch
from colossalai.logging import disable_existing_loggers
from colossalai.testing import parameterize, rerun_if_address_is_in_use, spawn
def check_alpha_beta(rank, world_size, port, physical_devices):
disable_existing_loggers()
launch(config={}, rank=rank, world_size=world_size, host="localhost", port=port, backend="nccl")
profiler = AlphaBetaProfiler(physical_devices)
ab_dict = profiler.profile_ab()
for _, (alpha, beta) in ab_dict.items():
assert alpha > 0 and alpha < 1e-4 and beta > 0 and beta < 1e-10
@pytest.mark.skip(reason="Skip because assertion fails for CI devices")
@pytest.mark.dist
@parameterize("physical_devices", [[0, 1, 2, 3], [0, 3]])
@rerun_if_address_is_in_use()
def test_profile_alpha_beta(physical_devices):
spawn(check_alpha_beta, 4, physical_devices=physical_devices)
if __name__ == "__main__":
test_profile_alpha_beta()