Reduce Auto3DSeg tests memory footprint and running time

[mingxin-zheng]

Signed-off-by: Mingxin Zheng 18563433+mingxin-zheng@users.noreply.github.com

Fixes #5604

also fixes #5697 by 5b1865e

Description

• Update the Auto3DSeg templates
  • SwinUNETR optionally uses pretrain weights
  • Fix bug when multiple GPUs are used in a tiny datasets, step_size will be zero.
• Change image size in the test dataset from (64, 64, 64) to (24, 24, 24)
• Change num_epochs from 2 to 1
• Remove an unnecessary unit test in test_auto3dseg_hpo (check the algorithm can run in another folder, which is not very useful and may bring bugs in the future).

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.

[wyli]

/integration-test

[wyli]

/build

tests

[mingxin-zheng]

/integration-test

[wyli]

/build

[mingxin-zheng]

The test quick-py3 (macOS-latest) gives the following error:

======================================================================
FAIL: test_sampling (tests.test_weighted_random_sampler_dist.DistributedWeightedRandomSamplerTest)

Traceback (most recent call last):
File "/Users/runner/work/MONAI/MONAI/tests/utils.py", line 521, in _wrapper
assert results.get(), "Distributed call failed."
AssertionError: Distributed call failed.

---

Ran 9971 tests in 3399.369s

FAILED (failures=1, skipped=896)

[wyli]

/build

[wyli]

/build