Piotr Ponikowski focused on stabilizing autograd-related tests in the intel/torch-xpu-ops repository, addressing a persistent AttributeError in the TestExpandedWeightModuleXPU suite. He resolved the issue by ensuring input tensors were cloned within test cases, preventing autograd state leakage across tests and improving test isolation. This approach enhanced the determinism and reliability of continuous integration runs. Working primarily with Python and leveraging PyTorch’s autograd and unit testing frameworks, Piotr’s targeted fix eliminated non-leaf tensor issues and improved traceability by linking the solution to related issues and commits. His work demonstrated careful attention to test reliability and CI stability.