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Potential performance degradations
**********************************

You might experience performance degradations if you use Lever Zero Runtime for GPU computations.

.. include:: includes/note-refer-to-dpcpp-level-zero.rst

How to Fix
----------

Switch back to OpenCL runtime by setting the ``SYCL_BE`` variable to ``PI_OPENCL``:

.. code-block:: bash

    export SYCL_BE=PI_OPENCL