asc.experimental.asctile.device_assert

asc.experimental.asctile.device_assert(test: Any, message: str | None = None) → None

Check a condition during kernel execution on the device.

If the condition is false, prints an error message with source location and stops execution.

Parameters:

  • test – Condition to check (boolean, comparison, or value convertible to bool).

  • message – Optional error message to include in the report.

Note

Only active when debug=True is set in the JIT decorator. The built-in assert statement dispatches to this function inside JIT kernels.

Examples

Assert that the block index is non-negative:

@asctile.jit(debug=True)
def kernel():
    asctile.device_assert(asctile.block_idx() >= 0, "block_idx must be non-negative")