Numba: AssertionError: Failed at object (analyzing bytecode)

[ebonat]

Hi,

I run the sample code from the site as:

@jit
def sum2(two_dimensional_array):    
    result = 0.0
    J, I = two_dimensional_array.shape    
    for i in range(J):
        for j in range(I):
            result += two_dimensional_array[i,j]    
    return result

When I add the try-catch error handling as:

@jit
def sum1(two_dimensional_array):
    result = 0.0
    try:
        J, I = two_dimensional_array.shape    
        for i in range(J):
            for j in range(I):
                result += two_dimensional_array[i,j]    
    except Exception:
        pass
    return result

I got an error as:

  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\dispatcher.py", line 287, in _compile_for_args
    return self.compile(tuple(argtypes))
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\dispatcher.py", line 555, in compile
    cres = self._compiler.compile(args, return_type)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\dispatcher.py", line 81, in compile
    flags=flags, locals=self.locals)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 699, in compile_extra
    return pipeline.compile_extra(func)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 352, in compile_extra
    return self._compile_bytecode()
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 660, in _compile_bytecode
    return self._compile_core()
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 647, in _compile_core
    res = pm.run(self.status)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 238, in run
    raise patched_exception
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 230, in run
    stage()
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 366, in stage_analyze_bytecode
    func_ir = translate_stage(self.func_id, self.bc)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\compiler.py", line 762, in translate_stage
    return interp.interpret(bytecode)
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\interpreter.py", line 91, in interpret
    self.cfa.run()
  File "C:\Users\Ernest\AppData\Local\Continuum\lib\site-packages\numba\controlflow.py", line 515, in run
    assert not inst.is_jump, inst
AssertionError: Failed at object (analyzing bytecode)
SETUP_EXCEPT(arg=85, lineno=14)

Any help?

Thank you!

[sklam]

Try-catch is not supported.

[ebonat]

In this case, we can't use it at this time. Very bad for Python programmers!

[sklam]

Exceptions can still be raised and they get propagated all the way up. You can still catch them in the non-jit function.

Our current focus is in high-performance numeric code, such code rarely needs to catch exceptions. On the other hand, the catch semantic can affect the optimizations, disabling auto-vectorization and other aggressive loop transformation.