Error running Poiseuille.py example using loopy backend

[ma-sadeghi]

Here's the detailed error message:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pytools/__init__.py in wrapper(obj, *args, **kwargs)
    681         try:
--> 682             return getattr(obj, cache_dict_name)[key]
    683         except AttributeError:

AttributeError: 'PyOpenCLKernelExecutor' object has no attribute '_memoize_dic_kernel_info'

During handling of the above exception, another exception occurred:

VariableAccessNotOrdered                  Traceback (most recent call last)
<ipython-input-3-3589f98fdfb9> in <module>
      2 Tf = 10.0
      3 
----> 4 sol = run(dx, Tf, generator="loopy")
      5 
      6 u = sol.m[ux]

<ipython-input-2-c4f5705253d0> in run(dx, Tf, generator, sorder, with_plot)
    118         if itr % 500 == 0:
    119             print(f"Iteration #: {itr:3}")
--> 120         sol.one_time_step()
    121     toc()
    122 

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/monitoring.py in wrapper(*args, **kwds)
    119         Monitor.register(f)
    120         Monitor.start_timing(f)
--> 121         output = f(*args, **kwds)
    122         Monitor.stop_timing(f)
    123         return output

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/simulation.py in one_time_step(self, **kwargs)
    370         self._update_m = True # we recompute f so m will be not correct
    371 
--> 372         self.boundary_condition(**kwargs)
    373 
    374         self.algo.call_function('one_time_step', self, **kwargs)

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/monitoring.py in wrapper(*args, **kwds)
    119         Monitor.register(f)
    120         Monitor.start_timing(f)
--> 121         output = f(*args, **kwds)
    122         Monitor.stop_timing(f)
    123         return output

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/simulation.py in boundary_condition(self)
    346         """
    347         f = self.container.F
--> 348         f.update()
    349 
    350         for method in self.bc.methods:

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/monitoring.py in wrapper(*args, **kwds)
    119         Monitor.register(f)
    120         Monitor.start_timing(f)
--> 121         output = f(*args, **kwds)
    122         Monitor.stop_timing(f)
    123         return output

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/storage.py in update(self)
    291 
    292             args = locals()
--> 293             call_genfunction(self.generator.module.update_x, args)
    294 
    295             if dim > 1:

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/symbolic.py in call_genfunction(function, args)
    255         func_args = getargspec(function).args
    256         d = {k:args[k] for k in func_args} #pylint: disable=invalid-name
--> 257     monitor(function)(**d)

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pylbm/monitoring.py in wrapper(*args, **kwds)
    119         Monitor.register(f)
    120         Monitor.start_timing(f)
--> 121         output = f(*args, **kwds)
    122         Monitor.stop_timing(f)
    123         return output

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/kernel/__init__.py in __call__(self, *args, **kwargs)
   1448             self._kernel_executor_cache[key] = kex
   1449 
-> 1450         return kex(*args, **kwargs)
   1451 
   1452     # }}}

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/target/pyopencl_execution.py in __call__(self, queue, **kwargs)
    356         kwargs = self.packing_controller.unpack(kwargs)
    357 
--> 358         kernel_info = self.kernel_info(self.arg_to_dtype_set(kwargs))
    359 
    360         return kernel_info.invoker(

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/pytools/__init__.py in wrapper(obj, *args, **kwargs)
    682             return getattr(obj, cache_dict_name)[key]
    683         except AttributeError:
--> 684             result = function(obj, *args, **kwargs)
    685             setattr(obj, cache_dict_name, {key: result})
    686             return result

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/target/pyopencl_execution.py in kernel_info(self, arg_to_dtype_set, all_kwargs)
    284     @memoize_method
    285     def kernel_info(self, arg_to_dtype_set=frozenset(), all_kwargs=None):
--> 286         kernel = self.get_typed_and_scheduled_kernel(arg_to_dtype_set)
    287 
    288         from loopy.codegen import generate_code_v2

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/target/execution.py in get_typed_and_scheduled_kernel(self, arg_to_dtype_set)
    779         logger.debug("%s: typed-and-scheduled cache miss" % self.kernel.name)
    780 
--> 781         kernel = self.get_typed_and_scheduled_kernel_uncached(arg_to_dtype_set)
    782 
    783         if CACHING_ENABLED:

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/target/execution.py in get_typed_and_scheduled_kernel_uncached(self, arg_to_dtype_set)
    758 
    759             from loopy.schedule import get_one_scheduled_kernel
--> 760             kernel = get_one_scheduled_kernel(kernel)
    761 
    762         return kernel

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/schedule/__init__.py in get_one_scheduled_kernel(kernel)
   2141         "Use get_one_linearized_kernel instead.",
   2142         DeprecationWarning)
-> 2143     return get_one_linearized_kernel(kernel)
   2144 
   2145 

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/schedule/__init__.py in get_one_linearized_kernel(kernel)
   2162         with ProcessLogger(logger, "%s: schedule" % kernel.name):
   2163             with MinRecursionLimitForScheduling(kernel):
-> 2164                 result = _get_one_scheduled_kernel_inner(kernel)
   2165 
   2166     if CACHING_ENABLED and not from_cache:

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/schedule/__init__.py in _get_one_scheduled_kernel_inner(kernel)
   2132     # See https://gitlab.tiker.net/inducer/sumpy/issues/31 for context.
   2133 
-> 2134     return next(iter(generate_loop_schedules(kernel)))
   2135 
   2136 

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/schedule/__init__.py in generate_loop_schedules(kernel, debug_args)
   1943 
   1944     with MinRecursionLimitForScheduling(kernel):
-> 1945         yield from generate_loop_schedules_inner(kernel, debug_args=debug_args)
   1946 
   1947 

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/schedule/__init__.py in generate_loop_schedules_inner(kernel, debug_args)
   1953 
   1954     from loopy.check import pre_schedule_checks
-> 1955     pre_schedule_checks(kernel)
   1956 
   1957     schedule_count = 0

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/check.py in pre_schedule_checks(kernel)
    820         check_write_destinations(kernel)
    821         check_has_schedulable_iname_nesting(kernel)
--> 822         check_variable_access_ordered(kernel)
    823 
    824         logger.debug("%s: pre-schedule check: done" % kernel.name)

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/check.py in check_variable_access_ordered(kernel)
    788     with ProcessLogger(logger, "%s: check variable access ordered" % kernel.name):
    789         if kernel.options.enforce_variable_access_ordered:
--> 790             _check_variable_access_ordered_inner(kernel)
    791         else:
    792             from loopy.diagnostic import VariableAccessNotOrdered

/opt/anaconda3/envs/pmeal/lib/python3.7/site-packages/loopy/check.py in _check_variable_access_ordered_inner(kernel)
    760 
    761             from loopy.diagnostic import VariableAccessNotOrdered
--> 762             raise VariableAccessNotOrdered(msg)
    763 
    764     # }}}

VariableAccessNotOrdered: No dependency relationship found between 'inst_0' which writes the variable 'f' and 'inst_0_0' which also accesses the variable 'f'. Either add a (possibly indirect) dependency between the two, or add them to each others' nosync set to indicate that no ordering is intended, or turn off this check by setting the 'enforce_variable_access_ordered' option (more issues of this type may exist--only reporting the first one)

[gouarin]

Thanks for this report.

pylbm must be updated according to the changes made in loopy.