number of trajectories are zero #53
Description
In running distributed ensembles and subsequently a mean caclulation, I keep getting this error.
MolnsUtilException Traceback (most recent call last)
in ()
11 # Phase 2 - read all the realizations and compute the mean value
12 tic = time.time()
---> 13 res = ensemble.mean(mapper=g)
14 wall_time_2 = time.time()-tic
15 wall_time_strong_phase2.append(wall_time_2)
/usr/local/lib/python2.7/dist-packages/molnsutil-0.8-py2.7.egg/molnsutil/molnsutil.pyc in mean(self, mapper, number_of_trajectories, chunk_size, verbose, store_realizations, storage_mode, cache_results)
1027 """ Compute the mean of the function g(X) based on number_of_trajectories realizations
1028 in the ensemble. It has to make sense to say g(result1)+g(result2). """
-> 1029 return self.run(mapper=mapper, aggregator=builtin_aggregator_add, reducer=builtin_reducer_mean, number_of_trajectories=number_of_trajectories, chunk_size=chunk_size, verbose=verbose, store_realizations=store_realizations, storage_mode=storage_mode, cache_results=cache_results)
1030
1031
/usr/local/lib/python2.7/dist-packages/molnsutil-0.8-py2.7.egg/molnsutil/molnsutil.pyc in run(self, mapper, aggregator, reducer, number_of_trajectories, chunk_size, verbose, progress_bar, store_realizations, storage_mode, cache_results)
749 raise MolnsUtilException("Storage mode already set to {0}, can not mix storage modes".format(self.storage_mode))
750 if number_of_trajectories is None or number_of_trajectories == 0:
--> 751 raise MolnsUtilException("'number_of_trajectories' is zero.")
752 elif not store_realizations and self.number_of_trajectories > 0 and self.number_of_trajectories != number_of_trajectories:
753 raise MolnsUtilException("'number_of_trajectories' changed since first call. Value can only be changed if store_realizations is True")
MolnsUtilException: 'number_of_trajectories' is zero.