I'm getting a strange error when executing the command starmass = ell.quantities['TotalQuantity']('StarMassMsun')[0] This is on Stampede, and on my laptop running OSX I did not get the same error. Has anyone else seen something similar? From G.S. In [100]: ell.quantities['TotalQuantity']('StarMassMsun') --------------------------------------------------------------------------- ValueError Traceback (most recent call last) /home1/01041/tg802953/dev-yt/src/yt-hg/scripts/iyt in <module>() ----> 1 ell.quantities['TotalQuantity']('StarMassMsun') /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/derived_quantities.pyc in __call__(self, *args, **kwargs) 80 self._data_source.pf.h.io) 81 if lazy_reader and not self.force_unlazy: ---> 82 return self._call_func_lazy(args, kwargs) 83 else: 84 return self._call_func_unlazy(args, kwargs) /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/derived_quantities.pyc in _call_func_lazy(self, args, kwargs) 87 self.retvals = [ [] for i in range(self.n_ret)] 88 for gi,g in enumerate(self._get_grids()): ---> 89 rv = self.func(GridChildMaskWrapper(g, self._data_source), *args, **kwargs) 90 if not iterable(rv): rv = (rv,) 91 for i in range(self.n_ret): self.retvals[i].append(rv[i]) /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/derived_quantities.pyc in _TotalQuantity(data, fields) 703 totals = [] 704 for field in fields: --> 705 if data[field].size < 1: 706 totals.append(0.0) 707 continue /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/derived_quantities.pyc in __getitem__(self, item) 48 def __getitem__(self, item): 49 if item not in self.local_cache: ---> 50 data = self.data_source._get_data_from_grid(self.grid, item) 51 self.local_cache[item] = data 52 return self.local_cache[item] /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/data_containers.pyc in save_state(self, grid, field, *args, **kwargs) 79 old_keys = grid.field_data.keys() 80 grid.field_parameters = self.field_parameters ---> 81 tr = func(self, grid, field, *args, **kwargs) 82 grid.field_parameters = old_params 83 grid.field_data = YTFieldData( [(k, grid.field_data[k]) for k in old_keys] ) /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/data_containers.pyc in _get_data_from_grid(self, grid, field) 2644 return np.array([f[i,:][pointI] for i in range(3)]) 2645 else: -> 2646 tr = grid[field] 2647 if tr.size == 1: # dx, dy, dz, cellvolume 2648 tr = tr * np.ones(grid.ActiveDimensions, dtype='float64') /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in __getitem__(self, key) 145 """ 146 if key not in self.field_data: --> 147 self.get_data(key) 148 return self.field_data[key] 149 /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in get_data(self, field, convert) 188 else: raise 189 else: --> 190 self._generate_field(field) 191 return self.field_data[field] 192 /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in _generate_field(self, field) 133 self[field] = temp_array[sl] 134 else: --> 135 self[field] = self.pf.field_info[field](self) 136 else: # Can't find the field, try as it might 137 raise exceptions.KeyError(field) /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/field_info_container.pyc in __call__(self, data) 383 ii = self.check_available(data) 384 original_fields = data.keys() # Copy --> 385 dd = self._function(self, data) 386 dd *= self._convert_function(data) 387 for field_name in data.keys(): /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/universal_fields.pyc in _StarMass(field, data) 439 440 def _StarMass(field,data): --> 441 return data["star_density"] * data["CellVolume"] 442 add_field("StarMassMsun", units=r"M_{\odot}", 443 function=_StarMass, /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in __getitem__(self, key) 145 """ 146 if key not in self.field_data: --> 147 self.get_data(key) 148 return self.field_data[key] 149 /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in get_data(self, field, convert) 188 else: raise 189 else: --> 190 self._generate_field(field) 191 return self.field_data[field] 192 /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/grid_patch.pyc in _generate_field(self, field) 133 self[field] = temp_array[sl] 134 else: --> 135 self[field] = self.pf.field_info[field](self) 136 else: # Can't find the field, try as it might 137 raise exceptions.KeyError(field) /home1/01041/tg802953/dev-yt/src/yt-hg/yt/data_objects/field_info_container.pyc in __call__(self, data) 383 ii = self.check_available(data) 384 original_fields = data.keys() # Copy --> 385 dd = self._function(self, data) 386 dd *= self._convert_function(data) 387 for field_name in data.keys(): /home1/01041/tg802953/dev-yt/src/yt-hg/yt/frontends/enzo/fields.pyc in _spdensity(field, data) 360 blank, np.array(data.LeftEdge).astype(np.float64), 361 np.array(data.ActiveDimensions).astype(np.int32), --> 362 np.float64(data['dx'])) 363 return blank 364 /home1/01041/tg802953/dev-yt/src/yt-hg/yt/utilities/lib/CICDeposit.so in yt.utilities.lib.CICDeposit.CICDeposit_3 (yt/utilities/lib/CICDeposit.c:1643)() ValueError: Buffer dtype mismatch, expected 'float64_t' but got 'float'