add gc collect statement

mlair/helpers/filter.py

@@ -101,6 +101,7 @@ class ClimateFIRFilter:
                                           var_dim=var_dim, plot_index=i, padlen_factor=padlen_factor)
             filtered.append(fi)
             h.append(hi)
+            gc.collect()
 
             # calculate residuum
             input_data = input_data - fi
@@ -396,7 +397,7 @@ class ClimateFIRFilter:
             #     filt = xr.apply_ufunc(fir_filter_vectorized, filter_input_data, time_axis,
             #                           input_core_dims=[[new_dim], []], output_core_dims=[[new_dim]], vectorize=True,
             #                           kwargs=kwargs)
-            with TimeTracking(name="convolve"):
+            # with TimeTracking(name="convolve"):
             slicer = slice(int(-(length - 1) / 2), int((length - 1) / 2))
             filt = xr.apply_ufunc(fir_filter_convolve_vectorized, filter_input_data.sel({new_dim: slicer}),
                                   input_core_dims=[[new_dim]],