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							40 lines
						
					
					
						
							1.7 KiB
						
					
					
				| from __future__ import print_function | |
|  | |
| import time | |
| from netCDF4 import Dataset | |
| from wrf import getvar, ALL_TIMES, extract_vars | |
|  | |
| wrf_filenames = ["/Users/ladwig/Documents/wrf_files/wrf_vortex_multi/" | |
|                  "moving_nest/wrfout_d02_2005-08-28_00:00:00", | |
|                  "/Users/ladwig/Documents/wrf_files/wrf_vortex_multi/" | |
|                  "moving_nest/wrfout_d02_2005-08-28_12:00:00", | |
|                  "/Users/ladwig/Documents/wrf_files/wrf_vortex_multi/" | |
|                  "moving_nest/wrfout_d02_2005-08-29_00:00:00"] | |
|  | |
| wrfin = [Dataset(x) for x in wrf_filenames] | |
|  | |
| my_cache = extract_vars(wrfin, ALL_TIMES, | |
|                         ("P", "PB", "PH", "PHB", "T", "QVAPOR", "HGT", "U", | |
|                          "V", "W", "PSFC")) | |
|  | |
| start = time.time() | |
| for var in ("avo", "eth", "cape_2d", "cape_3d", "ctt", "dbz", "mdbz", | |
|             "geopt", "helicity", "lat", "lon", "omg", "p", "pressure", | |
|             "pvo", "pw", "rh2", "rh", "slp", "ter", "td2", "td", "tc", | |
|             "theta", "tk", "tv", "twb", "updraft_helicity", "ua", "va", | |
|             "wa", "uvmet10", "uvmet", "z", "cfrac", "zstag", "geopt_stag"): | |
|     v = getvar(wrfin, var, ALL_TIMES) | |
| end = time.time() | |
|  | |
| print("Time taken without variable cache: ", (end-start)) | |
|  | |
| start = time.time() | |
| for var in ("avo", "eth",  "cape_2d", "cape_3d", "ctt", "dbz", "mdbz", | |
|             "geopt", "helicity", "lat", "lon", "omg", "p", "pressure", | |
|             "pvo", "pw", "rh2", "rh", "slp", "ter", "td2", "td", "tc", | |
|             "theta", "tk", "tv", "twb", "updraft_helicity", "ua", "va", | |
|             "wa", "uvmet10", "uvmet", "z", "cfrac", "zstag", "geopt_stag"): | |
|     v = getvar(wrfin, var, ALL_TIMES, cache=my_cache) | |
| end = time.time() | |
|  | |
| print("Time taken with variable cache: ", (end-start))
 | |
| 
 |