| Re: Very tricky NetCDF "bug" [message #82453] |
Fri, 14 December 2012 15:27 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Fab writes:
> Results:
>
> IDL> .FULL_RESET_SESSION
> IDL> print, !VERSION
> { x86_64 linux unix linux 8.2.1 Aug 20 2012 64 64}
> IDL> test_ncdf_strides
> % Compiled module: TEST_NCDF_STRIDES.
> % Loaded DLM: NCDF.
> Get var1 : 0.97150087
> Get var2 (STRIDE): 1.1921642
> Get var1 (STRIDE): 1.1618340
> Get var2 : 0.93627405
> IDL> test_ncdf_strides, /NETCDF4_FORMAT
> Get var1 : 0.54904699
> Get var2 (STRIDE): 4.4865382
> Get var1 (STRIDE): 4.4508131
> Get var2 : 0.53942299
> IDL> test_ncdf_strides, /NETCDF4_FORMAT
> Get var1 : 0.54891205
> Get var2 (STRIDE): 4.4209800
> Get var1 (STRIDE): 4.3824911
> Get var2 : 0.53269601
> IDL> test_ncdf_strides
> Get var1 : 0.96190310
> Get var2 (STRIDE): 1.1909840
> Get var1 (STRIDE): 1.1693609
> Get var2 : 0.93884301
Here are my results. Windows 7 64-bit OS, IDL 8.2.1.
IDL> test_ncdf_strides
Get var1 : 0.51500010
Get var2 (STRIDE): 0.56100011
Get var1 (STRIDE): 0.57699990
Get var2 : 0.46799994
IDL> test_ncdf_strides, /Netcdf4_format
Get var1 : 0.21900010
Get var2 (STRIDE): 3.0420001
Get var1 (STRIDE): 3.0260000
Get var2 : 0.21799994
IDL>
IDL> test_ncdf_strides, /Netcdf4_format
Get var1 : 0.20300007
Get var2 (STRIDE): 3.0419998
Get var1 (STRIDE): 3.0419998
Get var2 : 0.21800017
IDL> test_ncdf_strides
Get var1 : 0.46799994
Get var2 (STRIDE): 0.56100011
Get var1 (STRIDE): 0.56099987
Get var2 : 0.46799994
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
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