Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
hinsen@xxxxxxxxxxxxxxxxxxxxx writes: > ... The data in the files is essentially > one single-precision float array of dimensions 8000 x 3 x 16000, the > last dimension being declared as "unlimited". I read and write > subarrays of shape 1 x 3 x 16000. ... For simplicity call the unlimited dimension t. A netcdf file stores all the data for t=1, then for t=2 etc. Your description of the array indices means that each subarray is scattered through the entire file and requires accessing almost every file block. Things should be a lot better if you write subarrays of 8000 x 3 x 1 or if you can't do this, rearrange the file so that the 8000 dimension is unlimited rather than the 16000 dimension. Martin Dix CSIRO Atmospheric Research Phone: +61 3 9239 4533 Private Bag No. 1, Aspendale Fax: +61 3 9239 4444 Victoria 3195 Australia Email: martin.dix@xxxxxxxxxxxx
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