other:newppl:starting
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other:newppl:starting [2024/03/29 13:49] jypeter [Text editors] Added 'less' and 'nano' |
other:newppl:starting [2024/07/02 10:22] jypeter [NetCDF and related Conventions] Improved... |
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| $ hostname | $ hostname | ||
| obelix5</code> | obelix5</code> | ||
| + | * In a python script, you can use the following to get some information | ||
| + | * <code>>>> import os | ||
| + | >>> os.getlogin(), os.getenv('HOST') | ||
| + | ('mylogin', 'obelix5')</code> | ||
| * **[[https://intranet.lsce.ipsl.fr/informatique/en/calcul/batch.php|The LSCE cluster]]** (aka the //batch system//)\\ Use this cluster for **//heavy duty// programs**, rather than killing the multi-users interactive servers | * **[[https://intranet.lsce.ipsl.fr/informatique/en/calcul/batch.php|The LSCE cluster]]** (aka the //batch system//)\\ Use this cluster for **//heavy duty// programs**, rather than killing the multi-users interactive servers | ||
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| ==== Using module to access optional programs ==== | ==== Using module to access optional programs ==== | ||
| - | Main ''module'' options: | + | Most useful ''[[https://modules.readthedocs.io/|module]]'' options: |
| * ''module list'': list the currently loaded modules | * ''module list'': list the currently loaded modules | ||
| - | * ''module avail'': list the available modules | + | * ''module avail [mod_name]'': list the available modules (or only the ones with a name starting with ''mod_name'') |
| * ''module load module_a ... module_n'': load modules (automatically including dependencies) | * ''module load module_a ... module_n'': load modules (automatically including dependencies) | ||
| * ''module load module_a'': load default version of //module_a// | * ''module load module_a'': load default version of //module_a// | ||
| Line 460: | Line 464: | ||
| No Modulefiles Currently Loaded. | No Modulefiles Currently Loaded. | ||
| - | > module avail | + | > module avail ncview |
| - | [...] | + | ncview/2.1.7 |
| - | batch_env grib_api/1.14.0 netcdf/4 python/3.6 | + | |
| - | [...] | + | |
| - | glost/0.3.1 ncview/2.1.7 python/2.7 | + | |
| > module load ncview netcdf/4 | > module load ncview netcdf/4 | ||
| Line 534: | Line 535: | ||
| * What are binary ({{:other:newppl:binaire_jyp.pdf}}) and NetCDF ({{:other:newppl:netcdf_jyp.pdf}}) files? | * What are binary ({{:other:newppl:binaire_jyp.pdf}}) and NetCDF ({{:other:newppl:netcdf_jyp.pdf}}) files? | ||
| + | * A reminder about [[other:python:misc_by_jyp#numerical_values|numerical precision]] | ||
| * [[http://www.unidata.ucar.edu/software/netcdf/|Network Common Data Form (NetCDF)]] official page | * [[http://www.unidata.ucar.edu/software/netcdf/|Network Common Data Form (NetCDF)]] official page | ||
| * [[http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#How-many-netCDF-formats-are-there-and-what-are-the-differences-among-them|The different netCDF formats]] (and do not forget to use ''ncdump -k data.nc'' if you need to know the format) | * [[http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#How-many-netCDF-formats-are-there-and-what-are-the-differences-among-them|The different netCDF formats]] (and do not forget to use ''ncdump -k data.nc'' if you need to know the format) | ||
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| * Displaying the content of a NetCDF file in a text format\\ Check the ''ncdump'' [[https://docs.unidata.ucar.edu/nug/current/netcdf_utilities_guide.html#ncdump_guide|options]]. People usually want to quickly check the metadata, and use other programs to work with the actual data | * Displaying the content of a NetCDF file in a text format\\ Check the ''ncdump'' [[https://docs.unidata.ucar.edu/nug/current/netcdf_utilities_guide.html#ncdump_guide|options]]. People usually want to quickly check the metadata, and use other programs to work with the actual data | ||
| - | * ''ncdump some_climate_data_file.nc'': dump the full content to text | + | * ''ncdump -h some_climate_data_file.nc'': only display the metadata (//h_eader// of the file) |
| - | * ''ncdump -h some_climate_data_file.nc'': only display the metadata | + | * ''ncdump some_climate_data_file.nc | less'': dump the **full** content to text, and use ''less'' to display it page by page |
| + | * Maybe it is time to learn how to {{:other:newppl:houchesa4_updated.pdf|work efficiently with big text files}} | ||
| * You can use [[other:win7apps#panoply|Panoply]] and [[http://meteora.ucsd.edu/~pierce/ncview_home_page.html|ncview]] for quickly visualizing NetCDF files | * You can use [[other:win7apps#panoply|Panoply]] and [[http://meteora.ucsd.edu/~pierce/ncview_home_page.html|ncview]] for quickly visualizing NetCDF files | ||
| * Manipulating NetCDF files: | * Manipulating NetCDF files: | ||
| * [[https://code.zmaw.de/projects/cdo/wiki/Cdo#Documentation|Climate Data Operators]] (''cdo'') | * [[https://code.zmaw.de/projects/cdo/wiki/Cdo#Documentation|Climate Data Operators]] (''cdo'') | ||
| + | * Use ''[[#using_module_to_access_optional_programs|module]] load cdo'' on the LSCE and IPSL servers | ||
| * [[http://nco.sourceforge.net/#RTFM|netCDF Operator]] (//NCO// operators) | * [[http://nco.sourceforge.net/#RTFM|netCDF Operator]] (//NCO// operators) | ||
| + | * Use ''[[#using_module_to_access_optional_programs|module]] load cdo'' on the LSCE and IPSL servers | ||
| === NetCDF related Conventions === | === NetCDF related Conventions === | ||
| + | |||
| + | * [[http://cfconventions.org/|NetCDF CF (Climate and Forecast) Metadata Conventions]] | ||
| * [[https://arxiv.org/abs/1911.08638|Gridspec: A standard for the description of grids used in Earth System models]] | * [[https://arxiv.org/abs/1911.08638|Gridspec: A standard for the description of grids used in Earth System models]] | ||
| * A nice document for discovering the different type of (ir)regular grids used in climate models! | * A nice document for discovering the different type of (ir)regular grids used in climate models! | ||
| - | * [[http://cfconventions.org/|NetCDF CF (Climate and Forecast) Metadata Conventions]] | ||
| * [[https://ugrid-conventions.github.io/ugrid-conventions/|UGRID Conventions]] for storing unstructured (or flexible mesh) model data | * [[https://ugrid-conventions.github.io/ugrid-conventions/|UGRID Conventions]] for storing unstructured (or flexible mesh) model data | ||
| + | |||
| * [[http://sgrid.github.io/sgrid/|SGRID Conventions]] for storing staggered data on structured grids that are consistent with the UGRID conventions | * [[http://sgrid.github.io/sgrid/|SGRID Conventions]] for storing staggered data on structured grids that are consistent with the UGRID conventions | ||
other/newppl/starting.txt · Last modified: 2024/07/02 10:22 by jypeter
