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Migration to the new standard environment: Difference between revisions
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Migration to the new standard environment (view source)
Revision as of 19:28, 19 March 2021
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= What are the differences between the old and the new environments ? = | = What are the differences between the old and the new environments ? = <!--T:1--> | ||
These differences are listed on the page [[Standard software environments]]. | These differences are listed on the page [[Standard software environments]]. | ||
= How can I change which version of <code>StdEnv</code> is my default? = | = How can I change which version of <code>StdEnv</code> is my default? = <!--T:2--> | ||
Our clusters use different versions of <code>StdEnv</code> as their default version. As of August 2020, [[Cedar]] and [[Graham]] use <code>StdEnv/2016.4</code>, while [[Béluga/en|Béluga]] uses <code>StdEnv/2018.3</code>. [[Niagara]] also defaults to <code>StdEnv/2018.3</code> if you run <code>module load CCEnv StdEnv</code>. In the future, we will probably update all of them to use <code>StdEnv/2020</code>. However, users can specify their own default by running the following command (example provided for the 2020 version) | Our clusters use different versions of <code>StdEnv</code> as their default version. As of August 2020, [[Cedar]] and [[Graham]] use <code>StdEnv/2016.4</code>, while [[Béluga/en|Béluga]] uses <code>StdEnv/2018.3</code>. [[Niagara]] also defaults to <code>StdEnv/2018.3</code> if you run <code>module load CCEnv StdEnv</code>. In the future, we will probably update all of them to use <code>StdEnv/2020</code>. However, users can specify their own default by running the following command (example provided for the 2020 version) | ||
{{Command|echo "module-version StdEnv/2020 default" >> $HOME/.modulerc}} | {{Command|echo "module-version StdEnv/2020 default" >> $HOME/.modulerc}} | ||
= Do I need to reinstall/recompile my code if the <code>StdEnv</code> version changes? = | = Do I need to reinstall/recompile my code if the <code>StdEnv</code> version changes? = <!--T:3--> | ||
Yes. If you compile your own code, or install R or Python packages, you should recompile or reinstall the packages you need using the newest version of the standard environment. | Yes. If you compile your own code, or install R or Python packages, you should recompile or reinstall the packages you need using the newest version of the standard environment. | ||
= How can I use the old environments ? = | = How can I use the old environments ? = <!--T:4--> | ||
If you have an existing workflow and want to continue to use the same software versions you are using now, simply add | If you have an existing workflow and want to continue to use the same software versions you are using now, simply add | ||
module load StdEnv/2018.3 | module load StdEnv/2018.3 | ||
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to your job script before loading any other modules. | to your job script before loading any other modules. | ||
= Will old environments go away ? = | = Will old environments go away ? = <!--T:5--> | ||
No, they ''will not go away''. They and all the software dependent on them will remain available! However, Compute Canada staff will no longer install anything into the old environemnts. | No, they ''will not go away''. They and all the software dependent on them will remain available! However, Compute Canada staff will no longer install anything into the old environemnts. | ||
= Which environment should I use ? = | = Which environment should I use ? = <!--T:6--> | ||
If you are starting a new project, or if you want to use a newer version of some software, you should use <tt>StdEnv/2020</tt>. Today you can do this by adding | If you are starting a new project, or if you want to use a newer version of some software, you should use <tt>StdEnv/2020</tt>. Today you can do this by adding | ||
module load StdEnv/2020 | module load StdEnv/2020 | ||
to your job script. As of April 1st, 2021, it will be the default and the line will be unnecessary (though not a problem). | to your job script. As of April 1st, 2021, it will be the default and the line will be unnecessary (though not a problem). | ||
= Can I keep the old environment by loading modules in my <code>.bashrc</code> ? = | = Can I keep the old environment by loading modules in my <code>.bashrc</code> ? = <!--T:7--> | ||
Loading modules in your <code>.bashrc</code> is '''not recommended'''. Instead, explicitly load modules in your job scripts. | Loading modules in your <code>.bashrc</code> is '''not recommended'''. Instead, explicitly load modules in your job scripts. | ||
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