HPC/Module naming scheme 2016: Difference between revisions

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<source lang="bash">
<source lang="bash">
cd      # Go to home directory
cd      # Go to home directory
grep module .bashrc > .modules-el5.inactive
grep -A 1  module .bashrc > .modules-el5.inactive
cp .modules-el5.inactive .modules-el6
cp .modules-el5.inactive .modules-el6



Revision as of 18:03, August 29, 2015

Configuration files used

You have files:
.bashrc and …
Remark CentOS-5 uses CentOS-6 uses
module names files module names files
Starting situation. old .bashrc only new .bashrc only
.modules-el6 Switch over, recommended. new .modules-el6 and .bashrc .modules-el6 and .bashrc
.modules-el5 Avoid! – file ignored on EL6. old .modules-el5 and .bashrc .bashrc only
.modules-el5 .modules-el6 For advanced users. old .modules-el5 and .bashrc .modules-el6 and .bashrc

Configuration steps

New-style modules only (recommended)

To switch over to new hierarchical module names on both CentOS releases you could continue making all your module choices in ~/.bashrc and simply signal on the older platform to use the new module style by creating an empty new-style customization file: touch ~/.modules-el6 .

However, it's perhaps cleaner to move the module selection into their dedicated files:

  1. Move your previous module selections inro a conspicuously named but otherwise unused file, e.g., .modules-el5.inactive.
  2. Duplicate the file and adapt its contents to new module names, as follows:
    • Remove version numbers from module names of the old-style packagename/version, leaving only packagename. This is the recommended approach, as you will automatically benefit from future updates.
    • To insist on a specific version for a package affected by the new-style names, use the form packagename/compilername/version or packagename/mpiname/compilername/version as appropriate. To see available flavors and versions, separately run the command module avail packagename.
  3. Remove all previous module customizations from ~/.bashrc.
  4. Test.
cd      # Go to home directory
grep -A 1  module .bashrc > .modules-el5.inactive
cp .modules-el5.inactive .modules-el6

vi .modules-el6    # adapt module names
vi .bashrc         # remove all lines with "module" commands

# Test
exec bash -l
module list

CentOS-dependent module selection

If you encounter difficulties with making your module selection work in both CentOS-5 and CentOS-6, use separate configurations.

  1. Follow the steps as above.
  2. Re-activate the older module selection.
  3. Test.
cd      # Go to home directory
mv .modules-el5.inactive .modules-el5

# Test
exec bash -l
module list