Advanced Configuration

Data Management

Automatic Replication

The drepl command can be used with the -D argument to specify a destination Storage Element. However, this can become tideous when there is a need of multiple replicas across multiple SEs.

The replications_ses configuration option (associated to a user profile within the ~/.dirac/dcommands.conf) can be used to provide a default list of SEs to use in conjunction with drepl. It can also be set session-wise with the dsetenv command.

Example:

$ dsetenv replication_ses=M3PEC-disk,MSFG-disk

The default behaviour is to create replicas on every SE listed in replications_ses. However, the configuration option replication_scheme can be used to change this. Here are the schemes available to way SEs are selected to make replicas:

• all(): all SEs listed in replications_ses are used (the default)
• first(<num>): select the first "num" SEs from the list
• random(<num>): randomly choose "num" SEs from the list

Job Management

JDL customization

The dsub command usually generates a JDL for submitting to DIRAC on the fly. It uses by default a very simple setup. Users can change this setup with the --JDL commandline option.

A custom default JDL can be set in the ~/.dirac/dcommands.conf configuration file (or session-wise with the dsetenv command) by setting the jdl option.

For example, if you want to avoid running jobs at some site for the current session, you do this with:

$ dsetenv jdl="[OutputSandbox = {\"std.out\",\"std.err\"}; BannedSite = \"Some.Faulty.Site\"]"

Alternatively, as with the --JDL commandline option, you can set jdl option to the absolute path of a JDL formatted file. Example in ~/.dirac/dcommands.conf:

[frangrilles_user]
...
jdl=/home/pigay/.dirac/frangrilles.jdl
...

Display Custom Columns in dstat

dstat has a commandline option that allows to specify which job fields are to be displayed.

You can set it in the configuration file or in the session using the dstat_fields configuration/session option.

For example, if you want a very compact job listing, you can do:

$ dsetenv dstat_fields=Status
$ dstat -a
 JobID  Status 
------- ------ 
7444908  Done  
7444910  Done  
7444911  Done  
7444912  Done