Create an Experiment
====================

Create new experiment
-------------------------

To create a new experiment, just run the command:
::

    autosubmit expid -H HPCname -d Description

*HPCname* is the name of the main HPC platform for the experiment: it will be the default platform for the tasks.
*Description* is a brief experiment description.

Options:
::

    usage: autosubmit expid [-h] [-y COPY | -dm] [-p PATH] -H HPC -d DESCRIPTION

        -h, --help            show this help message and exit
        -y COPY, --copy COPY  makes a copy of the specified experiment
        -dm, --dummy          creates a new experiment with default values, usually for testing
        -H HPC, --HPC HPC     specifies the HPC to use for the experiment
        -d DESCRIPTION, --description DESCRIPTION
            sets a description for the experiment to store in the database.
        -c PATH, --config PATH
            if specified, copies config files from a folder

Example:
::

    autosubmit expid --HPC ithaca --description "experiment is about..."

If there is an autosubmitrc or .autosubmitrc file in your home directory (cd ~), you can setup a default file from where the contents of platforms_expid.yml should be copied.

In this autosubmitrc or .autosubmitrc file, include the configuration setting custom_platforms:

Example:
::

    conf:
        custom_platforms: /home/Earth/user/custom.yml

Where the specified path should be complete, as something you would get when executing pwd, and also include the filename of your custom platforms content.

Copy another experiment
--------------------------

This option makes a copy of an existing experiment.
It registers a new unique identifier and copies all configuration files in the new experiment folder:
::

    autosubmit expid -y COPY -H HPCname -d Description
    autosubmit expid -y COPY -c PATH -H HPCname -d Description

*HPCname* is the name of the main HPC platform for the experiment: it will be the default platform for the tasks.
*COPY* is the experiment identifier to copy from.
*Description* is a brief experiment description.
*CONFIG* is a folder that exists.

Example:
::

    autosubmit expid -y cxxx -H ithaca -d "experiment is about..."
    autosubmit expid -y cxxx -p "/esarchive/autosubmit/genericFiles/conf" -H marenostrum4 -d "experiment is about..."

.. warning:: You can only copy experiments created with Autosubmit 3.11 or above.

If there is an autosubmitrc or .autosubmitrc file in your home directory (cd ~), you can setup a default file from where the contents of platforms_expid.yml should be copied.

In this autosubmitrc or .autosubmitrc file, include the configuration setting custom_platforms:

Example:
::

    conf:
    custom_platforms: /home/Earth/user/custom.yml

Where the specified path should be complete, as something you would get when executing pwd, and also include the filename of your custom platforms content.

Create a dummy experiment
--------------------------------

It is useful to test if Autosubmit is properly configured with a inexpensive experiment. A Dummy experiment will check,
test, and submit to the HPC platform, as any other experiment would.

The job submitted are only sleeps.

This command creates a new experiment with default values, useful for testing:
::

    autosubmit expid -H HPCname -dm -d Description

*HPCname* is the name of the main HPC platform for the experiment: it will be the default platform for the tasks.
*Description* is a brief experiment description.

Example:
::

    autosubmit expid -H ithaca -dm "experiment is about..."

Create a test case experiment
------------------------------------

Test case experiments are special experiments which have a reserved first letter "t" at the expid. They are meant to
help differentiate testing suits of the automodels from normal runs.

This method is to create a test case experiment. It creates a new experiment for a test case with a
given number of chunks, start date, member and HPC.

To create a test case experiment, use the command:
::

    autosubmit testcase

Options:
::

    usage: autosubmit testcase [-h] [-y COPY] -d DESCRIPTION [-c CHUNKS]
                               [-m MEMBER] [-s STARDATE] [-H HPC] [-b BRANCH]

        expid                 experiment identifier

         -h, --help            show this help message and exit
         -c CHUNKS, --chunks CHUNKS
                               chunks to run
         -m MEMBER, --member MEMBER
                               member to run
         -s STARDATE, --stardate STARDATE
                               stardate to run
         -H HPC, --HPC HPC     HPC to run experiment on it
         -b BRANCH, --branch BRANCH
                               branch from git to run (or revision from subversion)

Example:
::

    autosubmit testcase -d "TEST CASE cca-intel auto-ecearth3 layer 0: T511L91-ORCA025L75-LIM3 (cold restart) (a092-a09n)" -H cca-intel -b 3.2.0b_develop -y a09n

Test the experiment
-------------------

This method is to conduct a test for a given experiment. It creates a new experiment for a given experiment with a
given number of chunks with a random start date and a random member to be run on a random HPC.

To test the experiment, use the command:
::

    autosubmit test CHUNKS EXPID

*EXPID* is the experiment identifier.
*CHUNKS* is the number of chunks to run in the test.



Options:
::

    usage: autosubmit test [-h] -c CHUNKS [-m MEMBER] [-s STARDATE] [-H HPC] [-b BRANCH] expid

        expid                 experiment identifier

         -h, --help            show this help message and exit
         -c CHUNKS, --chunks CHUNKS
                               chunks to run
         -m MEMBER, --member MEMBER
                               member to run
         -s STARDATE, --stardate STARDATE
                               stardate to run
         -H HPC, --HPC HPC     HPC to run experiment on it
         -b BRANCH, --branch BRANCH
                               branch from git to run (or revision from subversion)

Example:
::

    autosubmit test -c 1 -s 19801101 -m fc0 -H ithaca -b develop cxxx