pyiron.base.master.serial module

class pyiron.base.master.serial.GenericOutput[source]

Bases: collections.OrderedDict

Generic Output just a place holder to store the output of the last child directly in the SerialMaster.

class pyiron.base.master.serial.SerialMasterBase(project, job_name)[source]

Bases: pyiron.base.master.generic.GenericMaster

The serial master class is a metajob consisting of a dynamic list of jobs which are executed in serial mode. The job is derived from the GenericMaster.

  • project (ProjectHDFio) – ProjectHDFio instance which points to the HDF5 file the job is stored in

  • job_name (str) – name of the job, which has to be unique within the project

.. attribute:: job_name

name of the job, which has to be unique within the project

.. attribute:: status
execution status of the job, can be one of the following [initialized, appended, created, submitted,

running, aborted, collect, suspended, refresh, busy, finished]

.. attribute:: job_id

unique id to identify the job in the pyiron database

.. attribute:: parent_id

job id of the predecessor job - the job which was executed before the current one in the current job series

.. attribute:: master_id

job id of the master job - a meta job which groups a series of jobs, which are executed either in parallel or in serial.

.. attribute:: child_ids

list of child job ids - only meta jobs have child jobs - jobs which list the meta job as their master

.. attribute:: project

Project instance the jobs is located in

.. attribute:: project_hdf5

ProjectHDFio instance which points to the HDF5 file the job is stored in

.. attribute:: job_info_str

short string to describe the job by it is job_name and job ID - mainly used for logging

.. attribute:: working_directory

working directory of the job is executed in - outside the HDF5 file

.. attribute:: path

path to the job as a combination of absolute file system path and path within the HDF5 file.

.. attribute:: version

Version of the hamiltonian, which is also the version of the executable unless a custom executable is used.

.. attribute:: executable

Executable used to run the job - usually the path to an external executable.

.. attribute:: library_activated

For job types which offer a Python library pyiron can use the python library instead of an external executable.

.. attribute:: server

Server object to handle the execution environment for the job.

.. attribute:: queue_id

the ID returned from the queuing system - it is most likely not the same as the job ID.

.. attribute:: logger

logger object to monitor the external execution and internal pyiron warnings.

.. attribute:: restart_file_list

list of files which are used to restart the calculation from these files.

.. attribute:: job_type
Job type object with all the available job types: [‘ExampleJob’, ‘SerialMaster’, ‘ParallelMaster’,

‘ScriptJob’, ‘ListMaster’]

.. attribute:: child_names

Dictionary matching the child ID to the child job name.

.. attribute:: start_job

The first job of the series.

.. attribute:: input

The input of the start job - the first job of the series.


The collect logfiles function is required by the GenericJob class, therefore we use an empty template here.


Collect the output files of the individual jobs and set the output of the last job to be the output of the SerialMaster - so the SerialMaster contains the same output as its last child.


Copy the GenericJob object which links to the job and its HDF5 file


New GenericJob object pointing to the same job

Return type



Create the next job in the series by duplicating the previous job.


job_name (str) – name of the new job - optional - default=’job_<index>’


next job

Return type


from_hdf(hdf=None, group_name=None)[source]

Restore the SerialMaster from an HDF5 file

  • hdf (ProjectHDFio) – HDF5 group object - optional

  • group_name (str) – HDF5 subgroup name - optional


Extract the output from all child jobs and appending it to a list


path (str) – path inside the HDF5 files of the individual jobs like ‘output/generic/volume’


list of output from the child jobs

Return type



Get name of the initial child.


name of the initial child

Return type


property input

Get the input of the start job - the first job of the series.


input of the start job

Return type



Iterate over the jobs within the SerialMaster


convert_to_object (bool) – load the full GenericJob object (default) or just the HDF5 / JobCore object


Yield of GenericJob or JobCore

Return type


property ref_job

For jobs which executables are available as Python library, those can also be executed with a library call instead of calling an external executable. This is usually faster than a single core python job.


Internal helper function the run if refresh function is called when the job status is ‘refresh’. If the job was suspended previously, the job is going to be started again, to be continued.


The run static function is called by run to execute the simulation.

set_goal(convergence_goal, **qwargs)[source]

Set a convergence goal for the SerialMaster - this is necessary to stop the series.

  • convergence_goal (Function) – the convergence goal can be any Python function, but if external packages are used like numpy they have to be imported within the function.

  • **qwargs – arguments of the convergence goal function.


This function enforces read-only mode for the input classes, but it has to be implement in the individual classes.


list all jobs in the SerialMaster


list of jobs [‘job’, <index>, <GenericJob>]

Return type


property start_job

Get the first job of the series.


start job

Return type


to_hdf(hdf=None, group_name=None)[source]

Store the SerialMaster in an HDF5 file

  • hdf (ProjectHDFio) – HDF5 group object - optional

  • group_name (str) – HDF5 subgroup name - optional


Write the input files - for the SerialMaster this only contains convergence goal.