## RunnerBackend.JoblibRunnerBackend


Parallelisation backend based on the pyrallex Python library.


Usage

``` python
RunnerBackend.JoblibRunnerBackend(ncores=os.cpu_count() - 1)
```


## Attributes


`ncores: int`  
Number of cores to use for parallelisation.


## Methods

| Name | Description |
|----|----|
| [__init__()](#__init__) | Initialise the pyrallex backend. |
| [pyrallex()](#pyrallex) | Run experiments in parallel. |

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#### \_\_init\_\_()


Initialise the pyrallex backend.


Usage

``` python
__init__(ncores=os.cpu_count() - 1)
```


##### Parameters


`ncores: int = os.cpu_count() - 1`  
ncores (int): Number of cores to use for parallelisation. Defaults to one less than the available number of cores on your machine.


------------------------------------------------------------------------


#### pyrallex()


Run experiments in parallel.


Usage

``` python
pyrallex(runner, jobids)
```


##### Parameters


`runner: Callable[[int], any]`  
A function that expects a job ID and returns anything. As a side effect the function shall write to the job's output path.

`jobids: list[int]`  
List of job IDs to be executed.


##### Returns


`list[any]`  
A list of whatever the 'runner' function returns.