accasim.utils.reader_class module

MIT License

Copyright (c) 2017 cgalleguillosm

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class accasim.utils.reader_class.DefaultReader(filepath, job_factory=None, parser=None, tweak_function=None, max_lines=None, start_time=0, equivalence={})

Bases: accasim.utils.reader_class.Reader

A default implementation of the reader class. This implementation works reading a workload file line by line.

open_file()

Returns:

class accasim.utils.reader_class.DefaultTweaker(start_time, system_resources=None, equivalence=None)

Bases: accasim.utils.reader_class.Tweaker

tweak_function(_dict)

As in the SWF workload logs the numbers of cores are not expressed, just the number of requested processors, we have to tweak this information i.e we replace the number of processors by the number of requested cores.

The equivalence from processor to core is given in the system config file. As in the example, one processor contains two cores. Then the number of cores will be processor * core. Besides, memory is expressed in kB per processor.

Example:

>>> "equivalence": {
>>>     "processor": {
>>>         "core": 2
>>>     }
>>> }

Parameters:_dict – Dictionary to be tweaked. Returns:The tweaked dictionary.

class accasim.utils.reader_class.DefaultWorkloadParser

Bases: accasim.utils.reader_class.WorkloadParserBase

feasible_line(line)

Parameters:line – Line to be checked Returns:True if it can be parse (it does not match to any avoid token), False otherwise.

parse_line(line)

Parse a feasible line, returning a dict for all groupnames :param line: Line to be parsed

Returns:A dictionary of the parsed data.

class accasim.utils.reader_class.Reader(_job_factory)

Bases: abc.ABC

This class is used to simulate the creation of jobs from HPC users. This is an abstract class. The main method is read, which must be implemented to return the set of next submission for the system.

Note:A default implementation is named as DefaultReader. This class read from a single file, and use a SWF parser to extract the jobs.

next(current_time, time_points=2, stime_name='queued_time')

Laods the data and generates the jobs that belongs to the corresponding next time_points.

Parameters:

• current_time – Current simulated point.
• time_points – Number of submission points to be loaded
• stime_name – Name of the attribute (key dictionary) of the submit/queue time

Returns:

A tuple composed with an array of the next time points sorted chronologically and a Dictionary with an array for each time point {time_point: [job_1, …, job_n]}

stop_submission()

Marks as stopped the submission process.

class accasim.utils.reader_class.Tweaker(**kwargs)

Bases: abc.ABC

tweak_function(job_dict)

Parameters:job_dict – Returns:

class accasim.utils.reader_class.WorkloadParserBase

Bases: abc.ABC

Workload Parser Abstract class

parse_line(line)

Parses a lines and retrieves the corresponding dictionary.

Parameters:line – A text line which keep all job data. Returns:A dictionary of the parsed data.