1.2.7 (2019/04)


  • Deprecate OVH support (OVH stopped FPGA support).
  • Warn about Python 3.4 pending deprecation.
  • Remove links to the deprecated AccelStore (Move to the Accelize distribution platform)

1.2.6 (2019/02)


  • Fix error with non existing EBS section in block devices.

1.2.5 (2019/01)


  • now enable DeleteOnTermination on all instance block devices by default. This behavior can be disabled and reset to AWS default using the delete_volumes_on_termination=False argument.

1.2.4 (2018/12)


  • now checks instance boot using port 22 instead of 80.
  • can now be used to start a custom instance instead of an predefined accelerator instance more easily.

1.2.3 (2018/10)

Backward incompatible changes:

  • The info_dict argument behavior was changed. Previously, using it changed the returned result of methods. To avoid this, info_dict now waits a dict to populate with extra information. This argument is mainly intended to get debug or profiling information.

    Previous behavior:

    # This return only the processing result
    # This return a tuple containing the processing result and the
    # information dict.
    my_accel.process(dst='data.dat', info_dict=True)

    New behavior:

    # This return only the processing result
    # This still return only the processing result.
    # Information are now stored in the "info" dict.
    info = dict()
    my_accel.process(dst='data.dat', info_dict=info)
  • The info_dict argument from AcceleratorPoolExecutor.start, AcceleratorPoolExecutor.stop, AcceleratorPoolExecutor.process_map and Accelerator.process_map methods is replaced by info_list and wait a list to populate instead of a dict.

1.2.2 (2018/10)


  • Improve stop behavior depending if run by user or by garbage collector or with exit.

1.2.1 (2018/10)


  • Fix broken input and output data on some accelerators when using cloud storage.
  • Accelerator and AcceleratorPoolExecutor now waits completion of all asynchronous tasks (From process_submit or process_map) before exiting using stop. This avoid the accelerator or the host to be stopped before the end of tasks if with statement exited or Accelerator garbage collected when tasks are still running.
  • Improve user public IP handling.

1.2.0 (2018/10)

New features

  • Apyfal now fully support HTTPS between client and host.
  • Apyfal can generate self signed certificates for generated hosts, theses certificates are verified by the client.
  • Add of process_map and process_submit methods to the Accelerator class to performs process call asynchronously and improve performance on batch of processing tasks.
  • Add the AcceleratorPoolExecutor that allow to perform processing tasks asynchronously over a pool of multiple accelerators hosts.

General improvements

  • Apyfal CLI: create is now optional if can be called without any arguments, This is mainly intended to use local accelerator directly on host.
  • It is now possible to use private IP instead of public IP as accelerator default URL. See use_private_ip parameter.
  • Host instance have a new Apyfal tag/metadata with host_name_prefix value.
  • Add boto3 as default dependency. Actually AWS is the only provider ready for production and is the most commonly used. Other providers are available using extra setup options.
  • Change logging levels to show only minimal information with INFO, implementation and step detail is still available using the DEBUG level. This allow to show more relevant information when using Apyfal with CLI or running Accelerators examples.
  • Minimum packages versions are set in setup based on packages changelog or date.
  • Hosts instantiation now support passing custom arguments to their libraries. See each specific host documentation for more information.

REST client improvements

  • Uses requests_toolbelt instead of PycURL to upload big files. This simplify the Apyfal installation by using a far more easier to install library.
  • Uses requests instead of Swagger codegen generated client. This simplify the REST client, removes some dependencies remove extra build step.
  • Improves exceptions handling to add more detailed information from server and handle HTTP errors correctly.


  • Fix bad text formatting in some exception messages.
  • Server side logging was improved.
  • Apyfal CLI: Fixed parsing of numeric parameters.
  • Apyfal CLI: Fixed result dict handling.
  • Fix accelerator application stopped if client with exited or garbage collected.
  • Fix instance still running warning shown twice.
  • Fix stop_mode overridden by default accelerator value.
  • Fix case handling in configuration file.
  • The host server now checks the Apyfal version used as client and raise a proper exception if not compatible.
  • The host server was updated to be compatible with Apyfal starting from 1.0.0 instead of only 1.1.0.
  • Apyfal now configures FPGA properly if run locally on a host no generated by Apyfal client (Ex: Host instance generated manually using accelerator image)
  • Apyfal now runs the local accelerator if available even if a host_type is provided in configuration file.
  • Fix Apyfal setup fail due to missing ipgetter package on PyPI (This package was removed by this author without notice).


  • The optional extra setup option is deprecated with the replacement of PycURL.

Pending deprecations:

  • file_in and file_out argument in process method are replaced by src and dst. datafile argument in start method is replaced by src. This name change allow us to provides a better input and output data support in next version (No only files). The backward compatibility is kept for old arguments names but will be removed a future version.

1.1.0 (2018/08)

New features

  • Add support for cloud storage and more in package using pycosio.
  • Add Apyfal CLI, this allow to use Apyfal from outside Python.
  • Apyfal can now be used locally on host (as library or CLI).
  • Add apyfal.iter_accelerator function to iterates over all existing accelerators for a configuration.
  • Add Alibaba Cloud support.
  • It is now possible to pass a SSL/TLS certificates to host instance to enable HTTPS.

General improvements

  • Move OpenStack library from openstacksdk to python-novaclient and python-neutronclient. This adds more precision over the OpenStach Nova host control and reduces the overall number of required dependencies.
  • Accelerator, Host and clients now have a proper string representation.
  • Speed up cloud host configuration.
  • Host now support the init_script argument to pass a custom bash script on instance startup, and the init_config argument to pass a configuration file.
  • Apyfal now accepts path-like objects as path/URL arguments.

Configuration improvements:

  • Add subsection support in configuration file (ex: [host.host_type])
  • Configuration file can be loaded from URL.
  • Configuration class is now a Mapping instead of ConfigParser subclass.
  • Configuration file is now open with UTF-8 encoding.
  • Add host_name_prefix in host section, This allow to add a custom prefix at the start of the created host name.


  • Importing Apyfal from an unsupported Python version now raises ImportError.
  • Host stop_mode is now correctly loaded from configuration file.
  • Fix available regions list in exception message when trying to use a non existing region.
  • Apyfal don’t wait until end of timeout if instance is in error status during instance provisioning.
  • Instance now terminates correctly if both instance_id and host_ip are provided.
  • stop stop_mode with OpenStack now pauses instance instead of terminates it.
  • Exception on AWS IAM policy first creation.
  • Using start is not still mandatory when connecting to an already existing instance.


  • exit_host_on_signal host parameter was removed due to side effects. Use accelerator with the with statement to automatically terminate instance after run.

1.0.0 (2018/06)

Created the new apyfal library based on legacy acceleratorAPI.

Apyfal keeps all the features from acceleratorAPI but was largely improved. Apyfal is not backward compatible with acceleratorAPI (Read the documentation to see how update code). Future version of Apyfal will be compatible with this one.

Features of the 1.0.0 version:

  • Accelerator start, process and stop in cloud environment.
  • Accelerator configuration with arguments and/or configuration file.
  • Support for generic OpenStack host.
  • Support for AWS and OVH public host.
  • Complete unittest for the core or the package.
  • Full Sphinx documentation.