- Update to 8.0.0
* This is marked as a major revision because of the change to
pass connection information via environment variables.
BatchSystem launchers with a custom template will need to make
sure to set flags that inherit environment variables, such as
#PBS -V or #SBATCH --export=ALL.
* More convenient Cluster(engines="mpi") signature for setting
the engine (or controller) launcher class.
* The first (and usually only) engine set can be accessed as
.Cluster.engine_set, rather than digging through the
Cluster.engines dict.
* Add environment configuration to all Launchers.
* Support more configuration via environment variables, including
passing connection info to engines via $IPP_CONNECTION_INFO,
which is used by default, avoiding the need to send connection
files to engines in cases of non-shared filesystems.
* Launchers send connection info to engines via
$IPP_CONNECTION_INFO by default. This is governed by
Cluster.send_engines_connection_env, which is True by default.
* Support EngineLauncher.get_output via output files in batch
system launchers
* Capture output in Batch launchers by setting output file
options in the default templates.
* LoadBalancedView.imap returns a LazyMapIterator which has a
.cancel() method, for stopping consumption of the map input.
* Support for return_when argument in .AsyncResult.wait and
~.AsyncResult.wait_interactive, to allow returning on the first
error, first completed, or (default) all completed.
* LoadBalancedView.imap(max_outstanding=n) limits the number of
tasks submitted to the cluster, instead of limiting the number