Local Multiprocessing

By default, if you don't configure an async task queue, QA-Board will use joblib and local multiprocessing to run your batches.

Running batches locally

If you configured an another runner, you can always:

qa batch --runner=local my-batch

Configuration

There is only 1 option: concurrency. You have multiple options to set it up:

• Per batch:

qa/batches.yaml

my-batch:
  inputs:
  - image.jpg
  local:
    concurrency: -1 # 1 concurrent run per CPUs, default

• Globally:

qaboard.yaml

runners:
  default: local  # default
  local:
    concurrency: 1 # serially

• On the CLI:

qa batch --local-concurrency 1

• via the QA_BATCH_CONCURRENCY environment variable

tip

Read joblib's docs