title: Set the parallelism level for all collections in Scala 2.10?
body: <p>I understand how to set the parallelism level for a single parallel collection, via the mutable <code>tasksupport</code> field (c.f. <a href="https://stackoverflow.com/a/5425354/82970">https://stackoverflow.com/a/5425354/82970</a>).</p>
  
  <blockquote>
    <p>How can I set the parallelism level for all new parallel collections in Scala 2.10?</p>
  </blockquote>
  
  <p>A subsidiary question --- is the <code>tasksupport</code> associated to a parallel collection 'inherited' by new parallel collections built out of it? (e.g. with <code>take</code>, <code>map</code>, etc.)</p>