title: Minimagick error: libgomp: Thread creation failed: Resource temporarily unavailable
body: <p>I am trying to do a bulk conversion of photos using MiniMagick / ImageMagick / mogrify and I keep on seeing:</p>
  
  <p><code>libgomp: Thread creation failed: Resource temporarily unavailable</code></p>
  
  <p>It processes the first 500 or so photos fine, and then seems to be stalled on photo #494 out of 3093. </p>
  
  <p>Does anyone know why this happens?</p>