One possible way to run/destroy processing sketches on deck.change

deck.processing.js

$(document).bind('deck.init', function() {
  $.each(Processing.instances, function(i, instance) {
    instance.exit(); // Exit all drawings to start
  });
});

$(document).bind('deck.change', function(event, from, to) {
  var $exitingCanvases = $.deck('getSlide', from).find('canvas[data-processing-sources]');
  var $enteringCanvases = $.deck('getSlide', to).find('canvas[data-processing-sources]');

  $enteringCanvases.each(function(i, canvas) {
    var method = $(canvas).data('loop') ? 'loop' : 'redraw';
    // Add data-loop to the canvas element if you want it to loop instead of redraw once

    Processing.getInstanceById(canvas.id)[method]();
  });

  $exitingCanvases.each(function(i, canvas) {
    Processing.getInstanceById(canvas.id).exit();
  });
});