We definitely see Spark + Scala + Blazegraph DASL to be a sweet spot for combining the ease of Spark with the GPU performance.  Have a submission in to the Hadoop Summit in June on it:  <a href="https:&#x2F;&#x2F;hadoopsummit.uservoice.com&#x2F;forums&#x2F;344955-data-science-analytics-and-spark&#x2F;suggestions&#x2F;11664123-the-power-of-spark-the-speed-of-gpus-for-graph-an" rel="nofollow">https:&#x2F;&#x2F;hadoopsummit.uservoice.com&#x2F;forums&#x2F;344955-data-scienc...</a>