Hi Ken, sorry for the late response. The number of CPU cores we show in the web interface is based on what the JVM tells us from "Runtime.getRuntime().availableProcessors();". I'm not sure how tthe processor count behaves on Amazon VMs.
Given that each of your servers has 8 vCores, I would set the slot count to 8 per Taskmanager. On Fri, Apr 29, 2016 at 1:58 AM, Ken Krugler <kkrugler_li...@transpac.com> wrote: > Based on what Flink reports in the JobManager GUI, it looks like it thinks > that the EC2 instances I’m using for my EMR jobs only have 4 physical cores. > > Which would make sense, as Amazon describes these servers as having 8 > vCores. > > From > https://ci.apache.org/projects/flink/flink-docs-master/setup/config.html, > the recommended configuration would then be 4 slots/TaskManager, yes? > > Thanks, > > — Ken > > -------------------------- > Ken Krugler > +1 530-210-6378 > http://www.scaleunlimited.com > custom big data solutions & training > Hadoop, Cascading, Cassandra & Solr > > > >
