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From anny9699 <anny9...@gmail.com>
Subject worker_instances vs worker_cores
Date Mon, 20 Oct 2014 22:21:18 GMT
Hi,

I have a question about the worker_instances setting and worker_cores
setting in aws ec2 cluster. I understand it is a cluster and the default
setting in the cluster is

*SPARK_WORKER_CORES = 8
SPARK_WORKER_INSTANCES = 1*

However after I changed it to

*SPARK_WORKER_CORES = 8
SPARK_WORKER_INSTANCES = 8*

Seems the speed doesn't change very much. Could anyone give an explanation
about this? Maybe more details about work_cores vs worker_instances?

Thanks a lot!
Anny




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