On Tue, Sep 23, 2014 at 1:58 AM, myasuka <[email protected]> wrote: > Thus I want to know why recommend > 2-3 tasks per CPU core? >
You want at least 1 task per core so that you fully utilize the cluster's parallelism. You want 2-3 tasks per core so that tasks are a bit smaller than they would otherwise be, making them shorter and more likely to complete successfully. Nick
