Hello Rajendra,

Regarding your original question about starting a sockets cluster, I had the exact same problem (object '.doSnowGlobals' not found) last week when I converted a cluster using SNOW and doSNOW to use parallel and doParallel. The error about .doSnowGlobals actually comes from the doParallel package (in code obviously adapted from the doSNOW package).

The problem was that I was running R version 3.1.1 on the master and R version 3.0.1 on the worker nodes, which includes an older version on the parallel package.

When I updated all of the worker nodes to the latest version of R (and hence parallel), then everything worked fine.

>From what I can see of your code, it should work as well if the versions are correct.

I would check which version of R you are running on the master and on the worker nodes. There is probably a mismatch.

-- Reuben Bellika

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