Question

I need to call source on a snow cluster to re-eval some functions. The call to clusterCall() I’m using doesn’t work:

cl = makeSOCKcluster(rep("localhost", 5))
> clusterCall(cl, getwd)
[[1]]
[1] "/home/user"

[[2]]
[1] "/home/user"

[[3]]
[1] "/home/user"

[[4]]
[1] "/home/user"

[[5]]
[1] "/home/user"

> clusterCall(cl, source, 'ets.load.R')
Error in checkForRemoteErrors(lapply(cl, recvResult)) : 
  5 nodes produced errors; first error: cannot open the connection

Answer 1

I’ve found the problem, had to set the correct working directory first, or specify ets.load.R with its absolute path:

clusterEvalQ(cl, source('~/home/user/ets.load.R'))
clusterCall(cl, function() { source('~/home/users/ets.load.R'); NULL })