Created
February 21, 2015 13:53
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Creating progress bars from each parallel worker using foreach and doParallel
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| library(foreach) | |
| library(iterators) | |
| library(doParallel) | |
| library(tcltk) | |
| # Choose number of iterations | |
| n <- 1000 | |
| cl <- makeCluster(8) | |
| registerDoParallel(cl) | |
| time3 <- system.time({ | |
| clusterExport(cl, c("n")) # Export max number of iteration to workers | |
| k <- foreach(i = icount(n), .packages = "tcltk", .combine = c) %dopar% { | |
| if(!exists("pb")) pb <- tkProgressBar("Parallel task", min=1, max=n) | |
| setTkProgressBar(pb, i) | |
| Sys.sleep(0.05) | |
| log2(i) | |
| } | |
| }) | |
| #Stop the cluster | |
| stopCluster(cl) | |
| print(time3) |
works fine for me
Don't think this works with windows.
This works fine for me on windows .
Any way to do this under a nested foreach loop?
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I tried this code but got the error, " Error in { : task 1 failed - "non-numeric argument to mathematical function"