[問題] 無法使用平行運算makeCluster()

[forever87062 (劉A.y)]

大家好，我大部分是使用R作統計運算，約有使用兩年的經驗，想請教有
關無法使用makeCluster()的問題，在之前有在其他電腦使用過程式是沒
有問題的，但是這台工作用的windows 10 桌電(去年才買)卻無法使用，
有點不知道怎麼解決，想請教大家有沒有什麼建議，或有遇過類似事情
的經歷


我是執行以下的程式
library(parallel)
myCoreNums <- detectCores()
cl <- makeCluster(myCoreNums -1)

但是我的電腦卻執行一整天都還卡在makeCluster()的地方，非常奇怪，
我就手動中斷了R，於是我也試過了cl <- makeCluster(2) 但也卡了很
久，覺得不太尋常。後來用這個方式，出現以下的訊息
cl <- future::makeClusterPSOCK(1L, verbose = TRUE, outfile = NULL)

----------以下為error code 的訊息-----------------------

> cl <- future::makeClusterPSOCK(1L, verbose = TRUE, outfile = NULL)
[local output] Workers: [n = 1] ‘localhost’
[local output] Base port: 11234
[local output] Creating node 1 of 1 ...
[local output] - setting up node
Testing if worker's PID can be inferred: ‘C:/PROGRA~1/R/R-35~1.3/
bin/x64/Rscript -e "try(cat(Sys.getpid(),file=\"C:/Users/xxxxx/
AppData/Local/Temp/RtmpsVKdaV/future.parent=20556.504c2b692669.p
id\"), silent = TRUE)" -e "file.exists(\"C:/Users/xxxxx/AppData/
Local/Temp/RtmpsVKdaV/future.parent=20556.504c2b692669.pid\")"’
- Possible to infer worker's PID: FALSE
[local output] Starting worker #1 on ‘localhost’: "C:/PROGRA~1
/R/R-35~1.3/bin/x64/Rscript" --default-packages=datasets,utils,
grDevices,graphics,stats,methods -e "parallel:::.slaveRSOCK()"
 MASTER=localhost PORT=11234 OUT= TIMEOUT=2592000 XDR=TRUE
[local output] - Exit code of system() call: 0
[local output] Waiting for worker #1 on ‘localhost’ to connect back
[local output] - Detected 'outfile=NULL' on Windows: this will make
the output from the background worker visible when running R from a
terminal, but it will most likely not be visible when using a GUI.
Error in socketConnection("localhost", port = port, server = TRUE, blocking = TRUE,  :
  Failed to launch and connect to R worker on local machine ‘localhost’
 from local machine ‘DESKTOP-OUUF46V’.
 * The error produced by socketConnection() was: ‘reached elapsed time limit’
 (which suggests that the connection timeout of 120 seconds
 (argument 'connectTimeout') kicked in)
 * The localhost socket connection that failed to connect to the R worker used
 port 11234 using a communication timeout of 2592000 seconds and a connection timeout
 of 120 seconds.
 * Worker launch call: "C:/PROGRA~1/R/R-35~1.3/bin/x64/Rscript" --default-
packages=datasets,utils,grDevices,graphics,stats,methods -e "parallel:::.slaveRSOCK()"
 MASTER=localhost PORT=11234 OUT= TIMEOUT=2592000 XDR=TRUE.
 * Failed to kill local worker because it's PID is could not be identified.
 * Troubleshooting suggestions:
   - Suggestion #1: On Windows, to see output from worker,
set 'outfile=NULL' and run R from a terminal (not a GUI).
In addition: Warning message:
In system(test_cmd, intern = TRUE, input = input) :
  running command 'C:/PROGRA~1/R/R-35~1.3/bin/x64/Rscript -e "try(cat
(Sys.getpid(),file=\"C:/Users/xxxxx/AppData/Local/Temp/RtmpsVKdaV/future.parent=20556
.504c2b692669.pid\"), silent = TRUE)" -e "file.exists(\"C:/Users/xxxxx/AppData/Local
/Temp/RtmpsVKdaV/future.parent=20556.504c2b692669.pid\")"' had status 1
>

------------------------------------------------------------

我也查了一下網路上相關資料，只有一個提到可能是跟防火牆有關，我也曾經關掉防火牆
(https://support.microsoft.com/zh-tw/help/4028544/windows-10-turn-windows-defender-firewall-on-or-off)
再執行一次，但是也同樣不行，有點不是很清楚該怎麼修復這樣的情形，
想請教版上的大家有沒有什麼方法或建議可以解決了，謝謝!









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推 st1009: 或許防火牆沒關乾淨吧，如果在學校公司，也要注意他們的防
→ st1009: 火牆
推 ruokcnn: 按照他說的trouble shoot走看看
→ ruokcnn: 從cmd跑makeCluster 設output = null
→ ruokcnn: *outfile=NULL