在Windows 7-package doSMP上使用64位R进行并行处理

2023年10月9日 187次阅读

我在
Windows 7上安装了R(64位)版本2.11.1,还从“REvolution foreach windows bundle”打包doSMP和revoIPC进行并行处理.然后我将库doSMP上传到R并从R获得以下消息

> library(doSMP)
Loading required package: revoIPC
Error: package 'revoIPC' is not installed for 'arch=x64'

如何解决这个问题？似乎doSMP工作在R的32位分布上,而不是64位分布.

我还测试了以下程序

------------------------------------------------------
require(doSMP)
workers <- startWorkers(4) # My computer has 2 cores
registerDoSMP(workers)

# create a function to run in each itteration of the loop
check <-function(n) {
 for(i in 1:1000)
 {
  sme <- matrix(rnorm(100), 10,10)
  solve(sme)
 }
}


times <- 10 # times to run the loop

# comparing the running time for each loop
system.time(x <- foreach(j=1:times ) %dopar% check(j))  #  2.56 seconds  (notice that the first run would be slower, because of R's lazy loading)
system.time(for(j in 1:times ) x <- check(j))  #  4.82 seconds

# stop workers
---------------------------------------------------------------------------

我收到了来自R的以下消息

> workers <- startWorkers(4) # My computer has 2 cores
Error: could not find function "startWorkers"
> registerDoSMP(workers)
Error: could not find function "registerDoSMP"

非常感谢您的帮助.

托尼

最佳答案 错误消息

Loading required package: revoIPC
Error: package 'revoIPC' is not installed for 'arch=x64'

非常明确：您运行的是64位R,但是您没有加载doSMP所需的所有子组件,特别是缺少revoIPC包.

如果您是Revo客户,请与他们联系.如果没有,那么也许你需要为R考虑不同的并行计算解决方案.

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