尝试 doSMP 示例时出错

我尝试运行 doSMP 小插图中的简单示例，但出现以下错误。首先，我不确定如何存在现有的 doSMP 会话，因为我在重新启动计算机后立即执行了下面的代码。此外，关于包 doSMP 不存在的重复错误，但库（doSMP）调用工作正常。帮助！

> librayr(doSMP)
Error: could not find function "librayr"
> library(doSMP)
Loading required package: foreach
Loading required package: iterators
Loading required package: codetools
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Loading required package: revoIPC
Warning messages:
1: package 'doSMP' was built under R version 2.13.1
2: package 'foreach' was built under R version 2.13.1
3: package 'revoIPC' was built under R version 2.13.1
> w <- startWorkers(workerCount=4)
Warning messages:
1: In startWorkers(workerCount = 4) :
  there is an existing doSMP session using doSMP1
2: In startWorkers(workerCount = 4) :
  there is an existing doSMP session using doSMP2
> Error in library(doSMP) : there is no package called 'doSMP'
Calls: suppressMessages -> withCallingHandlers -> library
Execution halted
Error in library(doSMP) : there is no package called 'doSMP'
Calls: suppressMessages -> withCallingHandlers -> library
Execution halted
Error in library(doSMP) : there is no package called 'doSMP'
Calls: suppressMessages -> withCallingHandlers -> library
Execution halted
Error in library(doSMP) : there is no package called 'doSMP'
Calls: suppressMessages -> withCallingHandlers -> library
Execution halted

结束这个问题 - 该软件包的缺陷太多，无法使用。如果其他人已经让它可靠地工作，那么请回复，我将取消将此帖子标记为答案。