netSimulator & multiple cores about bootnet

[SachaEpskamp]

The example codes in ?netSimulator work fine for me. Can you give a reproducible example?

Best, Sacha

[mjbsp]

Thanks Sacha,

The code that I included in the original post reproduces the problem on my computer.

# R version 3.5.1 (2018-07-02) -- "Feather Spray"
# Platform: x86_64-apple-darwin15.6.0 (64-bit)
install.packages("bootnet")
library(bootnet)
# This is bootnet 1.1.0
netSimulator()
netSimulator(nCores = 2)

The code from ?netSimulator also gives me the same error as the prior code. Specifically, the following code gives the error

library("psych")
data(bfi)
bfiData <- bfi[,1:25]

# Estimate a network structure, with parameters refitted without LASSO regularization:
library("qgraph")
Network <- EBICglasso(cor_auto(bfiData), nrow(bfiData), refit = TRUE)

# Simulate 100 repititions in 2 cores under different sampling levels:
Sim1 <- netSimulator(Network,
                     default = "EBICglasso",
                     nCases = c(100,250,500),
                     nReps = 100,
                     nCores = 2)

However, when I remove nCores = 2, the code works fine

# Simulate 100 repititions under different sampling levels without specifying cores (1 core):
Sim2 <- netSimulator(Network,
                     default = "EBICglasso",
                     nCases = c(100,250,500),
                     nReps = 100)

I have now been able to try all of this code on a Windows machine and it works on this other machine using the same version of R and bootnet. So, I recognize that this might be something wrong with my machine. I tried updating my version of R, but the problem persists. I've tried updating packages and the problem persists.

I don't expect you to do individual tech support for my wayward machine, but if you have any ideas let me know. Otherwise, I'll just be patient and use the code on the machine where it works.