Making clusters for parallelized functions

[hikari-murayama]

Describe the bug
It seems to be a known issue that parallel::makeCluster "freezes" for certain versions of RStudio (rstudio/rstudio#6692). With some eiCompare functions involving parallelization options, this will cause issues for users who are using certain versions of RStudio.

To Reproduce
Steps and code to reproduce the behavior:

1. Run ei_iter on RStudio (could be 1.3.944, 1.2.5042, or other) locally with R 4.X
2. Load Corona data from Package
3. Run ei_iter with par_compute == TRUE

Expected behavior
An Error should pop up that says Error in makePSOCKcluster and Cluster setup failed

Screenshots

Environment information:

• eiCompare version: 3.0
• Mac (Catalina)
• R Studio 1.3.944

Additional context
It seems like this can resolved either by

1. Installing a Preview version of RStudio
2. Setting a time out parameter when we call makeCluster
3. Installing July release of R: Rstudio v1.3.1056

[hikari-murayama]

When running eiCompare, the error will read along the lines of "task 2 failed".

In that event please update the newest version of Rstudio, which as of this comment is, 1.4.1103.