cloudRmpi v 1.2 is now available on CRAN. cloudRmpi is a means for doing parallel processing in R, using MPI on a cloud-based network. It currently supports the use of Amazon's EC2 cloud computer service. Changes in v 1.2: Support for RStudio. RStudio Server is available on new AMIs. cloudRmpi now has a function for securely connecting to an RStudio session running on the master node of an EC2-MPI network, via ssh port forwarding. (RStudio Server is a browser based, IDE-like interface to R). The network specification dialog shows more information about AMIs. The network manager has a command to repeat Open MPI network network configuration. Regards, Barnet Wagman