Avoiding Excess Brower Windows with Parallel RStan

Operating System: OS X 10.12.6
Interface Version: 12.7.2

When calling the stan or sampling methods in RStan after parallel::detect_cores has been called each of the parallel processes open up a new HTTP socket for dumping the chain output. Is there a way to dump the output to dev/null or otherwise avoid the HTTP sockets being opened? I’m looping over many fits and want to avoid a thousand browser windows being opened in quick succession.

There is an open_progress argument that should be set to FALSE.

Perfect, thanks.