The revised IOF design calls for several new cmd line options:
1. specify which procs are to receive stdin. The options that were to be supported are: all procs, a specific proc, or no procs. The default will be rank=0 only. All procs not included will have their stdin tied to /dev/null - which means a debugger could not attach to the stdin at a later time.
2. specify which stdxxx file descriptors you want left open on your procs. Our defaults are to leave stdout/stderr/stddiag open on all procs. This option would allow the user to specify that we tie any or all of these to /dev/null
3. tag output with [job,rank] on every line. I have currently defined this option to be --tag-output. It is "off" by default, though at least one user has questioned that it should be "on" by default.
Does anyone have suggestions as to the naming of these cmd line options, their behavior, and/or their default settings? Any additional requests?
Thanks Ralph
