Craig Lam wrote:
> Hello,
>
> I am writing a soft real time application for use on a cluster whose
> MPI traffic goes over a secure network. (In a locked rack, only I have
> the password to any machine on the network) Since it is soft real
> time, I'd like to take advantage of Linux's SCHED_RR capabilities, but
> the kernel won't let me do this unless I execute as root. Currently
> I've compiling my kernel to allow any user to execute a SCHED_RR task,
> although this is unacceptable and hackish. Is there a simple way to
> allow lam to let root to run MPI programs? #defining
> LAM_ALLOW_RUN_AS_ROOT in ../lam- 7.1.1/share/include/lam_config.h.in
> and lam_config.h doesn't seem to do the trick. Any help is appreciated.
>
Hi Greg...
The following is a link to a module for 2.6 linux kernels that offers
realtime
capabilities to users(you can specify the group).
It was written and used for audio applications but maybe it will work
with lammpi as well.
http://www.joq.us/realtime
Rossen
|
