Re: [BProc] bproc: iod: no daemon present to forward IO

[<er...@he...>]

On Thu, Nov 06, 2003 at 10:27:37AM -0500, gor...@ph... wrote:
> 
> Never saw this message before;
> 
> bproc: iod: no daemon present to forward IO
> 
> What does this message mean?

I means there's no daemon :) Normally the bproc master and slave
daemons fork to create an I/O daemon.  The purpose of that daemon is
basically to copy I/O from a remote job to whatever file descriptor
used to be on that job's stdout.  It's a bit of a hack to make
printf() work.

> Subsequent to this message, jobs which are rfork'd out to a slave node die
> as soon as they being to produce output.
> Jobs which are bpsh'ed out, work ok.  bproc version 3.2.5 on kernel 2.4.21.

Are you seeing this on the master or slave?  I presume the daemon is
getting created and dying for some reason.  Is there something
particular that you're doing cause this problem?  I haven't seen this
one myself.  My only guess as far a cause is concerned would be
resource exhaustion of some kind.

- Erik