Re: [ns] problem when running nam

[Shuju Wu <swu@mail.sis.pitt.edu>]

Thanks, and please check this: (I'm not good at Unix)

1. I got that error message because I telnet from my 
workstation to a faster processor in the same system, 
and used EXPRORT DISPLAY. If I run NAM in my workstation, 
then it works.

2. I'm not working on mobile simulations, but I used 
the on-off traffic generator, where random numbers are 
used.

Wu


On Tue, 5 Jun 2001, Lloyd Wood wrote:

> On Tue, 5 Jun 2001, Shuju Wu wrote:
> 
> > It's in the all-in-one package, in both 2.1b6 
> > and 2.1b7 this happens now. But a year ago, 
> > I used 2.1b6, there was no this problem.
> > (all on Solaris). Someone please, help me.
> 
> Any changes in version(s) of Solaris? Of your compiler?
> My best guess is that you're doing mobility simulations,
> and that in nam:
> 
> [~nam]$ grep random\(\) *.cc
> anetmodel.cc:	    ((Random::random()&0xffff)/32768.0 - 1.0);
> anetmodel.cc:	    ((Random::random()&0xffff)/32768.0 - 1.0);
> random.cc:random() GCC_THROW
> random.cc:	printf("random() called in ns.\nRandom is not portable,
> please use Random::uniform() instead.\n");
> 
> is causing your problem. (That error message needs fixing to
> indicate whether ns or nam...)
> 
> In ns there's still:
> 
> mobilenode.cc:	dX_ = (double) Random::random();
> mobilenode.cc:	dY_ = (double) Random::random();
> 
> which is odd after all, Random::uniform() returns a double anyway, and
> I've never even heard of uniform_positive_int().
> 
>         static int random() { return rng()->uniform_positive_int(); }
>         static double uniform() { return rng()->uniform_double();}
> 
> Code says:
> 
> void
> MobileNode::random_direction()
> {
>  /* this code isn't used anymore -dam 1/22/98 */
> 
> so why is it there?
> 
> Edit, recompile, report how you get on.
> 
> L.
> 
> > > > Can anyone help me with this?
> > > > after I generate out.nam file and ran NAM, 
> > > > an error message said:
> > > > 
> > > > random() called in ns.
> > > > Random is not portable, please use Random::uniform() instead.
> > > > Abort
> 
> <L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>
> 
>