Recompiling ns

[Huiwen Li <huiwenli@nortelnetworks.com>]

Hi, all,

Thank you very much for all your valuable replies. Since I am a beginner in
NS, I probably asked or will ask some questions already asked before. I am
sorry for asking them again, but this is probably the fastest way to get an
answer. Thank you all for your patience.

Right now, I have another question. I defined a similar drop module as
DropTail, which adds some more functions. Then I added .o file in the
Makefile. And I tried to recompile NS, but the comipling just stopped at
that .o file and wouldn't process any more, seems like the machine goes
dead. But I think the two files I added .c .h are very simple. I am
wondering if I am missing some steps for compiling? Could any one give me
some advice?

Thanks a lot,
Huiwen


> -----Original Message-----
> From: George Riley [mailto:riley@cc.gatech.edu]
> Sent: Thursday, August 12, 1999 10:54 AM
> To: Haobo Yu
> Cc: Huiwen Li; ns-users@mash.CS.Berkeley.EDU
> Subject: Re: your mail
> 
> 
> You can just change the access mode parameter on the file open command
> (the one that creates the tcl file object for the trace file) to "a"
> instead of "w".  This will append the new traces to existing ones.
> Be careful with this though, the trace file will get big in a hurry.
> 
> George
> 
> 					
> 			-George F. Riley (riley@cc.gatech.edu)
> 		 	-Grad Student Liaison
> 
> 
> On Thu, 12 Aug 1999, Haobo Yu wrote:
> 
> > > If I want to run the same simulation for many times, only 
> changing some
> > > parameters, but I want to write data to the same trace 
> file, what should I
> > > do? Is there any such example? 
> > > 
> > > I tried to use a single $ns for the whole simulation, but 
> I am not sure if
> > > it is possible. Also I am confused about "$ns run". Is 
> there any parameter
> > > for Simulator instproc run? The original code has no 
> parameters defined, but
> > > the NS notes and documents mentioned there are args.
> > 
> > If you start and stop the simulation multiple times, 
> although you can
> > write to the same trace file, the result is a concatenation 
> of all trace
> > files, i.e., they are not continuous in time. 
> > 
> > I think a better way is to build your simulation so that 
> those different
> > sims with different params actually co-exist in a single run of
> > simulation. tcl/ex/rbp_demo.tcl is an example, where 3 
> different types of
> > TCP streams are run on 3 parallel (and identical) 
> topologies, but in the
> > same run... 
> > 
> > Of course doing postprocessing and combining traces there 
> is always an
> > option. 
> > 
> > - Haobo
> > 
> > 
> 
>