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Re: [ns] Difference between 8Gb and 8000Mb?



No it does not. bw_parse is never used in setting bandwidth of a _link_.
trace down to new SimplexLink for instance, you'll find it went down to
tclcl and uses bw_atof() in Tcl.cc which does not handle Gb. So use 8000Mb
for now.

On Sat, 8 Jul 2000, Bo Wen wrote:

> Date: Sat, 08 Jul 2000 00:46:58 -0700
> From: Bo Wen <[email protected]>
> To: Haobo Yu <[email protected]>
> Cc: Kaleelazhicathu R R Kumar <[email protected]>, [email protected]
> Subject: Re: [ns] Difference between 8Gb and 8000Mb?
> 
> No..., just check out ns tcl code, Simulator::bw_parse{}can
> do with Gb now.
> 
> Haobo Yu wrote:
> 
> > ns does not parse Gb (which was not that popular 3 years ago) You
> > have to use 8000Mb for now.
> >
> > On Fri, 7 Jul 2000, Bo Wen wrote:
> >
> > > Date: Fri, 07 Jul 2000 21:10:53 -0700
> > > From: Bo Wen <[email protected]>
> > > To: Kaleelazhicathu R R Kumar <[email protected]>
> > > Cc: [email protected]
> > > Subject: Re: [ns] Difference between 8Gb and 8000Mb?
> > >
> > > No..., what I mean is bandwidth, not storage size.  For
> > > bandwidth, they shouble be same.  My question might not
> > > be clear:
> > >
> > > In my simulation, I defined all links with 8Gb, run ns;
> > > defined all links with 8000Mb, run ns again.  I just found
> > > the latter is much faster (I guess abround 100 times) than
> > > the former.
> > >
> > > Why, is that possible the variable (bind_bw) binding problem?
> > >
> > > Thanks,
> > >
> > > Bo
> > >
> > > Kaleelazhicathu R R Kumar wrote:
> > >
> > > > it should be the other way i guess ...
> > > > 8GB should be 8*1024*1024*1024=8589934592b
> > > > 8000Mb=8000*1024*1024=8388608000b
> > > > where 1024=1k
> > > > by normal convention
> > > > so 8Gb > 8000Mb
> > > >   Renjish...
> > > >
> > > > -----Original Message-----
> > > > From: Bo Wen [mailto:[email protected]]
> > > > Sent: Saturday, July 08, 2000 8:18 AM
> > > > To: [email protected]
> > > > Subject: [ns] Difference between 8Gb and 8000Mb?
> > > >
> > > > I've got a werid phenomen, that when I define link with 8Gb,
> > > > it runs 100(approximately) times slower than defining link
> > > > with 8000Mb.
> > > >
> > > > Seems I'll try 8000000b, see whether it runs faster?
> > > >
> > > > Thanks.
> > > >
> > > > Bo Wen
> > >
> > >
> 
>