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

[aemdad1 <aemdad1@triton.towson.edu>]

but bw_parse is the only procedure which will define bw ,so without bw_parse 
,bw has no meaning in the simulator ,so i think Bo Wen is right.

A Emdadi


>===== Original Message From Haobo Yu <haoboy@ISI.EDU> =====
>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 <bowen@mail.wsu.edu>
>> To: Haobo Yu <haoboy@ISI.EDU>
>> Cc: Kaleelazhicathu R R Kumar <iscp9133@nus.edu.sg>, ns-users@ISI.EDU
>> 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 <bowen@mail.wsu.edu>
>> > > To: Kaleelazhicathu R R Kumar <iscp9133@nus.edu.sg>
>> > > Cc: ns-users@ISI.EDU
>> > > 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:bowen@mail.wsu.edu]
>> > > > Sent: Saturday, July 08, 2000 8:18 AM
>> > > > To: ns-users@ISI.EDU
>> > > > 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
>> > >
>> > >
>>
>>