[openib-general] A few questions about IBMgtSim

[Eitan Zahavi]

Hi Sven,

Currently there is no way to scale simulation time to real time. 
The main reason is that the time scale is mixed:
* OpenSM calculation time is about the same (if you run the simulator on
remote node)
* SMA time and packet traversal time is not scaling at all and the
larger the fabric the larger the scaling factor. In real life the
hardware handles the packets in simulation it is a single CPU 

EZ

Eitan Zahavi
Senior Engineering Director, Software Architect
Mellanox Technologies LTD
Tel:+972-4-9097208
Fax:+972-4-9593245
P.O. Box 586 Yokneam 20692 ISRAEL


> -----Original Message-----
> From: Sven-Arne Reinemo [mailto:svenar at simula.no]
> Sent: Friday, June 30, 2006 4:30 PM
> To: Eitan Zahavi
> Cc: openib-general at openib.org
> Subject: Re: [openib-general] A few questions about IBMgtSim
> 
> Anno Domini 19-06-2006 21:24, Eitan Zahavi wrote:
> > Hi Sven,
> >
> > Please see my response below:
> 
> Thanks for your help. I have another question regarding time scales in
> simulations. When the SM is used with the simulator how do I find the
> simulated time for events? I.e. if I run a simulation where it takes
the
> SM 1 hour to get to subnet up (wallclock time) how do I find/calculate
> the time it took according to the simulator clock?
> 
> Best regards,
> 
> --
> Sven-Arne Reinemo
> [simula.research laboratory] http://www.simula.no/
> ++++ GnuPG public key - http://home.simula.no/~svenar/gpg.asc ++++