[openib-general] Re: [uDAPL] dat.conf generator

[Dotan Barak]

On Monday 24 April 2006 17:33, James Lentini wrote:
> 
> On Sun, 23 Apr 2006, Dotan Barak wrote:
> 
> > 
> > If in automatic way i will create a dat.conf that will have the following lines (on a machine with 2 HCAs, 2 port in each HCA):
> > 
> > OpenIB-cma u1.2 nonthreadsafe default /usr/lib/libdaplcma.so mv_dapl.1.2 "ib0 0" ""
> > OpenIB-cma0 u1.2 nonthreadsafe default /usr/lib/libdaplcma.so mv_dapl.1.2 "ib0 0" ""
> > OpenIB-cma1 u1.2 nonthreadsafe default /usr/lib/libdaplcma.so mv_dapl.1.2 "ib1 0" ""
> > OpenIB-cma2 u1.2 nonthreadsafe default /usr/lib/libdaplcma.so mv_dapl.1.2 "ib2 0" ""
> > OpenIB-cma3 u1.2 nonthreadsafe default /usr/lib/libdaplcma.so mv_dapl.1.2 "ib3 0" ""
> > 
> > In this file, there is a dapl provider name for every IPoIB I/F, and 
> > still there is a default entry (the first I/F).
> > 
> > Is this is usefull?
> 
> Arlin was pointing out that the uDAPL CMA provider requires an IP 
> address value, not a device name string:
> 
> OpenIB-cma u1.2 nonthreadsafe default libdapl.so of_udapl.1.2 "192.168.0.47 1" ""
> 
> The uDAPL CMA provider only uses the port value to check the device 
> attributes, so the IP addr is the most important way to specify the 
> device.
> 
> Naming the uDAPL providers OpenIB-cma0, OpenIB-cma1, OpenIB-cma2, ... 
> makes sense, but remember that it is the IP address that will 
> determine which device they map to.
> 
> Having a default provider, OpenIB-cma, is useful.

o.k,, so the generated file will have the following line for all of the IPoIB I/Fs:
OpenIB-cmaX u1.2 nonthreadsafe default libdapl.so of_udapl.1.2 "192.168.0.47 1" ""  (X run from 0 to n)
and a default OpenIB-cma which will be the first IPoIB I/F that was found.

i have 2 more questions:
1) what is the number after the IP? (ib port? starts from which value?)
2) do you need any lines with the scm ? (if the answer is yes, can you please send me an example line?)

thanks
Dotan