[openib-general] Re: uDAPL again

[Hal Rosenstock]

On Wed, 2005-11-02 at 14:01, James Lentini wrote:
> On Wed, 2 Nov 2005, Aniruddha Bohra wrote:
> 
> > James Lentini wrote:
> > 
> > > On Wed, 2 Nov 2005, Aniruddha Bohra wrote:
> > > 
> > >  
> > > > Hello,
> > > >   The following is the log for a request I am sending,
> > > > 
> > > > The number of IOVs for req is 2. And the iov is shown below :
> > > > 
> > > > REQ[0] = (0xb5f3f100, 48, 0xca88003b)^M
> > > > REQ[1] = (0xb5f3f2b8, 152, 0xca88003b)^M
> > > > 
> > > > dapl_ep_post_send (0x8087110, 2, 0x808b300, 0xb5f3f6b4, 0)^M
> > > > dapl_ep_post_send : LOCALIOV[0] = (0xb5f3f100, 48, 0xca88003b)^M
> > > > dapl_ep_post_send : LOCALIOV[1] = (0xb5f3f2b8, 152, 0xca88003b)^M
> > > > post_snd: ep 0x8087110 op 2 ck 0x8087374 sgs 2 l_iov 0x808b300 r_iov
> > > > 0xbf964290 f 0^M
> > > > post_snd: ep 0x8087110 cookie 0x8087374 segs 2 l_iov 0x808b300^M
> > > > post_snd_localiov: lkey 0xca88003b va 0xb5f3f100 len 48 ^M
> > > > post_snd: lkey 0xca88003b va 0xb5f3f100 len 48 ^M
> > > > post_snd_localiov: lkey 0xca88003b va 0xb5f3f2b8 len 152 ^M
> > > > post_snd: lkey 0xca88003b va 0xb5f3f2b8 len 152 ^M
> > > > post_snd: op 0x2 flags 0x2 sglist 0xbf9641b0, 2^M
> > > > post_snd: returned^M
> > > > dapl_ep_post_send () returns 0x0^M
> > > > dapl_evd_wait (0x8083ca0, -1, 1, 0xbf9642d0, 0xbf9642cc)^M
> > > > dapl_evd_wait: EVD 0x8083ca0, CQ 0x8083da0^M
> > > > cq_object_wait: CQ channel 0x8081290 time -1^M
> > > > cq_object_wait: RET evd 0x8083ca0 ibv_cq 0x8083da0 ibv_ctx (nil) Success^M
> > > >        >>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<^M
> > > >        dapl_evd_dto_callback : CQE ^M
> > > >                work_req_id 134771572^M
> > > >                status 12^M
> > > >    
> > > 
> > > Status 12 is IBV_WC_RETRY_EXC_ERR.
> > > 
> > > Are you sure you can communicate over IB? Do pings over IPoIB work, etc.?
> > > 
> > >  
> > bohra at hora-3 ~]$ ping -b 10.10.10.255
> > WARNING: pinging broadcast address
> > PING 10.10.10.255 (10.10.10.255) 56(84) bytes of data.
> > 64 bytes from 10.10.10.12: icmp_seq=0 ttl=64 time=0.034 ms
> > 64 bytes from 10.10.10.13: icmp_seq=0 ttl=64 time=8.98 ms (DUP!)
> > 64 bytes from 10.10.10.12: icmp_seq=1 ttl=64 time=0.033 ms
> > 64 bytes from 10.10.10.13: icmp_seq=1 ttl=64 time=0.095 ms (DUP!)
> > 64 bytes from 10.10.10.12: icmp_seq=2 ttl=64 time=0.025 ms
> > 64 bytes from 10.10.10.13: icmp_seq=2 ttl=64 time=0.096 ms (DUP!)
> > 
> > --- 10.10.10.255 ping statistics ---
> 
> 
> I don't see DUPs when I ping the broadcast address. 

I get dups. This is ping. When using the subnet broadcast address, it
does not distriguish that the replies are different; just that it got
multiple replies for a single request. It may depend on the version of
ping.

-- Hal

> Is it possible 
> another machine is configured with the same IP address?
> 
> Do you only have the one OpenIB node?
> 
> > 3 packets transmitted, 3 received, +3 duplicates, 0% packet loss, time 2020ms
> > rtt min/avg/max/mdev = 0.025/1.544/8.986/3.328 ms, pipe 2
> > [bohra at hora-3 ~]$ ifconfig ib0
> > ib0       Link encap:UNSPEC  HWaddr
> > 00-00-04-04-FE-80-00-00-00-00-00-00-00-00-00-00
> >          inet addr:10.10.10.12  Bcast:10.255.255.255  Mask:255.255.255.0
> >          inet6 addr: fe80::202:c901:81e:7471/64 Scope:Link
> >          UP BROADCAST RUNNING MULTICAST  MTU:2044  Metric:1
> >          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
> >          TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
> >          collisions:0 txqueuelen:128
> >          RX bytes:308 (308.0 b)  TX bytes:4788 (4.6 KiB)
> > 
> > My target is the filer, which does not respond to pings (10.10.10.11).
> > 
> > Aniruddha
> > 
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