[ewg] RE: [ofa-general] how do I use uDAPL with iWARP?

[Davis, Arlin R]

>-----Original Message-----
>From: ewg-bounces at lists.openfabrics.org 
>[mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Scott 
>Weitzenkamp (sweitzen)
>Sent: Wednesday, April 02, 2008 4:29 PM
>To: Joshua Bernstein
>Cc: OpenFabrics EWG; [ofa_general]
>Subject: [ewg] RE: [ofa-general] how do I use uDAPL with iWARP?
>
>> > I tried that, and it didn't work:
>> >
>> > [root at svbu-qa2950-1 ~]# grep eth /etc/dat.conf
>> > OpenIB-cma u1.2 nonthreadsafe default libdaplcma.so.1 dapl.1.2  
>> > "eth2 0"
>> > ""
>> > [root at svbu-qa2950-1 ~]# dtest
>> > 10194 Running as server - OpenIB-cma
>> > 10194 Error dat_ep_create: DAT_INVALID_HANDLE
>> > 10194 Error freeing EP: DAT_INVALID_HANDLE DAT_INVALID_HANDLE_EP
>> 

Scott,

I don't have any iWARP adapters so I am guessing here. Usually it is 
an attributes issues with QP create. The dtest is possibly setting QP 
attributes beyond the device max values. Can you do a ibv_devinfo -v and

send the output. Also, do you know if this device supports inline_data? 
uDAPL creates the QP with inline_data set to 64 bytes by default. You
can 
override this with enviroment variable DAPL_MAX_INLINE.

Also, uDAPL uses cma. Did you happen to test with "ib_rdma_lat -c" ?

-arlin