[openib-general] Re: unable to run ibv_uc_pingpong and other example binaries

[Joe Damato]

Hal Rosenstock wrote:

>On Tue, 2005-07-19 at 12:49, Michael S. Tsirkin wrote:
>  
>
>>Quoting r. Joe Damato <damato at psc.edu>:
>>    
>>
>>>Subject: Re: unable to run ibv_uc_pingpong and other example binaries
>>>OK, just tried it, same problem:
>>>[root at frodo examples]# pwd
>>>/cluster/src/OPENIB_SRC/openib-2734/gen2/trunk/src/userspace/libibverbs/examples
>>>[root at frodo examples]# .libs/ibv_uc_pingpong
>>>libucm: Error <-1:6> couldn't open IB cm device </dev/infiniband/ucm>
>>>      
>>>
>>OK, this one is because you installed libibcm into 
>>/usr/local/lib/infiniband which is a plugin directory instead if
>>/usr/local/lib, so it goes.
>>
>>    
>>
>>>open("/usr/local/lib/infiniband/libibcm.so", O_RDONLY) = 3
>>>      
>>>
>>Simply remove /usr/local/lib/infiniband/libucm.so
>>and it will go away.
>>    
>>
>
>It appears to be invoking libucm just fine (the location is not the
>issue). The issue is ucm module is not started.
>
>  
>
ah yes, you are correct. I apologize for this -stupid- error on my part.

>>Longer term I think libucm config script must be fixed: libraries
>>go to /usr/local/lib by default. Hal?
>>    
>>
>
>As far as I know, the current agreed upon default is
>/usr/local/xxx/infiniband where xxx is lib and include.
>
>  
>
>>Hal, I also think it may not be such a good idea for a library
>>to start opening files and print things out to standard error
>>when its loaded.
>>Rather, a library should have some sane init/cleanup functions.
>>    
>>
>
>Due to hot swap or other issues ? I think all the user space libraries
>do this with perhaps the exception of libibverbs.
>
>-- Hal
>  
>