[openib-general] Fork issues with simple MPI program

Tziporet Koren tziporet at mellanox.co.il
Tue Feb 20 12:01:32 PST 2007


Arlin Davis wrote:
>  
> OFED 1.2 alpha (libibverbs 1.1) on 2.6.20 fails the same way. Does the following disclaimer still
> apply?
>
> "Fork support from kernel 2.6.12 and above is available provided
> that applications do not use threads. The fork() is supported as long
> as parent process does not run before child exits or calls exec().
> The former can be achieved by calling wait(childpid) the later can be
> achieved by application specific means.  Posix system() call is
> supported."
>
>   
As replied before - if you want full fork support you need to change the 
application. Look at the verbs header for details.

Tziporet





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