[ofa-general] Re: Dapl 2 question/issue

[Tang, Changqing]

So can we install both v1 and v2 packages on a system ? At the install time, we don't know the app will run on v1 or v2.

--CQ

> -----Original Message-----
> From: Arlin Davis [mailto:ardavis at ichips.intel.com]
> Sent: Tuesday, January 29, 2008 3:46 PM
> To: Doug Ledford
> Cc: Tang, Changqing; general
> Subject: Re: [ofa-general] Re: Dapl 2 question/issue
>
> Doug Ledford wrote:
> >
> > You *should* be claiming that regardless.  The API between
> dapl-1 and
> > dapl-2 changed, some of which is fixed simply be
> recompiling and some
> > of which requires actual code changes.  Just because the
> library name
> > is the same doesn't mean that code built and compiled
> against dapl-1
> > could or should attempt to run against dapl-2 (unless I'm
> wrong here,
> > Arlin should really speak to this issue...if the dapl-2 libraries
> > provide backward compatible symbols via so symbol versions, then it
> > might be possible for a dapl-1 program to run against the dapl-2
> > library, but then that would beg the question of why we are still
> > distributing dapl-1 libraries in a separate package, so I'm
> guessing
> > there is not a back compatible layer in the dapl-2 library).
>
> You are correct. dapl-1 programs cannot run against dapl-2.
> That is why both v1 and v2 packages are provided. We have to
> support existing v1 applications while providing a transition
> path to v2.
>
> -arlin
>
>