Yes, it actually is rather easy to do. I can check, but I think that should 
happen now (unless psm2 was set to auto-build if the lib was detected). 
Regardless, we can always have RH et al simply build with 
—enable-mca-no-build=mtl-psm2 and that will solve the problem.

Please keep us posted - and thanks!
Ralph

> On Sep 3, 2015, at 3:44 PM, Friedley, Andrew <andrew.fried...@intel.com> 
> wrote:
> 
> Hi Ralph & crew,
> 
> I'm representing the Intel PSM team to Open MPI.  They're aware of the 
> problem and have seen the comments on both this thread and in OFI, and are 
> working on solving the issue within PSM2.  Current estimate is that it will 
> take 3-4 weeks.
> 
> If it comes to removing the PSM2 MTL from 1.10, would it instead be possible 
> to disable it from being configured/built by default, unless specifically 
> requested using --with-psm2?
> 
> Andrew
> 
>> -----Original Message-----
>> From: devel [mailto:devel-boun...@open-mpi.org] On Behalf Of Ralph
>> Castain
>> Sent: Wednesday, September 2, 2015 6:22 PM
>> To: Open MPI Developers
>> Subject: [OMPI devel] 1.10.0 issue
>> 
>> Hi folks
>> 
>> I regret to say that 1.10.0 is hitting an issue with at least one upstream 
>> distro.
>> Apparently, there is a symbol conflict between the PSM and PSM2 libraries
>> that precludes building both of those MTLs at the same time. This is leading
>> the distro to push for release of two OMPI 1.10.0 builds - one with PSM and
>> the other with PSM2.
>> 
>> IMO, this is a very undesirable situation. I agree with the distro that 
>> delaying
>> release for some significant time as this would impact everyone else’s users.
>> Therefore, assuming that the PSM team is unable to quickly resolve the
>> problem in their libraries, my inclination is to release an immediate 1.10.1
>> with the PSM2 MTL removed.
>> 
>> I’m soliciting input - any opinions?
>> Ralph
>> 
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