Currently the target is RH 8
And yes, UCX is also available on EPEL, for example:

-----Original Message-----
From: Peter Kjellström <> 
Sent: Thursday, September 20, 2018 2:11 PM
To: Yossi Itigin <>
Cc: Open MPI Developers <>
Subject: Re: [OMPI devel] Announcing Open MPI v4.0.0rc1

On Thu, 20 Sep 2018 09:03:44 +0000
Yossi Itigin <> wrote:

> Hi,
> UCX is on the way into RH distro and will be available and ON by 
> default (auto-detectable by OMPI build process) automatically in the 
> near future.

That is good to hear, already in the upcomming 7.6?
> Meanwhile, user can enable UCX by two methods:
> 1. Download & Install UCX from and Build openmpi with it.
> 2. Download HPC-X from Mellanox site (openmpi pre-compiled and 
> packaged with UCX) for distro of interest (User can re-compile the 
> package with site default as well)

There's even:
 3. enable epel and install it from there.

/Peter K
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