$ aptitude versions libopenmpi-dev
Package libopenmpi-dev:
i   2.1.1-8          bionic          500
Package libopenmpi-dev:i386:
p   2.1.1-8         bionic          500

$ sudo apt-get install libopenmpi-dev=2.1.6
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '2.1.6' for 'libopenmpi-dev' was not found

--Junchao Zhang

On Thu, Aug 1, 2019 at 1:15 PM Jeff Squyres (jsquyres) 
<jsquy...@cisco.com<mailto:jsquy...@cisco.com>> wrote:
Does the bug exist in Open MPI v2.1.6?

> On Jul 31, 2019, at 2:19 PM, Zhang, Junchao via users 
> <users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote:
> Hello,
>   I met a bug with OpenMPI 2.1.1 distributed in the latest Ubuntu 18.04.2 
> LTS. It happens with self to self send/recv using MPI_ANY_SOURCE for message 
> matching.  See the attached test code.  You can reproduce it even with one 
> process.
>   It is a severe bug. Since this Ubuntu is widely used and has long term 
> support, could it be somehow fixed?
>   Thanks a lot.
> --Junchao Zhang
> <any.c>_______________________________________________
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Jeff Squyres

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