Bug#962189: ITP: ucx -- A high performance communication library for HPC, AI, Data analytics, and beyond

[Alastair McKinstry <mckinstry@debian.org>]

Hi,

I've been told UCX is now the default, for openmpi 4.0*

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962180

Is there some performance work to point to ?

Regards

Alastair


On 11/06/2020 10:14, Brice Goglin wrote:
> Hello
>
> You say "It is expected to use UCX as the transport layer under openmpi
> and mpich". It is actually optional, OpenMPI works fine without UCX on
> non-Mellanox networks. Worse, UCX says it supports some networks such as
> OPA while its actual performance is very bad, people have to uninstall
> UCX in such cases, or reduce its component priority. Do you plan to make
> a hard dependency from OMPI to UCX?
>
> Brice
>
>
> Le 04/06/2020 à 12:38, Alastair McKinstry a écrit :
>> Package: wnpp
>> Severity: wishlist
>> Owner: Alastair McKinstry <mckinstry@debian.org>
>>
>> * Package name    : ucx
>>   Version         : 1.8.0
>>   Upstream Author : Mellanox Ltd. <support@mellanox.com>
>> * URL             : https://openucx.github.io/ucx/index
>> * License         : BSD
>>   Programming Lang: C
>>   Description     : A high performance communication library for HPC, AI, Data analytics, and beyond
>>
>> Unified Communication X (UCX) provides an optimized communication layer for
>> Message Passing (MPI), PGAS/OpenSHMEM libraries and RPC/data-centric applications.
>> .
>> UCX utilizes high-speed networks for inter-node communication,
>> and shared memory mechanisms for efficient intra-node communication.
>> .
>> It is expected to use UCX as the transport layer under openmpi and mpich (already in Debian).
>> .
>> It will be maintained within the Debian Science team.
>>
-- 
Alastair McKinstry, <alastair@sceal.ie>, <mckinstry@debian.org>, https://diaspora.sceal.ie/u/amckinstry
Misentropy: doubting that the Universe is becoming more disordered.