Re: [hwloc-devel] Using Hwloc in LLVM OpenMP

[Peyton, Jonathan L]

Is it alright if I can have the current CMake work if you still have it?

-- Johnny

From: Brice Goglin [mailto:brice.gog...@inria.fr]
Sent: Monday, May 18, 2015 2:04 PM
To: Peyton, Jonathan L
Cc: Hardware locality development list; Cownie, James H; Wilmarth, Terry L
Subject: Re: [hwloc-devel] Using Hwloc in LLVM OpenMP

Le 18/05/2015 20:49, Peyton, Jonathan L a écrit :
Hello Everyone,

We have been developing The LLVM OpenMP runtime library project and were hoping 
to incorporate the hwloc library as the primary affinity mechanism.  In order 
for this to happen though,
a CMake build system would have to be created as it is now the primary build 
system of both LLVM and the LLVM OpenMP runtime library.  It offers better 
native Windows support (no config/compile cl hackery), just as much
configuration capability as the autotools at a fraction of the effort.  It is 
also easier to maintain by more developers because the CMake language is easier 
to learn and has superior documentation.

So a couple of questions:
1) Is anyone currently working on a CMake build system for hwloc?
2) Would someone inside hwloc development be interested in building a CMake 
build system?
3) If we were to implement a quality CMake build system, would it be accepted?

Plus, any other comments or questions are absolutely welcome.

-- Johnny


Hello

I have spent a bit of time on CMakifing hwloc in the past, mostly for windows 
support, but I didn't have much knowledge about CMake, so it didn't go far. 
Somebody offered Windows vcxproj files later, so we integrated those and I 
forgot about CMake. The main issue is about periodic testing. I basically can't 
do it manually often enough (nightly testing is done using Mingw only). Our 
vcxproj are already outdated for this reason.

So
(1) not currently as far I as know
(2) yes
(3) it won't replace autotools since we have autotools-projects embedding 
hwloc. if we can have both autotools and cmake without too much trouble, I 
guess it's ok

Brice

Re: [hwloc-devel] Using Hwloc in LLVM OpenMP

[Jeff Squyres (jsquyres)]

On May 18, 2015, at 3:03 PM, Brice Goglin  wrote:
> 
> (3) it won't replace autotools since we have autotools-projects embedding 
> hwloc. if we can have both autotools and cmake without too much trouble, I 
> guess it's ok

Since cmake likely won't be the main configure/build system for the core 
developers, it is going to be a challenge to keep the cmake build system 
up-to-date as changes are made in the autotools-based build system.

(I speak from experience: we had a cmake build system in Open MPI for a while 
for Windows support that was constructed / maintained along side the autotools 
configure/build system, and it was continually out of date :-( )

-- 
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to: 
http://www.cisco.com/web/about/doing_business/legal/cri/

Re: [hwloc-devel] Using Hwloc in LLVM OpenMP

[Brice Goglin]

Le 18/05/2015 20:49, Peyton, Jonathan L a écrit :
>
> Hello Everyone,
>
>  
>
> We have been developing The LLVM OpenMP runtime library project and
> were hoping to incorporate the hwloc library as the primary affinity
> mechanism.  In order for this to happen though,
>
> a CMake build system would have to be created as it is now the primary
> build system of both LLVM and the LLVM OpenMP runtime library.  It
> offers better native Windows support (no config/compile cl hackery),
> just as much
>
> configuration capability as the autotools at a fraction of the
> effort.  It is also easier to maintain by more developers because the
> CMake language is easier to learn and has superior documentation.
>
>
> So a couple of questions:
>
> 1) Is anyone currently working on a CMake build system for hwloc?
>
> 2) Would someone inside hwloc development be interested in building a
> CMake build system?
>
> 3) If we were to implement a quality CMake build system, would it be
> accepted?
>
>  
>
> Plus, any other comments or questions are absolutely welcome.
>
>  
>
> -- Johnny
>
>  
>

Hello

I have spent a bit of time on CMakifing hwloc in the past, mostly for
windows support, but I didn't have much knowledge about CMake, so it
didn't go far. Somebody offered Windows vcxproj files later, so we
integrated those and I forgot about CMake. The main issue is about
periodic testing. I basically can't do it manually often enough (nightly
testing is done using Mingw only). Our vcxproj are already outdated for
this reason.

So
(1) not currently as far I as know
(2) yes
(3) it won't replace autotools since we have autotools-projects
embedding hwloc. if we can have both autotools and cmake without too
much trouble, I guess it's ok

Brice

[hwloc-devel] Using Hwloc in LLVM OpenMP

[Peyton, Jonathan L]

Hello Everyone,

We have been developing The LLVM OpenMP runtime library project and were hoping 
to incorporate the hwloc library as the primary affinity mechanism.  In order 
for this to happen though,
a CMake build system would have to be created as it is now the primary build 
system of both LLVM and the LLVM OpenMP runtime library.  It offers better 
native Windows support (no config/compile cl hackery), just as much
configuration capability as the autotools at a fraction of the effort.  It is 
also easier to maintain by more developers because the CMake language is easier 
to learn and has superior documentation.

So a couple of questions:
1) Is anyone currently working on a CMake build system for hwloc?
2) Would someone inside hwloc development be interested in building a CMake 
build system?
3) If we were to implement a quality CMake build system, would it be accepted?

Plus, any other comments or questions are absolutely welcome.

-- Johnny