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From Konstantin Ivlev <tomsks...@gmail.com>
Subject Re: using conan to manage Apache Incubator MXNet project dependencies
Date Tue, 27 Nov 2018 15:59:56 GMT
>  Would it be possible to define cmake itself as a conan dependency for
MXNet?
yes, it is definitely possible
for instance, to declare CMake 3.13.0 as a dependency, the following line
has to be added to the conanfile.py:

build_requires = "cmake_installer/3.13.0@conan/stable"

other build tools might be added in a similar manner.

вт, 27 нояб. 2018 г. в 22:54, Anton Chernov <mechernov@gmail.com>:

> I think I asked this already, but want to confirm in regards to the
> following discussion:
>
> MXNet CMake build - raise minimal required version
>
> https://lists.apache.org/thread.html/09772f9447ebff72cdfea5512ae70e295db8a21ba0ddb39359cd0a77@%3Cdev.mxnet.apache.org%3E
>
> Would it be possible to define cmake itself as a conan dependency for
> MXNet?
>
> Best
> Anton
>
> вт, 27 нояб. 2018 г. в 15:44, Konstantin Ivlev <tomskside@gmail.com>:
>
> > both questions are totally valid.
> > > Is it easy to create a build which will build dependencies from source?
> > 1. yep, it's very easy, just add `--build` argument to the `conan
> install`
> > command line
> > >  What guarantees you get with conan with regards to ABI / C++ stdlib
> > binary compatibility of the pulled dependencies?
> > 2. the default binary compatibility model may be found in settings.yml (
> >
> >
> https://github.com/conan-io/conan/blob/develop/conans/client/conf/__init__.py#L14
> > )
> > it includes the operation system, architecture, compiler, its version and
> > C++ stdlib.
> > while it's true that it won't cover 100% of use-cases (e.g. for older
> > distros or older glibc), it's very good default for most users.
> > you may always define custom binary compatibility attributes in your
> > settings.yml (e.g. distro, microarchitecture, sanitizers, etc.).
> >
> >
> > вт, 27 нояб. 2018 г. в 21:17, Pedro Larroy <pedro.larroy.lists@gmail.com
> >:
> >
> > > Thanks both for the detailed explanations. Couple of more questions:
> > >
> > > Is it easy to create a build which will build dependencies from source?
> > > What guarantees you get with conan with regards to ABI / C++ stdlib
> > > binary compatibility of the pulled dependencies?
> > >
> > > Just to clarify: My concerns are in terms of reproducible builds /
> > > source only distribution and undefined behaviour due to different
> > > compiler / stdlib versions. Are these valid or is it oudated
> > > knowledge?
> > >
> > > Pedro.
> > > On Tue, Nov 27, 2018 at 2:34 PM Diego Rodriguez-Losada
> > > <diego.rlosada@gmail.com> wrote:
> > > >
> > > > Hi Pedro,
> > > >
> > > > Conan is distributed. So besides building from sources the
> > dependencies,
> > > it
> > > > is also possible to create binaries yourself for those dependencies
> > (with
> > > > the existing recipes, or your own recipes), and host them in your own
> > > repo
> > > > (Bintray OSS repo, or Artifactory).
> > > >
> > > > This will provide both the security that you own the dependencies
> > > binaries
> > > > and the convenience and speed of not having to build from sources.
> Even
> > > if
> > > > you provide the binaries, consumers can always fallback to build from
> > > > sources too.
> > > >
> > > > Kind regards,
> > > > Diego
> > > >
> > > > El mar., 27 nov. 2018 a las 13:34, Konstantin Ivlev (<
> > > tomskside@gmail.com>)
> > > > escribió:
> > > >
> > > > > Hi Pedro,
> > > > >
> > > > > yes, you're absolutely right, by default, conan will be pulling
> > > prebuilt
> > > > > binaries for the libraries from the bintray.
> > > > > however, if prebuilt binaries are not available (e.g. because you
> use
> > > some
> > > > > different compiler for which we don't have prebuilt binaries),
> > > > > or if you want to build binaries yourself for some another reason,
> > > > > then libraries always might be built from source (by passing e.g.
> > > "--build
> > > > > always", "--build missing" or "--build <library>" to the conan
> > install
> > > > > command line).
> > > > >
> > > > > yours sincerely, Konstantin
> > > > >
> > > > > вт, 27 нояб. 2018 г. в 19:27, Pedro Larroy <
> > > pedro.larroy.lists@gmail.com>:
> > > > >
> > > > > > Hi Konstantin
> > > > > >
> > > > > > Thanks for this contribution. With your proposed changes, when
> > > > > > building MXNet we will be pulling binaries for the libraries
> > managed
> > > > > > by conan?
> > > > > >
> > > > > >
> > > > > > Pedro.
> > > > > > On Mon, Nov 26, 2018 at 11:43 AM Konstantin Ivlev <
> > > tomskside@gmail.com>
> > > > > > wrote:
> > > > > > >
> > > > > > > Hello, Ivan,
> > > > > > >
> > > > > > > could you possibly clarify your question (may be explaining
the
> > > > > use-case
> > > > > > > behind it)?
> > > > > > > Gradle appears to be build system, AFAIK more popular in
Java
> > > world.
> > > > > > > meanwhile, Apache Incubator MXNet project uses CMake as
its
> build
> > > > > system.
> > > > > > > please correct me, I am wrong.
> > > > > > > in general, conan, as a package manager, is pretty
> > > > > build-system-agnostic,
> > > > > > > and it may work with arbitrary build systems (to count
a few,
> > > CMake,
> > > > > > > premake, qmake, full list:
> > > > > > > https://docs.conan.io/en/latest/reference/generators.html).
I
> > > don't
> > > > > > think
> > > > > > > Gradle is exception here.
> > > > > > > also, for instance, Android Studio also uses Gradle for
Android
> > C++
> > > > > > > projects, and conan works flawlessly in this particular
case (
> > > > > > >
> > > > >
> > >
> https://blog.conan.io/2018/02/13/Android-Studio-project-Conan-Boost.html
> > > > > > ).
> > > > > > >
> > > > > > > yours sincerely, Konstantin
> > > > > > >
> > > > > > > пн, 26 нояб. 2018 г. в 16:43, Ivan Serdyuk <
> > > > > local.tourist.kiev@gmail.com
> > > > > > >:
> > > > > > >
> > > > > > > > Kostantin, and what (overall) option with using Gradle?
Does
> > this
> > > > > your
> > > > > > > > suggested package manager has been supported by Gradle?
> > > > > > > >
> > > > > > > > Ivan
> > > > > > > >
> > > > > > > > On Mon, Nov 26, 2018 at 9:43 AM Konstantin Ivlev <
> > > > > tomskside@gmail.com>
> > > > > > > > wrote:
> > > > > > > >
> > > > > > > > > hello,
> > > > > > > > >
> > > > > > > > > this email is related to the following PR and
JIRA ticket:
> > > > > > > > > - [MXNET-1229] use OpenBLAS, lapack & OpenCV
from conan
> > > > > > > > > <https://github.com/apache/incubator-mxnet/pull/13400>
> > > > > > > > > - use conan to manage project dependencies
> > > > > > > > > <https://issues.apache.org/jira/browse/MXNET-1229>
> > > > > > > > >
> > > > > > > > > conan <https://conan.io> is an open-source
package manager
> > > for C++
> > > > > > > > > projects. it allows to manage project dependencies
in
> > > transparent
> > > > > and
> > > > > > > > > declarative manner.
> > > > > > > > >
> > > > > > > > > currently, apache incubator-mxnet project uses
the
> following
> > > > > > different
> > > > > > > > > ways to manage its dependencies:
> > > > > > > > >
> > > > > > > > > - download GitHub archives during the build
> > > > > > > > >     - OpenBLAS <https://github.com/xianyi/OpenBLAS>
> > > > > > > > >     - OpenCV <https://github.com/opencv/opencv>
> > > > > > > > > - conda <https://conda.io/> (alternative
way to GitHub
> > > archives)
> > > > > > > > > - download from CMake
> > > > > > > > >     - Intel Math Kernel Library <
> > > > > > https://software.intel.com/en-us/mkl>
> > > > > > > > > (MKL)
> > > > > > > > > - Git submodules
> > > > > > > > >     - cub <https://github.com/dmlc/cub>
> > > > > > > > >     - dlpack <https://github.com/dmlc/dlpack>
> > > > > > > > >     - dmlc-core <https://github.com/dmlc/dmlc-core>
> > > > > > > > >     - googletest <https://github.com/abseil/googletest>
> > > > > > > > >     - mkldnn <https://github.com/intel/mkl-dnn>
> > > > > > > > >     - mshadow <https://github.com/dmlc/mshadow>
> > > > > > > > >     - onnx-tensorrt <https://github.com/onnx/onnx-tensorrt
> >
> > > > > > > > >     - openmp <https://github.com/llvm-mirror/openmp>
> > > > > > > > >     - ps-lite <https://github.com/dmlc/ps-lite>
> > > > > > > > >     - tvm <https://github.com/dmlc/tvm>
> > > > > > > > >
> > > > > > > > > this appears to be very heterogeneous and hard
to
> > > manage/maintain,
> > > > > as
> > > > > > > > > multiple various commands are in use to achieve
> dependencies
> > > > > > > > installation,
> > > > > > > > > as well as multiple places are to look for dependency
> > versions
> > > and
> > > > > > their
> > > > > > > > > updates.
> > > > > > > > >
> > > > > > > > > with conan, it may became much more straightforward,
as
> > > > > dependencies
> > > > > > will
> > > > > > > > > be declared in single place (conanfile) and installed
via
> > > single
> > > > > > command
> > > > > > > > > (conan install).
> > > > > > > > >
> > > > > > > > > as project is very complex, and has lots of dependencies,
> for
> > > the
> > > > > > first
> > > > > > > > > prototype I've used only very few of dependencies
from
> conan:
> > > > > OpenCV
> > > > > > > > > <https://bintray.com/conan-community/conan/opencv%3Aconan
> >,
> > > > > OpenBLAS
> > > > > > > > > <
> https://bintray.com/conan-community/conan/openblas%3Aconan>
> > > and
> > > > > > lapack
> > > > > > > > > <https://bintray.com/conan-community/conan/lapack%3Aconan
> >.
> > > > > > > > > others may be easily added then one by one, but
they first
> > has
> > > to
> > > > > be
> > > > > > > > > packaged (not all of them are packaged yet, e.g.
GoogleTest
> > > > > > > > > <
> > > https://bintray.com/bincrafters/public-conan/gtest%3Abincrafters>
> > > > > > is
> > > > > > > > > available, while MKL is not).
> > > > > > > > >
> > > > > > > > > I attach patch which adds an initial conan support
as proof
> > of
> > > > > > concept.
> > > > > > > > > also, I attach two simple build scripts, which
I've used to
> > > test
> > > > > (for
> > > > > > > > > Windows and Linux / Mac OS X). Google Mail blocks
.sh and
> > .cmd
> > > > > > > > extensions,
> > > > > > > > > so you'll need to rename files.
> > > > > > > > > lemme know if you have any further questions.
> > > > > > > > >
> > > > > > > > > yours sincerely, Konstantin
> > > > > > > > >
> > > > > > > >
> > > > > >
> > > > >
> > >
> >
>

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