The conda package specification includes the package name (i.e. singa), version and build string (could be very long). To install a certain SINGA package we run
conda install -c nusdbsystem singa=<version>=<build string>
It is inconvenient to type all 3 parts when running the installation commands. The meta.yml file in this folder is to create a conda package
singa-dist as an alias of one specific SINGA package. It does nothing except creating a dummy conda package that depends on one real gpu version SINGA package. For example, the following line in meta.yml indicates that singa-gpu depends on SINGA with version 1.1.1, python version=3.6, cuda version=9, cudnn version = 7.1.2, nccl version = 184.108.40.206, and mpich version = 3.3.2
- singa 1.1.1 py36_cuda9.0_cudnn7.1.2_nccl220.127.116.11_mpich3.3.2
Therefore, when we run
conda install -c nusdbsystem singa-dist
The dependent SINGA package will be installed. By default, singa-dist depends on the latest SINGA (py3.6) on the latest cuda (and cudnn), as well as the distributed computing libraries nccl and mpich. When we have a new SINGA version available, we need to update the meta.yml file to change the dependency.
To build this package and upload it
conda config --add channels nusdbsystem conda-build . --python 3.6 anaconda -t $ANACONDA_UPLOAD_TOKEN upload -u nusdbsystem -l main <path to the singa-dist package>
where $ANACONDA_UPLOAD_TOKEN is the upload token associated with nusdbsystem account on anaconda cloud.