The RAI client is an executable downloaded by the students and runs on the students’ machines. The executable requires no library dependencies and works on all the main operating systems and CPU architectures. Both features reduce the likelihood that students will have technical difficulties running the client. Students use the RAI client to interact with a distributed elastic system to submit jobs.
The code is continuously built and published. The client can be downloaded from the following URLs (depending on your OS and Architecture):
|Operating System||Architecture||Stable Version Link|
Building From Source
This is not recommended unless you are interested in developing and/or deploying
rai on your personal cluster. To build from source simple run
go get -u github.com/rai-project/rai
You will need an extra secret key if you build from source.
- Create a
raidirectory. You can copy the existing
rai_config.ymlas a starting point.
- Run rai with
go run -tags develop main.go -d -v -s <app-secret> -p <project-folder>
Alternatively, you can place the app secret in
~/.rai_secret and just do
go run -tags develop main.go -d -v -p <project-folder>
-tags develop casuses rai to read the local configuration instead of using an embedded one.
To run the client, use
rai -p <project folder>
From a user’s point a view when the client runs, the local directory specified by
-p gets uploaded to the server and extracted into the
/src directory on the server. The server then executes the build commands from the
rai_build.yml specification within the
/build directory. Once the commands have been run, or there is an error, a zipped version of that
/build directory is available from the server for download.
The server limits the task time to be an hour with a maximum of 8GB of memory being used within a session. The output
/build directory is only available to be downloaded from the server for a short amount of time. Networking is also disabled on the execution server. Contact the teaching assistants if this is an issue.
-c, --color Toggle color output. -d, --debug Toggle debug mode. -p, --path string Path to the directory you wish to submit. Defaults to the current working directory. (default "current working directory") -v, --verbose Toggle verbose mode.
On Windows, it might be useful to disable the colored output. You can do that by using the
Setting your Profile
Each student will be contacted by a TA and given a secret key to use this service. Do not share your key with other users. The secret key is used to authenticate you with the server.
RAI_ACCESS_KEY should be specified in your
~/.rai_profile (Linux/OSX) or
%HOME%/.rai_profile (Windows – for me this is
C:\Users\abduld\.rai_profile) in the following way.
profile: firstname: Abdul lastname: Dakkak username: abduld email: firstname.lastname@example.org access_key: XXXXXXXXXXXXXXXXXXX secret_key: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Project Build Specification
rai_build.yml must exist in your project directory. In some cases, you may not be able to execute certain builtin bash commands, in this scenario the current workaround is to create a bash file and insert the commands you need to run. You can then execute the bash script within
rai: version: 0.2 # this is required image: nimbix/ubuntu-cuda-ppc64le:latest # nimbix/ubuntu-cuda-ppc64le:latest is a docker image # You can specify any image found on dockerhub resources: cpu: architecture: ppc64le gpu: architecture: pascal count: 1 # tell the system that you're using a gpu network: false commands: build: - echo "Building project" # Use CMake to generate the build files. Remember that your directory gets uploaded to /src - cmake /src # Run the make file to compile the project. - make # here we break the long command into multiple lines. The Yaml # format supports this using a block-strip command. See # http://stackoverflow.com/a/21699210/3543720 for info - >- ./mybinary -i input1,input2 -o output
Syntax errors will be reported, and the job will not be executed. You can check if your file is in a valid yaml format by using tools such as Yaml Validator.
Building Docker Images
Most of the images on Docker Hub are compiled for X86 architectures. If you are using PPC64le, Power 8 architecture, e.g. Minsky, then you will have to build your Docker image from scratch. RAI has support for building Docker images on the host system.
Tell the RAI client that you want to build a Dockerfile. This can be done by modifying the
.rai-build.ymlfile to include the following:
commands: build_image: image_name: your_user_name/your_image_name:your_image_version # example dakkak/cudnn:6.0 dockerfile: "./Dockerfile" # the location of the Dockerfile on your local file system build: ...
raias if you are submitting the project. RAI will build and use the image you’ve specified.
rai will not rebuild a docker image if it has the same name as a preexisting image on the system.
You can disable that by changing the
nocache option to
true in the
rai: version: 0.2 resources: cpu: architecture: ppc64le network: false commands: build_image: image_name: rai/cumf:8.0 dockerfile: "./Dockerfile" no_cache: true
Publishing Docker Images
Docker images built using
rai can be published on DockerHub.
You will have to explicitly tell
rai to push the image in the
rai: version: 0.2 commands: build_image: image_name: c3sr/celery:4.0.2 dockerfile: "./Dockerfile" push: push: true
Specifying DockerHub Credentials
There are two ways of specifying the DockerHub credentials. Through the
~/.rai_profile file (prefered) by adding a
dockerhub section e.g.
profile: firstname: Abdul lastname: Dakkak ... dockerhub: username: dakkak password: ==AES32==PASS
or by placing it in the
rai: version: 0.2 commands: build_image: image_name: c3sr/celery:4.0.2 dockerfile: "./Dockerfile" push: push: true credentials: username: dakkak password: ==AES32==PASS
The password can be encrypted using the
rai encrypt command.
Profiling can be performed using
nvprof. Place the following build commands in your
- >- nvprof --cpu-profiling on --export-profile timeline.nvprof -- ./mybinary -i input1,input2 -o output - >- nvprof --cpu-profiling on --export-profile analysis.nvprof --analysis-metrics -- ./mybinary -i input1,input2 -o output
You could change the input and test datasets. This will output two files
analysis.nvprof which can be viewed using the
nvvp tool (by performing a
file>import). You will have to install the nvvp viewer on your machine to view these files.
nvvp will only show performance metrics for GPU invocations, so it may not show any analysis when you only have serial code.
Please use the Github issue manager to report any issues or suggestions.
Include the outputs of
as well as the output of
In your bug report. You can also invoke the
rai command with verbose and debug outputs using
rai --verbose --debug
- PUMPS 2018 Summer School
- ECE408 Fall2017 Project
- ECE508 Spring2017 MP
- ECE508 Spring2017 Project
- ECE408 Fall2016 Project
- Dakkak, Abdul et al. “RAI: A Scalable Project Submission System for Parallel Programming Courses.” (2017).
NCSA/UIUC © Abdul Dakkak