| 1 | = BOINC and Docker = |
| 2 | |
| 3 | [http://www.docker.com Docker] is a system that lets you develop apps |
| 4 | in the environment of your choice (OS, system software, libraries etc.) |
| 5 | and then package up the environment and run it on hosts with different native environments. |
| 6 | |
| 7 | It's sort of like traditional virtual machines (VMware, !VirtualBox) but differs in several ways: |
| 8 | |
| 9 | * Efficiency: Docker images are generally much smaller, |
| 10 | they can be instantiated much faster, |
| 11 | and they have less runtime overhead. |
| 12 | * There are better tools for creating Docker images. |
| 13 | * There's a free [https://hub.docker.com Docker hub] where you can host and distribute images. |
| 14 | * Docker images can run only on modern (3.10+ kernel) 64-bit Linux hosts |
| 15 | |
| 16 | Efforts are underway to use Docker to simplify BOINC - in particular to simplify |
| 17 | the tasks of creating a BOINC project, |
| 18 | and of deploying applications in BOINC. |
| 19 | |
| 20 | Eventually we expect this to be the standard way for scientists to use BOINC. |
| 21 | In the meantime, this page serves to link to information on development efforts. |
| 22 | |
| 23 | == Docker-based BOINC server == |
| 24 | |
| 25 | Marius Millea has packaged the BOINC server as a Docker application. |
| 26 | This is described here: |
| 27 | https://github.com/marius311/boinc-server-docker/blob/master/docs/cookbook.md |
| 28 | |
| 29 | In this implementation, the server consists of three Docker "containers": |
| 30 | * The MySQL database |
| 31 | * The Apache web server |
| 32 | * The BOINC back-end programs and command-line tools. |
| 33 | The project's state is stored in Docker "volumes" that are shared between these containers. |
| 34 | |
| 35 | == Docker-based BOINC applications == |
| 36 | |
| 37 | You can also use Docker to deploy your Linux-based applications on BOINC. |
| 38 | The preferred way to do this is: |
| 39 | |
| 40 | * Your various applications are run under a single BOINC application, |
| 41 | which we'll call the "universal Docker application". |
| 42 | * Your Docker image and job input files are all part of the BOINC workunit. |
| 43 | The image files are "sticky" so they're downloaded only once. |
| 44 | |
| 45 | Docker only runs on recent Linux, so on Win and Mac the universal Docker application |
| 46 | uses a !VirtualBox virtual machine to host Docker containers. |
| 47 | |
| 48 | Support for this is included in the BOINC server package described above. |
| 49 | |
| 50 | With this system, running a job under BOINC is as simple as running a Docker container |
| 51 | (i.e. it's a single command). |
| 52 | |
| 53 | The caveats are that Docker jobs will on only run on hosts that: |
| 54 | |
| 55 | * are 64-bit Intel-compatible |
| 56 | * have VM extensions in hardware (almost all do) |
| 57 | * have these extensions enabled in BIOS |
| 58 | * have !VirtualBox installed |
| 59 | |
| 60 | Also, as of now you can't run GPU applications in this framework. |