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Work in progress.
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Run-time comparison
These are results of a very informal experiment (wall-clock time). Native OS and compilers identical to container versions (we think; can verify these later). Three runs each.
- gripper prob01, blind search:
- native build: 0.098 seconds, 0.101 seconds, 0.102 seconds
- Singularity: 0.320 seconds, 0.350 seconds, 0.364 seconds
- Docker: 1.124 seconds. 1.135 seconds, 1.203 seconds
- Vagrant: 1.726 seconds, 1.736 seconds, 1.792 seconds
- gripper prob07, blind search:
- native build: 19.985 seconds, 20.082 seconds, 20.134 seconds
- Singularity: 20.386 seconds, 20.488 seconds, 20.501 seconds
- Docker: 26.841 seconds, 27.030 seconds, 26.623 seconds
- Vagrant: 22.576 seconds, 22.616 seconds, 22.624 seconds
Vagrant results using "vagrant ssh -c". Most of the penalty over native build seems to be establishing the ssh connection.
Other notes
points in favour of Singularity: once Singularity is installed: trivial setup, no root privileges required, leaves no traces in the filesystem
mention different isolation models for Singularity and Docker
Docker: emphasis on deployment and composition of services
Singularity: emphasis on running scientific experiments