Power properties incorrectly defined on platforms about batsim HOT 4 CLOSED

Hello Lucas,

Thanks for contributing to Batsim! :)

Nix issue

Indeed, there was a problem in the definition of some Nix packages in datamovepkgs. ocaml_batteries was used instead of batteries, causing the failure of any installation via nix-env -i (unless -A is used, as in this case only the required descriptions are evaluated). This should be fixed in e32b955.

Energy platform definition issue

The problem you encountered probably comes from a version mismatch between SimGrid and the platform file. The platform files in Batsim's codebase (in platforms/) are usually working with their corresponding SimGrid version:

• Upstream Batsim (e.g., 1a5f224), using upstream SimGrid (tested with 5256bf572). This is the recommended version unless you need to kill jobs that are being started. Some of the platform files are tested by Batsim's CI on each commit (there) — notably energy_platform_homogeneous_no_net_128.xml and cluster_energy128.xml. This will be the next Batsim release as soon as all corner-case kill tests pass again.
• Batsim 2.0.0, using a specific SimGrid fork. This is the recommended version if you heavily rely on job kills. This SimGrid version is quite old (4818 commits behind upstream as I write these lines) and the platform description format has changed since then.

As it seems you are interested in studying energy-related phenomena with Batsim, please note that your results may be impacted by an ongoing SimGrid issue about the energy consumption of (1-core) hosts executing parallel tasks.

Best regards,
Millian

from batsim.

Yes, I'm actually developing a scheduling algorithm to minimize energy consumption and using Batsim to evaluate it.

Thanks for point me that out.

Best Regards.

from batsim.

Should we close this issue @lccasagrande?

from batsim.

Yes for sure, thanks for the help.

from batsim.