scheduler

Slurm job scheduler

At Abacus we use Slurm for scheduling jobs.

In general, Abacus is intended to be used for batch jobs, i.e., jobs which run without any user intervention. It is also possible to run interactive jobs---this is described here.

A typical user usage scenario is the following

Network

The compute nodes are connected using high-speed InfiniBand FDR (56 Gbit/s) equipment from Mellanox. To reduce cost while maintaining good inter-node speed, the InfiniBand switches are connected using a 3D torus (a 3x3x4 3D torus) as shown in the figure below.

 Each box in the figure, e.g., s51 (1,2,1), corresponds to an InfiniBand switch.

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