SLURM uses bitmaps for scheduling operations and its limit is 64k nodes (for IBM BlueGene systems, each midplane is counted as a node for scheduling purposes). I trust that will be sufficient for your needs.

Quoting Andreas Davour <dav...@pdc.kth.se>:


It just struck me that I am not sure I have seen any precise fact
about how many nodes are considered in the scheduling stage.

Some other scheduling algorithms seem to limit themselves to a fixed
number, say 16, nodes in each pass. I have not seen any mention of
that in the slurm man pages.

Am I looking in the wrong place or is the algorithms quick enough not
to have a limit?

/andreas
--
Systems Engineer
PDC Center for High Performance Computing
CSC School of Computer Science and Communication
KTH Royal Institute of Technology
SE-100 44 Stockholm, Sweden
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