SLURM Reference Manual for HP XC System Software

On BlueGene/L ONLY:
--geometry=N[xM[xO]]
species your job's size in "nodes" in each direction within BG/L's eld of nodes
(e.g., geometry=1x2x4 for 8 nodes). SLURM regards each BG/L 512-node
dual-processor "base partition" as a single 1024-processor node. Use SLURM's SMAP
utility (page 63) on BG/L to visualize job layout and the geometric intermixing of
several jobs.
If you omit --geometry on BG/L, then SRUN uses 1x1x1 as the default (or if you also
use -N num then SRUN uses numx1x1 as the default). If you omit O then the default
geometry is NxMx1; if you omit both M and O then the default is Nx1x1.
--conn-type=mesh|torus
species the type of interconnect that you want used between BG/L "base partitions"
("nodes" to SLURM), where the choices are mesh (the default) or torus.
--node-use=coprocessor|virtual
species how to use the second processor on each BG/L compute node, where the
choices are coprocessor (the default, so that the processor number is always t0) or
virtual (allows processor numbers t0 and t1, but seems to be incompatible with the
TotalView debugger).
-R (uppercase, --no-rotate)
disables rotation of job geometry to t available space (the default is to rotate in three
dimensions).
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