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--- wiki:managing_resources_cpu_gpu [2020/03/03 13:31] – [Managing processing unit topologies] neyron
+++ wiki:managing_resources_cpu_gpu [2020/03/03 13:43] – [First scenario, simple] neyron
@@ Line 68: / Line 68: @@
 Also, if some nodes do not have any GPU, you could set the value of the property for the corresponding resources to ''gpudevice=-1'', and let the users add to the ''oarsub'' command a ''-p "gpudevice >=0"'' in order to get resources with GPUs.
+But be '''warned''', that the following commands will mostly not provide what a user would expect:
+<code bash>
+$ oarsub -l gpudevice=1
+</code>
+will gives all resources matching one identifier of gpudevices, which means all nodes limited to their first gpus (''gpudevice=0''), or second gpus (''gpudevice=1''), or all nodes which have no gpus (''gpudevice=-1'').
+<code bash>
+$ oarsub -l gpudevice=N
+</code>
+with N > 1 makes even less sense. See the setup proposed in the section below if you want to let your users request N gpus like that (using ''oarsub -l gpu=N'').
 ===== Second scenario, more complex =====