poznamka o checkpointingu u REQUEUE partitions

README.md

@@ -48,6 +48,7 @@ Our clusters use only two kind of preemption:
 - **SUSPEND** - the preempted job is suspended and releases CPUs. Unfortunately, it does not release memory or GPUs.
 - **REQUEUE** - the preempted job is killed and requeued to the scheduling queue, waiting for available resources.
 All resources including GPUs are released.
+Jobs submitted to the partition should use some form of checkpointing, otherwise all work can be lost, when the job is killed during preemption.
 
 ### Important commands