The --share option was available in Slurm version up to 14.03. In Slurm 14.11 and later, it has been replaced by --oversubscribe. The --share option was used to allow overcommitment of node resources by multiple jobs.
In the recent versions, you can use --oversubscribe to enable the overcommitment instead. If you're running a version older than 14.11 and --share isn't working, it's possible that the system administrator has disabled it.
Please, check your Slurm version and consult the documentation or the system administrator if you encounter any issues.
另外在slurm.conf 中，这个参数也要开启，要不然也不可以单节点多任务跑
SelectTypeParameters=CR_Core
# SelectTypeParameters=CR_Core and . It allows multiple jobs to share the same node as long as there are enough cores available.
