Command Parameters of Hyper MPI 25.1.0.SPC001 and Later Versions

**Table 1** Command parameters of Hyper MPI 25.1.0.SPC001 and later versions
Parameter	Value	Description
-x UCX_RNDV_THRESH=	Type: <number>[b\|kb\|mb\|gb], inf, or auto Range: any positive integer Default value: auto	Specifies the threshold for switching from the eager protocol to the rendezvous protocol.
--mca coll_tuned_use_dynamic_rules true --mca coll_tuned_dynamic_rules_filename /path/to/file	Type: string Range: path to the algorithm configuration file NOTE: The reference configuration file is stored in: BiSheng Compiler version: /HPCKit installation and deployment directory /HPCKit/latest/hmpi/bisheng/release/hmpi/etc GCC compiler version: /HPCKit installation and deployment directory/HPCKit/latest/hmpi/gcc/release/hmpi/etc Default value: none	Specifies the algorithm configuration file for the mca coll tuned module. The optimal collective communication algorithm is selected based on the number of processes and packet size.

Parent topic: Command Parameters