Is there an MCA way to specify server URI in v5.0?

[cruiseliu]

Background information

What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash, etc.)

v5.0.1

Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)

Arch Linux system package

Please describe the system on which you are running

• Operating system/version: Arch Linux
• Computer hardware: Intel Core i7
• Network type: Ethernet

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Details of the problem

In v4.1.x the server URI could be set with mpirun --mca pmix_server_uri.
The environment variable OMPI_MCA_pmix_server_uri has a similar effect when the process is not launched with mpirun.

In v5.x the server URI is set with mpirun --dvm or prun --dvm-uri.
Seems there is no environment variable equivalent for these parameters?

[wenduwan]

@rhc54 Could you provide some insights?