default_interactive_partition

This attribute specifies the default partition for running MPI jobs. Its value is used by the command mprun, which is described in the Sun HPC Cluster Runtime Environment 1.0 User's Guide.

For example, to make a partition named part0 the default partition, enter the following in the Cluster context:

[node0]:: set default_interactive_partition=part0

When a user executes a program via mprun, the CRE decides where to run the program, based on the following criteria:

1. Check for the command-line -p option. If a partition is specified, execute the program in that partition. If the specified partition is invalid, the command will fail.

2. Check to see if the MPRUN_FLAGS environment variable specifies a default partition. If so, execute the program in that partition. If the specified partition is invalid, the command will fail.

3. Check to see if the SUNHPC_PART environment variable has a value set. If it specifies a default partition, execute the program in that partition. If the specified partition is invalid, then check to see if the user is logged into any partition. If so, execute the program in that partition.

4. Check to see if the user is logged into a partition. Execute the program in that partition.

5. If none of these checks yield a partition name, check for the existence of the default_interactive_partition attribute. If it specifies a partition, execute the program in that partition.

The SUNHPC_PART environment variable is described in "CRE Environment Variables". The MPRUN_FLAGS environment variable is described in the Sun MPI 4.0 User's Guide: With CRE.