# Command: nest_indirect

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Name:

    nest_indirect - Returns a nest call as a string able to spawn distributed simulations

      Synopsis:  (sli-filename) nest_indirect -> (string with shell command)

Examples:

      (hello.sli) nest_indirect -> (/home/dummy/nest/bin/sli hello.sli)

Description:

      If a task requires multiple distributed simulations with different
      numbers of processors NEST needs to be compiled with support for distributed
      computing and be aware of the corresponding method to start itself. However,
      some libraries for distributed computing do not support the nested call of
      further processes. Therefore, nest_indirect provides a serial environment
      for the preparation of the distributed simulations.
      The algorithm is as follows:
      1. if nest is not compiled with MPI, quit with fatal error
      2. if sli command /mpirun is not defined, quit with fatal error
      3. return "sli"

Diagnostics:

      This function quits nest with a fatal error if there is no support for
      distributed computing or NEST does not know how to start a distributed version
      of itself.

Author:

    Diesmann

FirstVersion:

    090711

SeeAlso:

- nest_serial

Source:

    /opt/conda/conda-bld/nest_1510212701067/work/nest-2.14.0/lib/sli/processes.sli

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