NAME

       run-escript - a launcher for programs and scripts using the escript libraries.

SYNOPSIS

       run-escript [-n nn ] [-p np ] [-t nt ] [-f hostfile ] [-x ] [-V ] [-e ] [-h ] [-v ] [-o ] [-c ] [-i ] [-b
       ] [ file ] [ ARGS ]

OPTIONS

       file is the name of a script, ARGS are arguments for  the  script.   escript  will  import  your  current
       environment  variables.  If  no  file  is  given,  then  you  will  be  given a python prompt (see -i for
       restrictions).  The options are used as follows:

       -n nn Specify the number of compute nodes nn to be  used.   This  option  overwrites  the  value  of  the
              ESCRIPT_NUM_NODES  environment  variable.  If  nn > 1 but escript was not compiled for MPI, then a
              warning is printed but execution is continued with nn = 1. The default value is 1.

       -p np Specify the number of MPI processes per node.  The total number of processes to be used is nn times
              ns.  This option overwrites the value of the ESCRIPT_NUM_PROCS environment variable. If np > 1 but
              escript is not compiled for MPI a warning is printed but execution is continued with np =  1.  The
              default value is 1.

       -t   nt   The   number  of  threads  used  per  processes.  This  option  overwrites  the  value  of  the
              ESCRIPT_NUM_THREADS environment variable. If nt
               > 1 but escript is not compiled for OpenMP a warning is printed but execution is  continued  with
              nt = 1. The default value is 1.

       -f  hostfile  Specify  the  name of a file with a list of host names. Some systems require to specify the
              addresses or names of the compute nodes where MPI process should be spawned. The list of addresses
              or  names  of  the  compute  nodes is listed in the file with the name hostfile. In order to avoid
              oversubsription the number of different hosts defined in hostfile must be equal to the  number  of
              requested  compute  nodes nn.  The option overwrites the value of the ESCRIPT HOSTFILE environment
              variable. By default value no host file is used.

       -c Prints the information about the settings used to compile escript and stops execution.

       -V Prints the version of escript and stops execution.

       -h Prints a help message and stops execution.

       -i Executes file and switches to interactive mode after the execution is finished  or  an  exception  has
              occurred. This option is useful for debugging a script. The option cannot be used if more than one
              process ( nn * np > 1) is used or if -b is used.

       -b Do not invoke python. This is used to run non-python programs.

       -e Outputs export statements for the additional environment variables and commands  used  during  escript
              execution.  This  option  is  useful  if  users  wish to execute scripts without using the escript
              command.

       -o Switches on the redirection of output of processors with MPI rank  greater  than  zero  to  the  files
              "stdout_r.out"  and "stderr_r.out" where r is the rank of the processor. The option overwrites the
              value of the ESCRIPT_CREATESTDFILES environment variable.

       -v Prints some diagonstic information.

                                                                                                  run-escript(1)