[Tornado-users] tornado: policy

[Per Lundqvist]

The policy for the different types of nodes is now displayed when logging 
in to to tornado and the analysis node. The following is displayed:

----------------------------------------------------------------------
Policy for the login node:
 * Things suitable for the login node:
    . Editing, Compiling, File transfers.
    . Tiny test runs (< 60 CPU-seconds  _and_ < 2 CPU:s _and_ < 1 GiB
      memory, _else_ use a compute node).

Policy for the analysis node:
 * Do _not_ use the analysis node if your application is capable of
   running elsewhere.
 * Things suitable for the analysis node:
    . Anything that requires > 2GiB of memory.

Policy for the compute nodes:
 * n1-n129 must be allocated throught the batch queueing system.
 * Things suitable for compute nodes:
    . Jobs (>= 60 CPU:seconds _or_ >= 2 CPU:s _or_ >= 1 GiB memory).
    . Parallell applications.
    . Compiling (using interactive jobs).
    . Test runs (interactive/regular jobs utilizing the development
      reservation).

Tip:
 . Use the command top to get realtime information about running
   processes on the node (default sorted by cpu-usage, press shift-m
   to sort by memory usage).
 . Use nice to run applications with a lower priority (e.g. nice -n 19
   myapplication executes myapplication with the lowest priority). Use
   renice to alter priority of already running processes.
----------------------------------------------------------------------

/Per

-- 
Per Lundqvist

National Supercomputer Centre
Linköping University, Sweden

http://www.nsc.liu.se