New cluster administrators

Hi all,

there are two new cluster administrators – finally I am relieved of this
duty (after 3 years, yay!). The new main administrator is Jeremie, with
Manuele serving as standby in case of Jeremie’s absence.

As there are multiple administrators now, please direct all future
communication to cluster_admins@iridia.ulb.ac.be

Thank you
Arne

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Proper usage of /tmp

  • Please include as a last line on your scripts something like “rm -rf
    $TMPDIR” in order to make sure that there’s no data left on the node
    after your job terminated. See link below for further info: How to submit a job
  • If your jobs fail, you can use the script ‘clean_temp_dirs.sh’ on the
    submit host to clean out any remaining data on the nodes. Please use it,
    but only when you have a lot of jobs that failed.
  • Please don’t write gigabytes of data. There’s 130GB free space on the
    c2-x, if you managed to fill this up you did something wrong.
  • Please be considerate. If you fuck up the cluster, you block all
    other users and, in terms of near deadlines like now, tempers rise
    easily.

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GCC 4.4 and ARGoS on the IRIDIA cluster

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EDIT: With the new installation of the cluster, gcc44 is the default compiler, so you don’t need this anymore. Actually it might be possible that leaving these settings will prevent you from compiling. Remove them in case you have cmake problems (such as: CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly. Missing variable is: CMAKE_C_COMPILER)
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OUTDATED! READ ABOVE!!!
On the IRIDIA cluster, GCC 4.4 is available under the commands gcc44/g++44.

In order to use this with CMake and ARGoS2, you can either set the appropriate environment variables or simply add a


set(CMAKE_C_COMPILER "gcc44")
set(CMAKE_CXX_COMPILER "g++44")

before the version check in the main CMakeList of *each* of your packages.

On a side note, I fixed the missing packages for ARGoS 1, so that old experiments can again be compiled.
OUTDATED! READ ABOVE!!!

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Cluster issues

The cluster is still experiencing technical difficulties. Most probably this is connected to a faulty/overloaded switch, but I am not sure at the moment.

Please expect interruptions or other problems with the cluster. Thus, the cluster can be considered unstable until further notice. Sorry for the inconvenience.

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New packages

New software packages!

  • bsdiff-4.3-3
  • google-perftools-1.6-1
  • google-perftools-devel-1.6-1
  • gsl-1.14-1
  • gsl-devel-1.14-1
  • mercurial-1.3.1-3
  • openjpeg-devel-1.3-6
  • openjpeg-libs-1.3-6

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SSH host key changed

As the operating system was replaced completely, the SSH host key of majorana changed as well.

If you get an error message from your ssh client upon trying to connect to majorana, follow the instructions to delete the cached key (usually in ~/.ssh/known_hosts).

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