Xeon Phi
^^^^^^^^

This machine has been designed by `Atos/Bull`_ and is hosted at CINES_ in Montpellier, France. It is made of 76 Bull Sequana X1210 blades, each including 3  Xeon Phi KNL nodes. It totals a theoretical peak performance of 465 Tflop/s with an estimated consumption of 42kW.

.. note::

    In order to access the machine BCOs should fill the `GENCI login opening form`_.
    Use the following information to fill project related fields:

     - project outside DARI
     - name of the personn in charge of the project: Victor Cameo Ponz
     - phone number: +33 (0)4 67 14 14 03
     - project code: praceknl
     - scientific machine demanded: PCP KNL cluster

    Then send it back to `Victor Cameo Ponz`_.

Compute technology
""""""""""""""""""
Hardware features the following nodes:
 * 168 nodes with
   * 1x Intel Xeon Phi 7250 processor (KNL), 68 cores cadenced to 1.4 GHz with SMT 4.
   * 96GB memory, 16GBx6 DDR4 DIMMs
 * intranode comunications integrated using InfiniBand EDR
 * 100% Hot water cooled nodes
 * Half of the configuration feature liquid cooled Power Supply Unit (PSU) make this part of the machine 100% liquid cooled.
 * MooseFS I/O

Each compute node has a theoritical peak performance of 2.765 TFlop/s (double precision) and a power consumption of less than 250W.

Energy sampling technology
""""""""""""""""""""""""""

Current and voltage sensors based on Hall-effect sensor with a linear sensitivity in range 0-200 A. The sampling occurs at the node level at up to the frequency of 50 kHz and is provided through a HDEEM FPGA on each node.




.. _GENCI login opening form: https://www-dcc.extra.cea.fr/CCFR/
.. _cines-login-form-odt: https://www.cines.fr/wp-content/uploads/2014/01/opening_renewal_login_2017.odt
.. _cines-login-form-rtf: https://www.cines.fr/wp-content/uploads/2014/01/opening_renewal_login_2017.rtf
.. _Atos/Bull: https://bull.com/
.. _CINES: https://www.cines.fr/
.. _Victor Cameo Ponz: cameo+4ip-extension@cines.fr