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News
  • CINES received a 150 TFlops machine
  • GENCI has acquired for the French University Supercomputing Center a 12288 core SGI Altix. It is ranked 14th in the World and first in France.
  • Site Web du CINES
  • IDRIS received a 140 Tflops BlueGene/P machine.
  • The CNRS supercomputing centre has acquired a new BlueGene machine with 40480 processors and 20 To of RAM memory.
  • See the press release.
  • Mare Nostrum simulation down to z=1.55
  • We carried out our fourth run of MareNostrum down to z=1.55 while producing 150 Million "stars". More info is given here
  • Horizon 4Pi 4096^3 down to z=0
  • We have carried a full sky 2Gpc/h 4096^3 Dark Matter simulation down to z=0. More details can be found here
  • Horizon 4Pi run 2048^3 completed
  • We have completed a full sky cone run of DM with RAMSES on platine CEA with 2048^3 particles. See a slice here
  • Mare Nostrum @ z=1.9
  • We carried out our third run of MareNostrum down to z=1.9 while producing 120 Million "stars"
  • Mare Nostrum simulation down to z=2.4
  • We carried our second run on the Mare Nostrum supercomputing center down to z=2.4, thanks to 4-fold improvement in overall performance.
  • 1024^3 500 h-1Mpc simulation completed
  • RAMSES run of the HORIZON initial condition was carried down to z=0 using 1024^3 dark matter particles in a (500 Mpc/h)^3 box with up to 16 levels of refinement (corresponding to local effective resolution of 65536).
  • Horizon 1024^3 100 Mpc/h simulation completed.
  • A RAMSES run of the HORIZON initial condition was carried down to z=0 using 1024^3 dark matter particles in a (100 Mpc/h)^3 box with up to 16 levels of refinement (corresponding to local effective resolution of 65536).
  • A 43 Tflops supercomputer at CEA
  • CCRT, the supercomputing centre of CEA, has just received a new BULL supercomputer with 6800 processors and 13.6 Tb of RAM memory. This facility is dedicated to academic and industrial research.
  • Lire le communiqué
  • Fourth Horizon Workshop 2006b
  • The 4th workshop takes place from December, the 11th to December, the 12th at Paris Observatory. Registration form available here.
  • MareNostrum simulation has started at BSC
  • After 1 week of operations, we have reached redshift 4. The simulation will proceed further more during the next quarters. We have started to post-process these initial data.
  • Horizon Grid
  • The Horizon grid is now in operation. It links the 6 quadri opteron of Meudon, Paris, Lyon, Saclay, IAP and Marseille and is open to all members of the collaboration. Voir ce lien
  • http://grille.projet-horizon.fr
  • Third Horizon Workshop 2006a
  • Horizon Workshop 2006a 10, 11 and 12 april 2006 in Lyon. It will be dedicated to progress reports. Registration form
  • Horizon is part of the DEISA "Extreme Computing Initiative"
  • Horizon will launch one extreme application for galaxy formation using the DEISA infrastructure at Mare Nostrum http://www.bsc.es
  • DEISA web site
  • Second Horizon Workshop
  • Horizon Workshop 2005 took place at Paris Observatory the 14th and 15th november. It was dedicated to internal discussions and management issues.
  • November 2005: Horizon méso-machine is fully operational at HPC1
  • October 2005: Horizon was awarded a 500 k€ grant by ANR, the French Science Foundation.
  • Horizon response to «ANR Blanche» Call for Proposals has been succesfull in the «UNIVERS» program.
  • ANR web site
  • July 2005: HP France was selected to host the Horizon "meso-computer"
  • HP company has succesfully answered the "call for proposals" issued by the Hrizon Project for a medium-size dedicated super-computer. The computer will be hosted at HPC1, the HP high performance computing center near Paris.
  • February 2005: INSU and CEA agree to fund the Horizon "meso-machine".
  • Horizon has submitted to INSU a proposal for funding a medium-size computer dedicated to the project. The proposal was accepted as a joint CEA and INSU operation.
  • September 2004: Kick-off meeting in Paris
  • During 3 days (13, 14 and 15 of september), 30 scientists have met at Observatoire de Paris to set up the basic organisation and objectives of the Horizon Project.
  • KO Meeting
  • June 2004: Project report at SF2A in Paris
  • April 2004: Horizon received official support from ASSNA.
  • The french initiative «Action Spécifique pour les Simulations Numériques en Astrophysique» have given to the Horizon project its "label" for outstanding and structuring computational project.
  • April 2004: The french Astroparticule program provides financial support for the Horizon "mini-grid"
  • The Programme Astro-Particule, a joint IN2P3 and INSU initiative, has agreed to finance 6 quad AMD64 servers dedicated to the Horizon Project.
  • January 2004: Review by PNC and PNG
  • Both PNG and PNC scientific comitees are officially supporting the Horizon Project initiative.
  • June 2003: Presentation of the project to SF2A
  • Theoretical Virtual Observatory workshop (IAP April 5-6, 2006)

  • A workshop dedicated to the Theoretical Virtual Observatory will take place at IAP on April 5-6th.

    The goal is to bring together experts of the Virtual Observatory and theoreticians who would like to make results of their simulations (e.g. databases or catalogs) or numerical codes available to the worldwild astronomical community.

  • Program and speakers

Horizon Workshop 2005

14 et 15 novembre 2005 à l’Observatoire de Paris et à l’IAP
by Pichon Christophe (Monday 21 November 2005)

Après un an d’activité, cet atelier va permettre aux scientifiques du Projet Horizon de faire le point sur les moyens informatiques, logiciels et humains que nous avons demandés à nos tutelles et qui sont maintenant à notre disposition. Le Projet Horizon rentre maintenant dans sa phase de production: il s’agit de préparer l’année 2006, qui s’annonce riche et fructueuse et qui fera avancer notre compréhension de la formation des strcutures dans l’univers. Les scientifiques extérieurs au Projet Horizon sont les bienvenus à cet atelier pour donner leurs conseils et apprendre à mieux connaitre notre projet.

Le lien pour l’inscription se situe sur le site interne: inscription

Workshop Horizon le 14 et 15 novembre 2005

Please register below as soon as possible (below program).

Program

Lundi 14 Novembre: Salle du conseil de l’Observatoire

CAFE-ACCUEIL

11h00-11h30
- Horizon: news, management, visibilité et communication: Teyssier, Colombi;

11h30-12h00
- Moyens de calcul dédié (mini-grille, méso-machine): Honoré;

12h00-12h30
- Présentation de DEISA, Mare Nostrum et les centres de calculs: Devriendt, Audit;

Repas

14h00-14h30
- Interface multi echelle: lien entre cosmologie et galaxies: Combes;

14h30-15h30
- Avancement des rubriques et Encadrement; 1ère session

# I. Conditions Initiales
- Conditions initiales cosmologiques: Aubert;
- Conditions initiales cosmologiques contraintes: Pichon;
- Conditions initiales cosmologiques multi echelles Semelin;
- Conditions initiales idealisees: Emsellem, Athanasoula;

# XII. Management des simulations Devriendt

15h30-16h15 Présentations Etudiants
- O. Tiret : "Comparaison entre modèles de matière noire et MOND dans la dynamique des disques de galaxies spirales"
- J. Forero : "GALICS et MOMAF: ses nouvelles extensions."
- T. Sousbie : "Extraction du squelette 3D a partir d’un champ de densité"

CAFE

16h30-17h00
- Avancement des rubriques et Encadrement; 2ème session

# II. Modèles physiques et astrophysiques: Devriendt;

# III. Equations modèles et algorithmes associés: Slyz;

# V. Lecture et format des données Devriendt

# VII. Outils d’analyse statistique Courtois,Colombi

# VIII. Outils de détection des structures Colombi,Pichon

17h00-17h45 Présentations Etudiants
- P.E. Chapellat: "Galaxies vues dans l’espace des composantes principales des spectres GalICS"
- D. Tweed : "Étude du logiciel Adaptahop dans le cadre de la détermination des sous-structures dans les halos de matière non collisionnelle."
- M. Maciejewski : "Finding and analyzing dark matter halos structures in six dimensional phase space"

Buffet

Mardi 15 Novembre: Salle du conseil de l’IAP

09h30-10h00
- Avancement des rubriques et Encadrement; 3ème session

# IV. Modèles semi-analytiques Guiderdoni,Blaizot

# IX. Génération d’observations virtuelles; Production des catalogues et cartes: (SZ,lensing etc.) Blaizot;

10h00-11h00
- Exploitation du site Web Horizon: Legrand;

CAFE

11h30-12h00
- Avancement des rubriques et Encadrement; 4ème session

# X. Calcul parallèle et hardware Colombi

# XI. Mise en ligne et bases de données Wozniak

# VI. Outils de visualisation Colombi

12h00-12h45 Présentations Etudiants
- N. Champavert: "Simulations numériques chemodynamiques de la formation et de l’évolution des galaxies"
- G. Lavaux: ""Localisation de la matiere noire: outils et techniques"
- Y. Dubois: "Influence des vents de supernovae dans la formation des galaxies"

REPAS

14h00-15h00
- Questions scientifiques et prospectives: Teyssier;

15h00-15h45 Présentations Etudiants
- F. Bournaud: "Evolution des galaxies : influence de l’environnement (interactions filaments) et morphologie interne"
- S. Caucci:"La topologie du milieu intergalactique"
- S. Peirani: "étude de l’évolution de paramètres physiques des halos de matière noire avec les librairies graphiques PGplot et OpenGL"

CAFE

16h00-17h00
- Horizon: bilan & projets: Teyssier;

Fin du colloque

Liste des Participants

- Pichon christophe IAP pichon atiap.fr

- Courtois helene CRAL / Observatoire de Lyon courtoisatobs.univ-lyon1.fr

- Colombi Stephane IAP colombi atiap.fr

- Chevallier Loic Observatoire de Paris loic.chevallieratobspm.fr

- Combes Francoise Observatoire de Paris, LERMA francoise.combesatobspm.fr

- Wozniak Herve CRAL herve.wozniakatobs.univ-lyon1.fr

- Teyssier Romain CEA Saclay romain.teyssieratcea.fr

- Jablonka pascale Observatoire de Geneve pascale.jablonkaatobspm.fr

- Sauvageot Jean-Luc CEA Dapnia/SAp jsauvageotatcea.fr

- Blaizot Jeremy Max-Planck-Institut fur Astrophysik blaizotatmpa-garching.mpg.de

- Courty Stephanie Science Institute/University of Iceland courtyatraunvis.hi.is

- Semelin Benoit LERMA benoit.semelin atobspm.fr

- Emsellem Eric Centre de Recherche Astronomique de Lyon emsellematobs.univ-lyon1.fr

- Sousbie thierry CRAL sousbieatobs.univ-lyon1.fr

- Peirani Sébastien Observatoire de la Cote d’Azur Sebastien.PEIRANIatobs-nice.fr

- Athanassoula lia LAM liaatoamp.fr

- Aubert dominique CEA Saclay dominique.aubertatcea.fr

- Melchior Anne-Laure LERMA, Observatoire de Paris Anne-Laure Melchioratobspm.fr

- Champavert Nicolas CRAL nicolas.champavertatobs.univ-lyon1.fr

- Michal Maciejewski IAP michalmatiap.fr

- Caucci Sara IAP caucciatiap.fr


- Devriendt Julien CRAL devriendtatobs.univ-lyon1.fr

- Slyz Adrianne CRAL adrianne.slyzatens-lyon.fr

- Honore Pierre-Francois DAPNIA/SEDI pfhonoreatcea.fr

- Forero Jaime CRAL foreroatobs.univ-lyon1.fr

- Hasan Prya IUCAA priyaatiucaa.ernet.in

- Slezac Eric OCA Eric.Slezakatobs-nice.fr

- Legrand Francois IAP legrandatiap.fr

- Bournaud frederic LERMA - Paris Observatory frederic.bournaudatobspm.fr

- Tweed Dylan CRAL dylan.tweedatobs.univ-lyon1.fr
- Guiderdoni Bruno CRAL bruno.guiderdoniatobs.univ-lyon1.fr

- Dubois Yohan CEA Saclay yduboisatdapnia.cea.fr

- Audit Edouard CEA/saclay edouard.auditatcea.fr

- da Silva Antonio IAS antonio.dasilvaatias.u-psud.fr

- Tiret Olivier LERMA, Observatoire de Paris olivier.tiretatobspm.fr

- Leborgne Damien CEA/Saclay leborgneatastro.utoronto.ca