0. A request from user group
Geant4 Technical Meeting
March 6, 2012
A request from user group
Kihyeon Cho
High Energy Physics Team, KISTI

1. PI: Kihyeon Cho & Soonwook Hwang Sponsor: Creative project by KISTI
Project Outline
Title: Development of Geant4 for medical physics and High Energy physics
PI: Kihyeon Cho & Soonwook Hwang
Sponsor: Creative project by KISTI
Budget: Around half million dollar
Period: Jan. 1, 2012~ Dec. 31, 2012
Goal:
Porting on Supercomputing
Simulation for HEP and Medical physics using Geant4
Profiling and Large-scale test, evaluation and improvement
Geant4 multi-proecssing R&D

2. / Massachusetts General Hospital
Global Community
(FKPPL)
International
Collaboration
HEP
Medical Physics
Appli-cation
HEP
- Accelerator R&D
- Detector, …
Medical Physics
Proton Accelerator, ..
Fermilab
- Next generation
simulation package development
UC SanFrancisco
/SLAC
/ Massachusetts General Hospital
Proton Accelerator GEANT4 Application
TOPAS
R&D
Geant4 Collaboration
code development
Geant4 R&D
Infra-structure
Grid Farm
Supercomputer
CERN
IN2P3
KEK

3. Geant4 R&D Work on Progress Supercomputing Porting
SUN Cluster Porting - Geant4-ST, MPI, ParGeant4
Single-thread performance measurement and analysis
Profiling and optimization
Parallel Computing Using multi processing (core)
-> Fermilab
Understanding and Improvement of Single thread
Geant4 profiling protocol code
Long term project: Multi-core R&D

4. HEP Application (중이온가속기 등)
Beam/Accelerator simulation
Secondary beam simulation
Detector simulation
Calorimeter
Silicon Detector
RENO Detector…
User group simulation
Requested by user group
Astro-nuclear decay channel simulation
By Prof. Myung-Ki Cheoun’s group (SSU)
Understanding decay channel
Requirement soft ware

5. Simulation on secondary beam
Object
Geant4 Simulation for secondary beams and dE/dx
Method
To analyze secondary beam depending on incident beam energy, target material, interaction model, …
Output
Secondary particles
Energy dissipation…

8. 2. Geant4 MPI Interface (KEK) (Mandatory)
Schedule
1. Geant4 ST (Mandatory)
Tachyon Porting (3월초까지)
By Taegil Bae
2. Geant4 MPI Interface (KEK) (Mandatory)
Tachyon Porting (3월 초까지)
3. ParGeant4 (Optional)
Tachyon Porting (3월 말까지)
4. Astro-Nuclear Theory Channel (R&D)
Tachyon Poring (4월부터~)

9. OS: RedHat Enterprise Linux 5.3
Tachyon
설치장소: Tachyon 2차분
OS: RedHat Enterprise Linux 5.3

10. Interconnection Network
Resources
Hardware Specification : Tachyon
Cluster system
Ranked at 15th in top500 in Nov. 2009
Tachyon(SUN)
Phase 1
Phase 2
Manufacture
SUN Blade 6048
Architecture
cluster
Process model
AMD(Barcelona)
Intel (Nehalem)
# of Nodes
188 nodes
3,200 nodes
# of CPU cores
3,008
(16 per node)
25,600
(8 per node)
Rpeak
(Tflops) 24
300
324
Total Memory
6TB
76TB
Disk Storage
207TB
1.2PB
Tape Storage
422TB
2PB
Interconnection Network
IB 4X DDR
IB 4X QDR
[SUN Blade 6048]

11. Option 1 Option 2 Option3 Directory @ Tachyon2
/applic/applications/hep/Geant4/
cernlib
ROOT
CLHEP
Option 2
/applic/applications/Geant4
Option3
/applic/hep/Geant4

12. Supercomputing porting (4월~)
Schedule
Geant4 Workshop
Date: April 13~14
Place: Tongyong, Korea
Contents
April 13 (Friday) => Medical Physics workshop
April 14 (Saturday Morning) => Geant4 Workshop
User requirement
Medical Physics
Astro-nuclear physics
Supercomputing porting (4월~)
Medical physics
Astor-nuclear Physics
Geant4 Tutorial (10월)
Date: October

13. Geant4 profiling Optimization Long term Fermilab side
Multi-core (GPU, KUDA, MT, etc) profiling

14. UCSF side
From tangible things

15. Thanks