Platforms at HLRS, Usage and Programming
Abstract
The course will focus on the major platforms at HLRS:
- Cray XE6 (preliminary system for the next petascale system)
- NEC LX-2400 (Nehalem Cluster, 62 TFlop/s, 5600 cores)
- IBM bwGrid Cluster (46 TFlop/s)
- NEC SX-9 (19 TFlop/s, 192 vector processor cores)
- Cray XT5m (8.5 TFlop/s, 892 cores)
- CUSS (Common Ulm Stuttgart Server)
The course has two days.
- The first day gives an overview on all platforms of HLRS.
- The second day is dedicated to the new Cray XE6 platform.
Seperate registration of individual days is possible. Especially, if one is interested only in the new and upcoming Cray XE6 petascale installation at HLRS, all necessary information is presented on the second day.
General Information
Agenda
Monday, April 18, 2011
Overview on HLRS Platforms -- Access, Usage and Programming
9:00 Introduction (R. Rabenseifner, HLRS)
9:15 HPC Infrastructure Evolution at HLRS (M. Resch, HLRS)
9:45 Platforms at HLRS (M. Hecht, HLRS)
Hardware overview on
Cray XE6, NEC SX-9, Nehalem-Cluster, bwGRID Cluster, Cray XT5
10:15 Coffee
10:30 Access to the Platforms at HLRS (Th. Bönisch, HLRS)
10:45 Cray XE6 and XT5m - Usage and Programming (Chr. Niethammer, HLRS)
(a short overview)
11:30 Preparation for grid usage on bwGrid resources (talk) (M. Hecht, HLRS)
(includes remarks on gsissh)
12:00 Coffee
12:15 bwGrid - Usage and Programming (M. Hecht, HLRS)
(includes also remarks on visualization nodes)
13:00 Lunch
14:00 NEC Nehalem Cluster - Usage and Programming (H. Berger, NEC)
(includes also remarks on NVIDIA/Tesla)
14:45 Coffee
15:00 NEC SX-9 at HLRS - Usage and Programming (St. Haberhauer, NEC)
15:30 Filesystems and HPSS at HLRS (Th. Bönisch, HLRS)
16:00 Coffee
16:20 ISV-Codes and Licenses at HLRS (M. Bernreuther, HLRS)
17:00 Guided tour (HLRS)
18:15 End
Tuesday, April 19, 2011
Cray XE6 Optimization Workshop (S. Andersson, Cray)
9:00 Cray XE6 Architecture
Architecture of Cray XE6
Socket 34 architecture
Gemini Interconnect
9:40 The CRAY Programming Environment - Part I
Modules
Compiler options and flags
10:30 Coffee
10:45 The CRAY Programming Environment - Part II
Aprun options
Batch jobs - How to use the HLRS XE6
Debugging
CCM
11:45 Coffee
12:00 Optimization I
Optimization methodology
Using Craypat to profile applications
12:45 Lunch
13:45 Optimization II
Scaling applications to thousands of processors
MPI optimization
Task placement
15:15 Coffee
15:30 Optimization III
Memory understanding and optimization
Vectorization
Cache blocking examples
16:00 Coffee
16:15 Optimization IV: I/O
Lustre basics
MPI-IO Environment variables
MPI-IO Example
17:30 End
Language
German
Teachers
Thomas Beisel, Katharina Benkert, Jochen Buchholz, Thomas Boenisch, Christoph Niethammer, Martin Bernreuther, Martin Hecht from HLRS, and TBA from Cray and NEC
Registration
Deadline
for registration is Apr. 03, 2011 (extended deadline)
Fee
Members of German universities and public research institutes: none,
others: 150 EUR (includes food and drink at coffee breaks, will be collected on the first day of the course, cash only)
Prerequisites
Programming experience, and partially MPI-1
Travel-Info Stuttgart
See HLRS address and travel-info. The next public transport stations are: "Universität, Stuttgart" (S-Bahn station, 15 min on foot) and "Lauchhau, Stuttgart" (Bus station, 4 min on foot to HLRS, bus lines 84, 92, 746, 747, 748, but not 82! from S-Bahn station "Universität, Stuttgart" and bus line 81 from S-Bahn station "Stuttgart-Vaihingen").
Accomodation: see HLRS accomodation-info. Private Bed&Breakfast is also available (might be cheaper than the hotels), e.g., www.nd-bed-breakfast.de. A DJH youth hostel is also available.
Further links: Online-Stadtplan des Stadtmessungsamtes Stuttgart or www.city-map.de.
CONTACT
Rolf Rabenseifner
phone 0711 685 65530
rabenseifner
hlrs.de