PRACE Cray XT5 Code-Porting Workshop, Switzerland

Jul 13, 2009, 9:30 AM → Jul 15, 2009, 4:00 PM CET

The Swiss National Supercomputing Centre (CSCS) is pleased to announce, in association with the Partnership for Advanced Computing in Europe (PRACE), a three-day Cray XT5 code porting workshop. The workshop will be held from the 13th – 15th July, 2009 at CSCS, Manno and will consist of a series of lectures and “hands-ons” sessions covering fundamental through advanced code optimization and porting techniques. The workshop is open to participants from all PRACE Member countries.

Click here to see the video of the course.

Instructors:

• John Levesque – Director, Cray Supercomputing Center of Excellence
• Luiz DeRose - Cray Supercomputing Center of Excellence
• Roberto Ansaloni – Cray Inc, Italy

Slides http://www.training.prace-ri.eu/events/?tx_typopresscalendar_pi1[uid]=12&no_cache=1

Monday, July 13

9:30 AM → 10:30 AM Architecture of the AMD Quad Core

a. Architectural features that the application developer needs to know
• i. Functional Units
• ii. Cache Architecture
• iii. Memory interface
b. Issues using Quad core node in XT5 MPP

10:30 AM → 10:45 AM Coffee Break

10:45 AM → 11:30 AM Compiler considerations when using the Quad Core

a. Vectorization to use SSE instructions
b. Memory pre-fetching
c. How to use shared memory parallelization in the compiler

11:30 AM → 12:15 PM Using Craypat to profile applications on the XT5

12:15 PM → 2:00 PM Lunch Break

2:00 PM → 4:30 PM Assignment – obtain profiles of your application running on the XT5

Tuesday, July 14

9:00 AM → 10:30 AM Optimizations for the AMD Quad Core

a. Optimization techniques that the application developer needs to know
i. Vectorization
ii. Blocking for cache
iii. Using prefetch directives

10:30 AM → 10:45 AM Coffee Break

10:45 AM → 11:45 AM Using Apprentice to examine hardware counters for understanding cache utilization and vectorization

11:45 AM → 1:30 PM Lunch Break

1:30 PM → 4:30 PM Assignment – optimize your application for node performance

Wednesday, July 15

9:00 AM → 10:30 AM Message Passing Optimizations for the XT5

a. Optimization techniques that the application developer needs to know
i. Pre-posting messages
ii. MPI environment variables

10:30 AM → 10:45 AM Coffee Break

10:45 AM → 11:45 AM Technical Presentation - Joost VandeVondele

11:45 AM → 12:45 PM Using Apprentice to examine MPI performance

12:45 PM → 2:30 PM Lunch Break

2:30 PM → 4:00 PM Assignment – optimize your application for MPI performance