Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-07-20
NewAstron.13:418-435,2008
Astronomy and Astrophysics
Astrophysics
Accepted for publication in New Astronomy
Scientific paper
10.1016/j.newast.2007.12.005
In this paper, we describe the architecture and performance of the GraCCA system, a Graphic-Card Cluster for Astrophysics simulations. It consists of 16 nodes, with each node equipped with 2 modern graphic cards, the NVIDIA GeForce 8800 GTX. This computing cluster provides a theoretical performance of 16.2 TFLOPS. To demonstrate its performance in astrophysics computation, we have implemented a parallel direct N-body simulation program with shared time-step algorithm in this system. Our system achieves a measured performance of 7.1 TFLOPS and a parallel efficiency of 90% for simulating a globular cluster of 1024K particles. In comparing with the GRAPE-6A cluster at RIT (Rochester Institute of Technology), the GraCCA system achieves a more than twice higher measured speed and an even higher performance-per-dollar ratio. Moreover, our system can handle up to 320M particles and can serve as a general-purpose computing cluster for a wide range of astrophysics problems.
Chien Chia-Hung
Chiueh Tzihong
Schive Hsi-Yu
Tsai Yu-Chih
Wong Shing-Kwong
No associations
LandOfFree
Graphic-Card Cluster for Astrophysics (GraCCA) -- Performance Tests does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Graphic-Card Cluster for Astrophysics (GraCCA) -- Performance Tests, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphic-Card Cluster for Astrophysics (GraCCA) -- Performance Tests will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-398359