ISC'14

June 22–26, 2014
Leipzig, Germany

Presentation Details

 
Name: Tofu Interconnect 2: System-on-Chip Integration of High-Performance Interconnect
 
Time: Wednesday, June 25, 2014
12:30 pm - 12:45 pm
 
Room:   Hall 3
CCL - Congress Center Leipzig
 
Speaker:   Yuichiro Ajima, Fujitsu
 
Abstract:   The Tofu Interconnect 2 (Tofu2) is a system interconnect designed for the new generation supercomputer of Fujitsu’s PRIMEHPC FX series. To-fu2 inherited the 6-dimensional mesh/torus network topology from its predeces-sor, and it increases the link throughput by two and half times. It is integrated into a newly developed SPARC64TM processor chip and takes advantages of system-on-chip implementation by removing off-chip I/O between a processor chip and an interconnect controller. Tofu2 also introduces new features such as the atomic read-modify-write communication functions, the session-mode con-trol queue for the offloading of collective communications, harmless cache in-jection technique to reduce communication latency, and system-mode RDMA for overhead reduction of system-wide communication.

Authors
Yuichiro Ajima, Tomohiro Inoue, Shinya Hiramoto, Shunji Uno, Shinji Sumimoto, Kenichi Miura, Naoyuki Shida, Takahiro Kawashima, Takayuki Okamoto, Osamu Moriyama, Yoshiro Ikeda, Takekazu Tabata, Takahide Yoshikawa, Ken Seki & Toshiyuki Shimizu, Fujitsu Limited