The article was a bit light on the interconnect information: It's called the TH Express-2 (proprietary) and from this report[1]: > The TH Express-2 uses a fat

The article was a bit light on the interconnect information: It's called the TH Express-2 (proprietary) and from this report[1]: > The TH Express-2 uses a fat tree topology with 13 switches each of 576 ports at the top level. This is an optoelectronics hybrid transport technology. Running a proprietary network. The interconnect uses their own chip set. The high radix router ASIC called NRC has a 90 nm feature size with a 17.16x17.16 mm die and 2577 pins. The throughput of a single NRC is 2.56 Tbps. The network interface ASIC called NIC has the same feature size and package as the NIC, the die size is 10.76x10.76 mm, 675 pins and uses PCI-E G2 16X. A broadcast operation via MPI was running at 6.36 GB/s and the latency measured with 1K of data within 12,000 nodes is about 9 us. [1]: http://www.netlib.org/utk/people/JackDongarra/PAPERS/tianhe-2-dongarra-report.pdf http://www.netlib.org/utk/people/JackDongarra/PAPERS/tianhe-...