Forgot your password?
typodupeerror
China Supercomputing Hardware

Full Details Uncovered on Chinese Tianhe-2 Supercomputer 56

Posted by samzenpus
from the under-the-hood dept.
An anonymous reader writes "With help from a draft report (PDF) from Oak Ridge National Laboratory's Jack Dongarra, who also spearheads the process of verifying the top of the pack supercomputer, we get a detailed look at China's Tianhe-2 system. As noted previously, the system will be housed at the National Supercomputer Center in Guangzhou and has been aimed at providing an open platform for research and education and to provide a high performance computing service for southern China. From Jack's details: '... was sent results showing a run of HPL benchmark using 14,336 nodes, that run was made using 50 GB of the memory of each node and achieved 30.65 petaflops out of a theoretical peak of 49.19 petaflops, or an efficiency of 62.3% of theoretical peak performance taking a little over 5 hours to complete.The fastest result shown was using 90% of the machine. They are expecting to make improvements and increase the number of nodes used in the test.'"
This discussion has been archived. No new comments can be posted.

Full Details Uncovered on Chinese Tianhe-2 Supercomputer

Comments Filter:
  • by serviscope_minor (664417) on Monday June 03, 2013 @10:40AM (#43895967) Journal

    The machine uses a mixture of Xeons and Xeon Phi's communicating over PCIe, and the nodes seem to communicate over a home-grown chipset hanging off the PCIe bus. The efficiency number (65%) while not stellar is typical of such machines (i.e. about the same as Titan.

    It would seem therefore that the interconnect is competitive, or at least not restrictive. Given how close it is to Titan, I would not be surprised if the lack of efficiency comes from the relative pain of using fast co-processors which lack decent single threaded speed or memory.

    Anyway, it sll seems respectable enough, though I was hoping it would be a bit more interesting and use the Longsoon variant they've been trying to build a supercomputer out of.

  • and how about the news where two vegan parents were sent to jail when their baby died from malnutrition because they just fed the poor infant plant matter.

    Babies need protein, lots of it. They need meat. Feeding a baby only soy protein or bean protein is child abuse. Humans are designed to eat and digest meat.
    A breast feeding mother needs to increase her protein intake. Even mountain and lowland gorillas, whose diet is entirely vegetarian, consume more protein than we do.

    So meat is not murder, without it, you wouldn't survive infancy.

  • by flayzernax (1060680) on Monday June 03, 2013 @01:37PM (#43897939)

    There is an extreme difference between first world vegans who refuse to step outside of their diet ever and do not practice time honored tradition and read the "science reports' and buy shit food from American companies.

    And real Veganism. Or diets simply light on meat but supplemented with other sources of protein and fat. 1 out of 100 "Vegans" I have ever met even know anything realistic and pragmatic about their diets. That means 99 % of them are idiots killing themselves just as bad as Big Mac Lovers.

    P.S. A varied diet is the best diet you can ever have. The more varied and rich (pun intended) your diet is. The healthier you'll ever be. And every individual has a tendency to want foods that are better suited to their individual needs once you take the sugar and corn syrup off the table.

At the source of every error which is blamed on the computer you will find at least two human errors, including the error of blaming it on the computer.

Working...