The Experts below are selected from a list of 54 Experts worldwide ranked by ideXlab platform
Andrew A. Chien - One of the best experts on this subject based on the ideXlab platform.
-
ZCCloud: Exploring Wasted Green Power for High-Performance Computing
2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016Co-Authors: Fan Yang, Andrew A. ChienAbstract:In Supercomputer centers, available power, cooling, or carbon footprint often limits Supercomputer Performance. We propose a new approach to continue scaling that avoids many of these limits, augmenting a traditional system with another that employs only "wasted" renewable power, stranded power. This excess power cannot be economically distributed through grid, and is only intermittently available. We call this approach Zero-carbon Cloud (ZCCloud). We explore the potential benefits of unreliable resources with production DOE HPC workloads using a simple periodic model, and identify job types that benefit most (capability jobs and on-time jobs). The benefits scale with duty factor and resource quantity. Next, to create realistic models of "stranded power" we study 28 months of Mid-continent Independent System Operator (MISO) power market history (1,259 generators, 77 million 5-minute intervals). We find that opportunity varies, but the best single wind site can provide 80% duty factor, and 20MW average stranded power. Combining sites further improves duty factor. With resource volatility models from the MISO study, we simulate production DOE HPC workloads and find that stranded power HPC, ZCCloud, can provide significant benefit, decreasing average job-wait time by 50%.
Fan Yang - One of the best experts on this subject based on the ideXlab platform.
-
ZCCloud: Exploring Wasted Green Power for High-Performance Computing
2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2016Co-Authors: Fan Yang, Andrew A. ChienAbstract:In Supercomputer centers, available power, cooling, or carbon footprint often limits Supercomputer Performance. We propose a new approach to continue scaling that avoids many of these limits, augmenting a traditional system with another that employs only "wasted" renewable power, stranded power. This excess power cannot be economically distributed through grid, and is only intermittently available. We call this approach Zero-carbon Cloud (ZCCloud). We explore the potential benefits of unreliable resources with production DOE HPC workloads using a simple periodic model, and identify job types that benefit most (capability jobs and on-time jobs). The benefits scale with duty factor and resource quantity. Next, to create realistic models of "stranded power" we study 28 months of Mid-continent Independent System Operator (MISO) power market history (1,259 generators, 77 million 5-minute intervals). We find that opportunity varies, but the best single wind site can provide 80% duty factor, and 20MW average stranded power. Combining sites further improves duty factor. With resource volatility models from the MISO study, we simulate production DOE HPC workloads and find that stranded power HPC, ZCCloud, can provide significant benefit, decreasing average job-wait time by 50%.
Satoshi Matsuoka - One of the best experts on this subject based on the ideXlab platform.
-
tsubame kfc a modern liquid submersion cooling prototype towards exascale becoming the greenest Supercomputer in the world
International Conference on Parallel and Distributed Systems, 2014Co-Authors: Toshio Endo, Akira Nukada, Satoshi MatsuokaAbstract:Modern Supercomputer Performance is principally limited by power. TSUBAME-KFC is a state-of-the-art prototype for our next-generation TSUBAME3.0 Supercomputer and towards future exascale. In collaboration with Green Revolution Cooling and others, TSUBAME-KFC submerges compute nodes configured with extremely high processor/component density, into non-toxic, low viscosity oil with high 260 Celsius flash point, and cooled using ambient / evaporative cooling tower. This minimizes cooling power while all semiconductor components kept at low temperature to lower leakage current. Numerous off-line in addition to on-line power and temperature sensors are facilitated throughout and constantly monitored to immediately observe the effect of voltage/frequency control. As a result, TSUBAME-KFC achieved world No.1 on the Green500 in Nov. 2013 and Jun. 2014, by over 20% c.f. the nearest competitors.
Michael W Parkin - One of the best experts on this subject based on the ideXlab platform.
-
s connect from networks of workstations to Supercomputer Performance
International Symposium on Computer Architecture, 1995Co-Authors: Andreas Nowatzyk, Michael C Browne, Edmund J Kelly, Michael W ParkinAbstract:S-Connect is a new high speed, scalable interconnect system that has been developed to support networks of workstations to efficiently share computing resources. It uses off-the-shelf CMOS technology to directly drive fiber-optic systems at speeds greater than 1 Gbit/sec and can realize bisection bandwidths comparable to high-end MPP systems while being >10x more cost-effective. S-Connect systems do not rely on centralized switches, but rather are composed of adaptive, topology independent routing elements that are integrated into each node. The S-Connect routing algorithm is optimized for fine grained, irregular traffic and is designed to support high traffic loads, that can utilize most of the physically available bandwidth. Such traffic is typical of a distributed shared memory system, which is one of the intended applications. S-Connect innovations include a novel distributed phase locking method that allows global synchronization, HW support for multiple message priorities, in-band monitoring and control facilities, and a low overhead channel protocol that supports multiple in-transit messages on the same fiber.The first version of the S-Connect switching element has been successfully implemented in a commercial, 0.65 µm CMOS process.
Toshio Endo - One of the best experts on this subject based on the ideXlab platform.
-
tsubame kfc a modern liquid submersion cooling prototype towards exascale becoming the greenest Supercomputer in the world
International Conference on Parallel and Distributed Systems, 2014Co-Authors: Toshio Endo, Akira Nukada, Satoshi MatsuokaAbstract:Modern Supercomputer Performance is principally limited by power. TSUBAME-KFC is a state-of-the-art prototype for our next-generation TSUBAME3.0 Supercomputer and towards future exascale. In collaboration with Green Revolution Cooling and others, TSUBAME-KFC submerges compute nodes configured with extremely high processor/component density, into non-toxic, low viscosity oil with high 260 Celsius flash point, and cooled using ambient / evaporative cooling tower. This minimizes cooling power while all semiconductor components kept at low temperature to lower leakage current. Numerous off-line in addition to on-line power and temperature sensors are facilitated throughout and constantly monitored to immediately observe the effect of voltage/frequency control. As a result, TSUBAME-KFC achieved world No.1 on the Green500 in Nov. 2013 and Jun. 2014, by over 20% c.f. the nearest competitors.