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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Dorojevets, M. Bunyk, P. Zinoviev, D. Likharev, K. |
| Copyright Year | 2002 |
| Abstract | We discuss a preliminary design of a Rapid Single-Flux-Quantum (RSFQ) subsystem for general-purpose computers with petaflops-scale performance. The subsystem is being developed at Stony Brook within the framework of the Hybrid Technology MultiThreading (HTMT) project. COOL-0 design is based on 0.8-/spl mu/m RSFQ technology which enables the implementation of superconductor processing elements (SPELLs) operating at clock frequencies up to 100 GHz pipelined cryo-memory (CRAM) with 30 ps cycle time and interprocessor network (CNET) with a bandwidth of 30 Gbps per channel. The main architectural challenge is an almost 1,000-fold speed difference between the RSFQ processors and room-temperature SRAM comprising the second level of the HTMT memory hierarchy. The proposed solution to the problem is hardware support for two-level multithreading and block transfer techniques in SPELLs. Our preliminary estimates show that an RSFQ subsystem with 4 K SPELLs and a 4-Gbyte CRAM may be sufficient to achieve the performance close to 0.5 petaflops for computationally intensive program kernels. COOL-0 would occupy a physical space of about 0.5 m/sup 3/ and dissipate power as low as 250 Watts (at helium temperature). These numbers present a dramatic improvement compared to a hypothetical purely-semiconductor petaflops-scale computer. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 3606 |
| Ending Page | 3614 |
| Page Count | 9 |
| File Size | 1108715 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 9 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Multithreading Clocks Frequency Bandwidth Random access memory Hardware Kernel Space cooling Temperature |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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