Toward a Software Infrastructure for the Cyclops-64 Cellular Architecture

This paper presents the initial design of the Cyclops-64 (C64) system software infrastructure and tools under development as a joint effort between IBM T.J. Watson Research Center, ETI Inc. and the University of Delaware. The C64 system is the latest version of the Cyclops cellular architecture that consists of a large number of compute nodes each employs a multiprocessor-on-a-chip architecture with 160 hardware thread units. The first version of the C64 system software has been developed and is now under evaluation. The current version of the C64 software infrastructure includes a C64 toolchain (compiler, linker, functionally accurate simulator, runtime thread library, etc.) and other tools for system control (system initialization, diagnostics and recovery, job scheduler, program launching, etc.) This paper focuses on the following aspects of the C64 system software: (1) the C64 software toolchain; (2) the C64 Thread Virtual Machine (C64 TVM) with emphasis on TiNy ThreadsTM, the implementation of the C64 TVM; (3) the system software for host control. In addition, we illustrate, through two case studies, what an application developer can expect from the C64 architecture as well as some advantages of this architecture, in particular, how it provides a cost-effective solution. A C64 chip's performance varies across different applications from 5 to 35 times faster than common off-the-self microprocessors.