1. ClearSpeed CSX620 Overview

2. References
ClearSpeed Technical Training Slides for ClearSpeed Accelerator 620, software version 3.0, Slide Sets 1-6, Presentor: Brian Summers (senior engineer), December 2007
Acknowledgement: Many slides used here are from Slide Set 1.
ClearSpeed Introductory Programming Manual, January 2008

4. Topics Overview of ClearSpeed Board ClearSpeed Technology Company
Accelerators
ClearSpeed and HPC
Hardware Overview
Performance
Software Development Kit (SDK)
Application Examples
Help and Support
Topics omitted from ClearSpeed Overview
Installing Hardware and Software
Most topics in SDK overview - Some will be covered later
E.g., Cn Language, Cn Libraries, compiler, debugging Cn, assembler, linker, simulator, graphics profiler, libraries.
Moving Data
Tuning Tips

17. ClearSpeed CSX600 Accelerator Board
A PCI-X card equipped with two ClearSpeed CSX600 coprocessors

23. Performance Specifications of CSX600
Sustained double-precision performance of 25 GFLOPS on DGEMM
10 W max power consumption
250 MHz clock speed
Transfer speed of internal memory: 96 Gbyes/s
Transfer speed of external memory: 3.2 Gbytes/s

24. Multi-threaded Array Processing (MTAP) architecture of CSX600
Mono execution unit
- process non-parallel data
- handle program flow control
Poly execution unit
- 96 PEs
- 6KB SRAM
- dual 64-bit FPU
- integer ALU
- 32/64-bit floating-point multiplier & adder
- 128B register files

56. Cn language Similar to standard C Main difference is poly variables
Example code:
#include <stdiop.h> // Output support
#include <lib_ext.h> // Extra functions to support features of hardware
int main() {
poly int n;
n = get_penum(); // individual PE number
printfp("PE number: %d\n", n); // Output different message per PE return 0; }
poly short get_penum(): number of current PE
mono short get_num_pes(): number of PEs on CSX processor

66. Note: Do not contact ClearSpeed about a homework problem, answering a question, etc. They expect these questions to be professional level questions from owners of their CSX 620 boards – not student questions about their class or homework.