guide:glossary
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Table of Contents
Glossary
High Performance Computing
- The use of parallel processing for running advanced application programs efficiently, reliably and quickly.
Supercomputer
- A system that performs at or near the currently highest operational rate for computers. Some supercomputers work at over half a petaflop or 1015 floating-point operations per second.
FLOPS
- Number of floating point operations per clock cycle
Peak Performance
- Peak Flops, the theoretical measure of floating point potential
Sustained Performance
- As measured by LinPack (http://www.top500.org)
HPI
- High Performance Interconnect
- This usually means Infiniband
Grid
- Originally born out of high performance computing
- Enhancing the capability of the network of things rather than making applications run faster
Cluster
- Group of tightly coupled (usually with a high performance interconnect) computers that work together
Beowulf Cluster
- Commodity based cluster COTS (commodity-off-the-shelf) components
- Linux, Intel/AMD
Compute Farm
- Loosely coupled cluster (no high performance interconnect)
Single Precision
- 32 bits
- Significand of 24 bits
- Exponent of 7 bits
- 1 sign bit
Double Precision
- 64 bits
- Significand of 52 bits
- Exponent of 11 bits
- 1 sign bit
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