Host Architectures
Moving Data
Moving Data
How Do We Measure It?
– Second
– Millisecond (ms or msec) is (10
-3
) one thousandth of a second
– Microsecond (μs or mu) is (10
-6
) one millionth of a second
– Nanosecond (ns or nsec) is (10
-9
) one billionth of a second
– Picosecond is (10
–12
) one trillionth of a second
– Femtosecond is (10
-15
) one quadrillionth of a second
– Attosecond is (10
-18
) one quintillionth of a second
– Zeptosecond is (10
-21
) one sextillionth of a second
– Yoctosecond is (10
-24
) one septillionth
How do we measure time?
Millisecond (ms or msec):
Commonly used in measuring the time to read to, or write from, a
hard disk or a CD-ROM player. Also used to measure packet travel
time on the Internet.
Microsecond (μs or μsec):
Commonly used to measure intra-switch latency, cache latency,
and the time it takes light to traverse an optical link or electricity to
traverse a copper link.
Nanosecond (ns or nsec):
Common measurement of the read or write access time to random
access memory (RAM).
Femtosecond:
Measurement sometimes used in laser technology.
Attosecond:
A term used in photon research.