Lecture 05 - Chapter 03 - Examples

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National College of Business Administration & Economics ( NCBA&E)

Muhammad Haroon, a PhD student enrolled in CS at HITEC University Taxila, presented a lecture on measures of location as part of a probability and statistics course. The lecture discussed chapter 3, part 2 of the topic, focusing on various measures used to describe the central tendency of a data set, including the mean, median and mode.

Education

Probability & Statistics BSCS
Muhammad Haroon-PhD Enrolled (CS) from HITEC University Taxila mr.harunahmad2014@gmail.com
Probability & Statistics
(Lecture # 05)
Chapter # 03 (Part 02)
Measures of Location
by
Muhammad Haroon

Probability & Statistics BSCS
Muhammad Haroon-PhD Enrolled (CS) from HITEC University Taxila mr.harunahmad2014@gmail.com

This document discusses various communication operations that are commonly used in parallel and distributed systems, including one-to-one, one-to-all, all-to-all, all-to-one, and personalized communication. It describes how these basic operations can be implemented on different network topologies like rings, meshes, and hypercubes. The communication costs for different operations on these networks are analyzed and illustrated with examples. Optimal algorithms for all-to-all personalized communication on hypercubes are also presented.

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

The document discusses models of parallel computers and interconnection networks. It describes the PRAM model of parallel computation which has uniform memory access and multiple identical processors. There are four subclasses of PRAM based on memory access protocols: EREW, CREW, ERCW, and CRCW. Static interconnection networks use direct point-to-point links between nodes while dynamic networks use switches to dynamically connect nodes. Topologies include bus-based, crossbar, multistage, completely connected, star, linear array, ring, and mesh networks. Performance and cost aspects of different networks are also analyzed.

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

The document discusses Python comments and variables. It explains that comments in Python begin with # and can be placed on their own line or at the end of a line. Multiline comments can use multiple # or triple quotes. Variables do not need declaration and are created when a value is assigned. Variable names can be short or descriptive and have certain naming rules. The data types in Python include strings, integers, floats, complexes and various sequence, mapping and set types. The type of an object can be checked with type() and data types are set automatically based on the value assigned.

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National College of Business Administration & Economics ( NCBA&E)

The document discusses measures of location or averages in statistics. It defines the arithmetic mean as the sum of all values in a data set divided by the number of values. The population mean is denoted by μ, while the sample mean is denoted by Y bar. It also mentions other types of averages like geometric mean, harmonic mean, median and mode. Properties of a good average are listed as being clearly defined, easy to calculate, simple to understand, based on all observations, and not affected by outliers.

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National College of Business Administration & Economics ( NCBA&E)

Flynn's taxonomy classifies parallel computers based on whether they have a single or multiple instruction/data streams. Common architectures include SISD (serial), SIMD (single instruction on multiple data), MISD (multiple instructions on single data), and MIMD (multiple instructions on multiple data). Shared memory machines provide a global address space but do not scale well, while distributed memory machines use message passing between separate memory spaces and scale better. Current high-performance machines include Blue Gene, Earth Simulator, and large clusters.

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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National College of Business Administration & Economics ( NCBA&E)

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