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Last pushed: 5 months ago
Short Description
External-sort Program
Full Description

External-sort Program

  Vikram Basu

Scalable application which can perform normalization on big data.
Application developed in GNU C which can compute Z-Score, Variance and sort
very large input vectors in order of 1 Billion+ using minimal heap memory (1 MB)

Input size of 1,000,000,000 floating point numbers = 9GB
Input size of 1,000,000 floating point number = 9MB

To save on space program has been limited to input of order 10 million.

Usage :
Generate input -> ./main g <size of input>
Sort and create output -> ./main s

Input file name - input.txt (comma-delimited)
Output files - merged_output.txt (contains sorted input)
zscore_output.txt (contains sorted zscores)

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