Changes

Jump to: navigation, search

GPU610 Team Tsubame

5 bytes removed, 23:49, 9 February 2017
Assignment 1
== Progress ==
== Assignment PHASE 1 ==
=== Pi ===
This is a comparison between two programs that calculate Pi.
40 }
* '''Stage STAGE 1 - Big-O:'''
There is only one for loop in this program (on line 18); it executes ''d'' times, where ''d'' is the first argument provided to the program on the command line. Summing up the operations in the (predicted) hotspot, T(n) = 11n + 3; therefore O(n) runtime.
* '''Stage STAGE 2 - Potential Speedup
Using Amdahl's Law:
P = 1708ms / 1725ms (using the third test data from below...)
The maximum speedup on the test system is approximately 33 times.
* '''Stage STAGE 3 - Test Runs'''
''The following tests were done on the Matrix server:''
57 }
* '''Stage STAGE 1 - Big-O:'''
The (predicted) hotspot begins from line 35 and ends at line 44. Although there are two for loops, the outer for loop executes ''n'' / ''stride'' times while the inner for loop executes ''stride'' times; the actual iteration is just ''n'' ( O(n) runtime ).
* '''Stage STAGE 2 - Potential Speedup:'''
Using Amdahl's Law:
P = 10883ms / 10903ms (using the last sample of the third test data from below...)
The maximum speedup on the test system is approximately 44 times.
* '''Stage STAGE 3 - Test Runs'''
''The following tests were done on the Matrix server:''
240
edits

Navigation menu