BRL-CAD (Org ID 5154791065911296)
Task ID 6550245477449728 | Task Definition ID 6078297702137856
Max instances: 2

Title: Write program comparing performance of bn_randmt vs SFMT (vs C++ STL)
Description: The goal of this task is to create a simple little test program that compares the performance of BRL-CAD's merzenne twister random number generator (bn_randmt) with the SFMT implementation.  Although there are usage examples all throughout the BRL-CAD codebase, you can find bn_randmt's API header in:
* include/bn

See the SFMT site for instructions on compiling their code:
* http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/

Seeing how the performance compares against the C++ standard library implementation would be very informative as well.

You should use bu_gettime() as a stopwatch timer: e.g., int64_t start = bu_gettime(); printf("elapsed is %lf\n", bu_gettime() - start);

Compare performance drawing random numbers.  Do they match if you use the same or a nearby seed?  You can use any build system you want (e.g., CMake) or rely on direct compilation, or just provide a compile-line that will work if we assume BRL-CAD is installed.

SUBMIT your program sourcecode with instructions on how to compile and run.
Tags: performance, testing, c/c++

Categories: Coding, Quality Assurance
Is Beginner: No
Time given to complete: 3 days

Mentors: brlcad@gmail.com, vasco.costa@gmail.com, DanielMRossberg@gmail.com
Student: Mahdi Dolatabadi (ID 4776983546298368)

Status: COMPLETED (2017-12-29 17:17:56)
Last modified: 2017-12-29 07:20:34