Here is a list of all files with brief descriptions:

[detail level 123]

▼ common
▼ helper
helper.cpp
helper.hpp	Some generic helper functions for programs
▼ sigmaodd
divisors.cpp
divisors.hpp	Functions in link with divisor notion: sum of divisors, factorization, GCD, coprime, ..
divisors__inline.hpp
dot.cpp
dot.hpp	To produce graph DOT file
harmonic.cpp
harmonic.hpp	Function to calculate harmonic number H_n = 1 + 1/2 + 1/3 + 1/4 + ... + 1/n and some variants and upper bounds
harmonic__inline.hpp
helper.cpp
helper.hpp	Define type and some generic functions
helper__inline.hpp
pentagonal.cpp
pentagonal.hpp	Functions to calculate pentagonal numbers and one useless algorithm that used the Euler formula to calculate the sum of divisors
pentagonal__inline.hpp
primes.cpp
primes.hpp	Functions to access to tables of precaculated prime numbers and offsets to iterate on possible prime numbers
primes__inline.hpp
sigmaodd.cpp
sigmaodd.hpp	Main functions to deal the sigma_odd problem
benchmarks.cpp	Some benchmarks for the sigma_odd problem
benchmarks_big.cpp	Some benchmarks for the sigma_odd problem, only on some "big" numbers
bounds.cpp	Some upper bounds for the sigma_odd problem
check_varsigma_odd.cpp	Check odd numbers for the varsigma_odd problem and print bad and perfect square numbers
table.cpp	Print tables of sigma_odd results by several algorithms
table_harmonic.cpp	Print same information in the same format than ../../miscellaneous/harmonic/harmonic.py, to compare and check correction
varsigmaoddprob.cpp	The varsigma_odd problem
▼ mpi
▼ mpi
mpi.cpp
mpi.hpp	Implementation of the message-passing (MPI) algorithms presented in the report
mpi__inline.hpp
check_gentle_mpi.cpp	Check odd gentle numbers for the varsigma_odd problem and print bad numbers
▼ opencl
▼ opencl
helper.cpp
helper.hpp	Helper functions for the OpenCL
opencl.cpp
opencl.hpp	Implementation of the OpenCL parallel algorithms presented in the report
▼ opencl_src
sigmaodd.cl	OpenCL implementation to check the sigma_odd problem, mostly like the other implementations but without the advantage of the shortcut in the factorization. If your GPU supports not too old OpenCL version, use the specific function ctz into divide_until_odd() instead the manual computation. Some tips used: "optimizing specifically for Processor Graphics OpenCL* device, ensure all conditionals are evaluated outside of code branches" https://software.intel.com/sites/landingpage/opencl/optimization-guide/Notes_on_Branching_Loops.htm
check_gentle_opencl.cpp	Check odd gentle numbers for the varsigma_odd problem and print bad numbers
opencl_infos.cpp	Print infos about OpenCL platforms and devices
start_opencl.cpp	Run an OpenCL program on some little numbers without printing, only to "start" OpenCL capabilities
▼ sequential
▼ sequential
sequential.cpp
sequential.hpp	Implementation of the sequential algorithms presented in the report. (Some functions are not use in this part. There are present here to be used by several parallel implementation.)
sequential__inline.hpp
check_gentle_sequential.cpp	Check odd gentle numbers for the varsigma_odd problem and print bad numbers
check_load.cpp	Check numbers loaded from a file for the varsigma_odd problem and print bad numbers or all, with or without path
check_multiplicativity.cpp	Varsigma_odd is multiplicative, this program check if there exists some (a, b) not coprimes such that there is equality
check_square.cpp	Check odd square numbers for the varsigma_odd problem and print some numbers to show progression
interactive.cpp	Read number from stdin and print factorization, number of divisors, sum of divisors and complete path of the varsigma_odd problem
print_path.cpp	Check odd gentle numbers for the varsigma_odd problem and print bad numbers
▼ threads
▼ threads
threads.cpp
threads.hpp	Implementation of the threads parallel algorithms presented in the report
check_gentle_threads.cpp	Check odd gentle numbers for the varsigma_odd problem and print bad numbers
doxymain.hpp	Empty header file to define main page of Doxygen documentation