Complete example of how to use fast_matrix_market.
This directory is explicitly not part of the fast_matrix_market build system, because neither is your project.
The fast_matrix_market subdirectory simulates cloning the repo into a subdirectory of your project. "Simulates" because this directory just contains symlinks into the main repo so that the examples are always up-to-date. The symlinks also demonstrate the parts of the main repo that are necessary to use FMM.
The example CMakeLists.txt uses add_subdirectory(), but of course any of the methods described in the main Installation section of the README will work.
Build using standard CMake commands:
cmake -S . -B cmake-build-debug/ -D CMAKE_BUILD_TYPE=Debug
cmake --build cmake-build-debug/
cmake-build-debug/simple1Defines simple sparse and dense matrices built on std::vector, writes and reads both using fast_matrix_market triplet and array methods.
Generates a random Matrix Market file that has a file size approximately equal to a user-specified target.
Demonstrates FMM's generator functionality.
Sorts the elements of a Matrix Market file, first by row then by column.
Demonstrates FMM's ability to read values into std::string, useful here because the sorted values are never changed by a parse/format cycle, no matter what their type is.
This may be a useful pre-processing utility for cases where the same matrix is loaded multiple times. Some loads can be significantly faster if the elements in the Matrix Market file are already sorted.