matrix_vector_multiplication

Matrix-Vector Multiplication

Simple example that multiplies a matrix A (height × width) by a vector B (width) producing vector C (height) using a straightforward GPU kernel.

Build

cd matrix_vector_multiplication
make

Usage

./matrixVectMul [--width W] [--height H] [--threads T]

Options:

Flag	Description	Default
--width	Matrix width / vector length	1024
--height	Matrix height / output length	1024
--threads	Threads per block	256

Run

./run.sh --width=2048 --height=1024 --threads=128

Profiling

# Profile with nvprof
./profile_nvprof.sh --width=2048 --height=1024

# Use profiling tools
../profiling_tools/profile_cuda.sh -d .

Notes

• This implementation demonstrates per-row parallelization where each thread computes one output element.
• Intentionally simple; does not use shared-memory tiling or other optimizations.
• Use NVCCFLAGS in the Makefile to tune compile flags.