Hi sorry for the question, probably it was already discussed.

But I want speed up my application which is solve Ax=b on integer sparse matrices about 230400x230400

Is it real for for CUDA cuSPARSE library?

Currently I use the CPU-based, self-created solver. Which is take A matrix in triplet form, convert it in column compressed form and after apply LU factorization, solve the linear equation.

Thank you.