Cannot manage to use cuSOLVER to solve a linear system

Accelerated Computing GPU-Accelerated Libraries
1

Hi guys,

Can anyone help me with this?

[url]c++ - cuSolver doesn't return the correct solution - Stack Overflow

All the info and source code is already provided there. Basically I’m solving a linear system using QR factoring, the matrix A is not singular in theory and it should return a vector not equal to 0, the return value of the QR solver is CUSOLVER_STATUS_INTERNAL_ERROR, but it doesn’t given much of a clue of what is going on.

2

Some more info:

  1. Cuda capabilities 6.1.
  2. OS windows 10
  3. Graphics Card GTX 1070

All drivers, toolkit etc are the latest version.

3

Hi, have you problem solved ? i also have some problems when using the QR solver. The solver works when the sparse matrix is small (eg.600600 ) but it gives wrong answers when the sparse matrix is large (eg. 1000010000). have you ever subjected to problems like this?

4

Hi,

Can you share your code?
At last it was working for me.