I have been looking for a GPU accelerated solver for least-squares solutions for overdetermined linear systems and thought that I had found it with
const cusparseMatDescr_t descrA,
const float *csrValA,
const int *csrRowPtrA,
const int *csrColIndA,
const float *b,
For some reason, however, this function doesn’t seem to be implemented (or at least it is not declared in the cusolver header) for CUDA 7.5 (I checked both Windows and Linux versions). Instead, I can only find the host version cusolverSpScsrlsqvqrHost which, when executed, doesn’t seem to do a whole lot (if anything) on the GPU.
Does anyone perchance have an idea of what I might be missing? :)