[ENH] Get rid of deprecated CUDA library calls

[afender]

CuSparse is removing a lot of functions in the next major release https://docs.nvidia.com/cuda/cusparse/index.html.
cuGraph should be updated in order to build with the next major CUDA Toolkit version.

Many calls are related to spectral clustering which should be refactored and moved into RAFT #868

[aschaffer]

I can switch the SpMv mechanism to use raft::sparse_matrix_t::mv(), which should also cover CUDA 11, but I need a raft::handle_t for that. Can I create one on-the-fly in the client code (i.e., cugraph code that calls SpMv, formerly CusparseCsrMV) ? Or, else, where do I get the raft handle from?

[aschaffer]

Also, I assume CusparseCsrMV is to be removed completely, correct?

[aschaffer]

It looks like the only remaining dependency is in src/utilities/spmv_1D.cu(h) via src/utilities/cusparse_helper.h(cu) on cusparseCsrmvEx(...). But that does not seem to be deprecated. In fact, I'm not sure if I should touch that code at all. No other dependencies remain: certainly no other cusparse or cublas calls. So, then should I replace/remove the above code, and if so with what? Some clarifications would help. Thanks in advance.

[aschaffer]

Relevant PRs:

1. [REVIEW] Remove deprecated CUDA library calls #1019
2. [REVIEW] Update to better cusparseSpMv() to support removal of deprecated cusparse calls in cugraph raft#41 (merged)

[aschaffer]

Completed. Closing.