rocSPARSE 4.0.2 for ROCm 7.0.0

Added

• Adds SpGEAM generic routine for computing sparse matrix addition in CSR format
• Adds v2_SpMV generic routine for computing sparse matrix vector multiplication. As opposed to the deprecated rocsparse_spmv routine, this routine does not use a fallback algorithm if a non-implemented configuration is encountered and will return an error in such a case. For the deprecated routine rocsparse_spmv, the user can enable warning messages in situations where a fallback algorithm is used by either calling upfront the routine rocsparse_enable_debug or exporting the variable ROCSPARSE_DEBUG (with the shell command export ROCSPARSE_DEBUG=1).
• Adds half float mixed precision to rocsparse_axpby where X and Y use float16 and result and the compute type use float
• Adds half float mixed precision to rocsparse_spvv where X and Y use float16 and result and the compute type use float
• Adds half float mixed precision to rocsparse_spmv where A and X use float16 and Y and the compute type use float
• Adds half float mixed precision to rocsparse_spmm where A and B use float16 and C and the compute type use float
• Adds half float mixed precision to rocsparse_sddmm where A and B use float16 and C and the compute type use float
• Adds half float uniform precision to rocsparse_scatter and rocsparse_gather routines
• Adds half float uniform precision to rocsparse_sddmm routine
• Added rocsparse_spmv_alg_csr_rowsplit algorithm.
• Added support for gfx950
• Add ROC-TX instrumentation support in rocSPARSE (not available on Windows or in the static library version on Linux).
• Added the almalinux OS name to correct the gfortran dependency

Changed

• Switch to defaulting to C++17 when building rocSPARSE from source. Previously rocSPARSE was using C++14 by default.

Optimized

• Reduced the number of template instantiations in the library to further reduce the shared library binary size and improve compile times
• Allow SpGEMM routines to use more shared memory when available. This can speed up performance for matrices with a large number of intermediate products.
• Use of the rocsparse_spmv_alg_csr_adaptive or rocsparse_spmv_alg_csr_default algorithms in rocsparse_spmv to perform transposed sparse matrix multiplication (C=alpha*A^T*x+beta*y) resulted in unnecessary analysis on A and needless slowdown during the analysis phase. This has been fixed by skipping the analysis when performing the transposed sparse matrix multiplication.
• Improved the user documentation

Resolved issues

• Fixed an issue in the public headers where extern "C" was not wrapped by #ifdef __cplusplus, which caused failures when building C programs with rocSPARSE.
• Fixed a memory access fault in the rocsparse_Xbsrilu0 routines.
• Fixed failures that could occur in rocsparse_Xbsrsm_solve or rocsparse_spsm with BSR format when using host pointer mode.
• Fixed ASAN compilation failures
• Fixed failure that occurred when using const descriptor rocsparse_create_const_csr_descr with the generic routine rocsparse_sparse_to_sparse. Issue was not observed when using non-const descriptor rocsparse_create_csr_descr with rocsparse_sparse_to_sparse.
• Fixed a memory leak in the rocsparse handle

Removed

• The deprecated rocsparse_spmv_ex routine
• The deprecated rocsparse_sbsrmv_ex, rocsparse_dbsrmv_ex, rocsparse_cbsrmv_ex, and rocsparse_zbsrmv_ex routines
• The deprecated rocsparse_sbsrmv_ex_analysis, rocsparse_dbsrmv_ex_analysis, rocsparse_cbsrmv_ex_analysis, and rocsparse_zbsrmv_ex_analysis routines

Upcoming changes

• Deprecated the rocsparse_spmv routine. Users should use the rocsparse_v2_spmv routine going forward.
• Deprecated rocsparse_spmv_alg_csr_stream algorithm. Users should use the rocsparse_spmv_alg_csr_rowsplit algorithm going forward.
• Deprecated the rocsparse_itilu0_alg_sync_split_fusion algorithm. Users should use one of rocsparse_itilu0_alg_async_inplace, rocsparse_itilu0_alg_async_split, or rocsparse_itilu0_alg_sync_split going forward.