Release Notes

cuSOLVERMp v0.5.0

• Improved the performance of cusolverMpStedc().

• Introduced a new option to force NCCL usage by setting the CUSOLVERMP_FORCE_NCCL=1 environment flag. This is only applicable in parts of the eigensolver for now.

cuSOLVERMp v0.4.3

• Supported CUDA 12.1.1.

• Fixed a bug that processors are hanging when a problem is tiny and fits in a single processor.

Known Issues

• CUDA 12.1.1 is compatible with NCCL up to v2.16.x; higher NCCL version may hang intermittently for certain processor grids.

cuSOLVERMp v0.4.2

• Fixed a bug in cusolverMpSyevd() that the code returns an internal error for a matrix filled with zero entires; the correct behavior is to return zero eigenvalues and unit eigenvectors.

• Supported CUDA 12.1.1

• Note that the code is compatible with NCCL up to v2.16.x

cuSOLVERMp v0.4.1

• Added support for row major grid in SYEVD.

cuSOLVERMp v0.4.0

• Released with HPC-SDK 23.5.

• Added routines for symmetric (Hermitian) generalized eigen solver

  • cusolverMpSygst() reduces the symmetric (Hermitian) generalized eigen problem to standard form.

  • cusolverMpSygvd() computes all eigenvalues and eigenvectors of symmetric (Hermitian) generalized eigen problem.

cuSOLVERMp v0.3.1

• Released with HPC-SDK 23.3.

• Minor bugfixes are included

  • cusolverMpPotrf() fixes to result cleans zeros of the imaginary part of diagonals.

  • cusolverMpStedc() fixes internal memory leak.

cuSOLVERMp v0.3.0

• Released with HPC-SDK 23.1.

• Removed dependency on MPI, now UCC library is the main communication backend

• Provide the following computational APIs:

  • cusolverMpGeqrf_bufferSize(), cusolverMpGeqrf(), cusolverMpOrmqr_bufferSize(), cusolverMpOrmqr(), cusolverMpGels_bufferSize(), cusolverMpGels(), cusolverMpSytrd_bufferSize(), cusolverMpSytrd(), cusolverMpStedc_bufferSize(), cusolverMpStedc(), cusolverMpOrmtr_bufferSize(), cusolverMpOrmtr(), cusolverMpSyevd_bufferSize(), cusolverMpSyevd().

• Note that cusolverMpGels() currently supports least square solutions with no-transpose option only.

• Note that cusolverMpSytrd(), cusolverMpOrmtr() and cusolverMpSyevd() currently support a lower triangular input matrix only.

cuSOLVERMp v0.2.0

• Released with HPC-SDK 21.09.

• Added support for pp64 + SpectrumMPI, targeting ORNL’s Summit Supercomputer.

• Added Cholesky factorization and solve APIs:

  • cusolverMpPotrf_bufferSize(), cusolverMpPotrf(), cusolverMpPotrs_bufferSize(), cusolverMpPotrs().

• Note that cusolverMpGetrs() does not offer support for multiple right-hand sides at this point.

cuSOLVERMp v0.1.0

• Initial release with HPC-SDK 20.09.

• Support Linux x86_64 and SM 8.0.

• Provide the following computational APIs:

  • cusolverMpGetrf_bufferSize(), cusolverMpGetrf(), cusolverMpGetrs_bufferSize(), cusolverMpGetrs().

• Note that cusolverMpGetrs() does not offer support for multiple right-hand sides at this point.