rocRAND

rocRAND code for ROCm 6.1.1 did not change. The library was rebuilt for the updated ROCm 6.1.1 stack.

Fixes

• Implemented workaround for regressions in XORWOW and LFSR on MI200

rocRAND code for ROCm 6.0.2 did not change. The library was rebuilt for the updated ROCm 6.0.2 stack.

rocRAND code for ROCm 6.0.0 did not change. The library was rebuilt for the updated ROCm 6.0.0 stack.

rocRAND code for ROCm 5.7.1 did not change. The library was rebuilt for the updated ROCm 5.7.1 stack.

rocRAND code for ROCm 5.7.0 did not change. The library was rebuilt for the updated ROCm 5.7.0 stack.

rocRAND code for ROCm 5.6.1 did not change. The library was rebuilt for the updated ROCm 5.6.1 stack.

rocRAND code for ROCm 5.6.0 did not change. The library was rebuilt for the updated ROCm 5.6.0 stack.

rocRAND code for ROCm 5.5.1 did not change. The library was rebuilt for the updated ROCm 5.5.1 stack.

Added

• MT19937 pseudo random number generator based on M. Matsumoto and T. Nishimura, 1998, Mersenne Twister: A 623-dimensionally equidistributed uniform pseudorandom number generator.
• New benchmark for the device API using Google Benchmark, benchmark_rocrand_device_api, replacing benchmark_rocrand_kernel. benchmark_rocrand_kernel is deprecated and will be removed in a future version. Likewise, benchmark_curand_host_api is added to replace benchmark_curand_generate and benchmark_curand_device_api is added to replace benchmark_curand_kernel.
• experimental HIP-CPU feature
• ThreeFry pseudorandom number generator based on Salmon et al., 2011, "Parallel random numbers: as easy as 1, 2, 3".

Changed

• Python 2.7 is no longer officially supported.

Fixed

• Windows HIP SDK support

rocRAND code for ROCm 5.4.4 did not change. The library was rebuilt for the updated ROCm 5.4.4 stack.

rocRAND code for ROCm 5.4.3 did not change. The library was rebuilt for the updated ROCm 5.4.3 stack.

rocRAND code for ROCm 5.4.2 did not change. The library was rebuilt for the updated ROCm 5.4.2 stack.

rocRAND code for ROCm 5.4.1 did not change. The library was rebuilt for the updated ROCm 5.4.1 stack.

Added

• MRG31K3P pseudorandom number generator based on L'Ecuyer and Touzin, 2000, "Fast combined multiple recursive generators with multipliers of the form a = ±2q ±2r".
• LFSR113 pseudorandom number generator based on L'Ecuyer, 1999, "Tables of maximally equidistributed combined LFSR generators".
• SCRAMBLED_SOBOL32 and SCRAMBLED_SOBOL64 quasirandom number generators. The Scrambled Sobol sequences are generated by scrambling the output of a Sobol sequence.

Changed

• The mrg_<distribution>_distribution structures, which provided numbers based on MRG32K3A, are now replaced by mrg_engine_<distribution>_distribution, where <distribution> is log_normal, normal, poisson, or uniform. These structures provide numbers for MRG31K3P (with template type rocrand_state_mrg31k3p) and MRG32K3A (with template type rocrand_state_mrg32k3a).

Fixed

• Sobol64 now returns 64 bits random numbers, instead of 32 bits random numbers. As a result, the performance of this generator has regressed.
• Fixed a bug that prevented compiling code in C++ mode (with a host compiler) when it included the rocRAND headers on Windows.

rocRAND code for ROCm 5.3.3 did not change. The library was rebuilt for the updated ROCm 5.3.3 stack.

rocRAND code for ROCm 5.3.2 did not change. The library was rebuilt for the updated ROCm 5.3.2 stack.

rocRAND code for ROCm 5.3.1 did not change. The library was rebuilt for the updated ROCm 5.3.1 stack.

Changed

• Increased number of warmup iterations for rocrand_benchmark_generate from 5 to 15 to eliminate corner cases that would generate artificially high benchmark scores.

rocRAND code for ROCm 5.2.3 did not change. The library was rebuilt for the updated ROCm 5.2.3 stack.