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Change Log for rocThrust

Full documentation for rocThrust is available at https://rocthrust.readthedocs.io/en/latest/

(Unreleased) rocThrust 2.17.0 for ROCm 6.0

Added

  • Updated to match upstream Thrust 2.0.1
  • NV_IF_TARGET macro from libcu++ for NVIDIA backend and HIP implementation for HIP backend.

Changed

  • Removed cub symlink from the root of the repository.
  • Removed support for deprecated macros (THRUST_DEVICE_BACKEND and THRUST_HOST_BACKEND).
  • The cmake build system now additionally accepts GPU_TARGETS in addition to AMDGPU_TARGETS for setting the targeted gpu architectures. GPU_TARGETS=all will compile for all supported architectures. AMDGPU_TARGETS is only provided for backwards compatibility, GPU_TARGETS should be preferred.

Known issues

  • For NVIDIA backend, NV_IF_TARGET and THRUST_RDC_ENABLED intend to substitute the THRUST_HAS_CUDART macro, which is now no longer used in Thrust (provided for legacy support only). However, there is no THRUST_RDC_ENABLED macro available for the HIP backend, so some branches in Thrust's code may be unreachable in the HIP backend.

(Unreleased) rocThrust 2.18.0 for ROCm 5.7

Fixed

  • lower_bound, upper_bound, and binary_search failed to compile for certain types.
  • Fixed issue where transform_iterator would not compile with __device__-only operators.

Changed

  • Updated docs directory structure to match the standard of rocm-docs-core.
  • Removed references to and workarounds for deprecated hcc

rocThrust 2.17.0 for ROCm 5.5

Added

  • Updated to match upstream Thrust 1.17.2

Changed

  • partition_copy now uses the new rocprim::partition_two_way for increased performance.

Fixed

  • set_difference and set_intersection no longer hang if the number of items is above UINT_MAX. Previously, the unit tests for set_difference and set_intersection failed the TestSetDifferenceWithBigIndexes.

rocThrust 2.16.0 for ROCm 5.3

Added

  • Updated to match upstream Thrust 1.16.0

Changed

  • rocThrust functionality dependent on device malloc works is functional as ROCm 5.2 reneabled device malloc. Device launched thrust::sort and thrust::sort_by_key are available for use.

rocThrust 2.15.0 for ROCm 5.2

Added

  • Packages for tests and benchmark executable on all supported OSes using CPack.

Known issues

  • async_copy, partition, and stable_sort_by_key unit tests are failing on HIP on Windows.

rocThrust 2.14.0 for ROCm 5.1

Added

  • Updated to match upstream Thrust 1.15.0

Known issues

  • async_copy, partition, and stable_sort_by_key unit tests are failing on HIP on Windows.

rocThrust 2.13.0 for ROCm 5.0

  • Updated to match upstream Thrust 1.13.0
  • Updated to match upstream Thrust 1.14.0
  • Added async scan

Changed

  • Scan algorithms: inclusive_scan now uses the input-type as accumulator-type, exclusive_scan uses initial-value-type.
    • This particularly changes behaviour of small-size input types with large-size output types (e.g. short input, int output).
    • And low-res input with high-res output (e.g. float input, double output)

rocThrust-2.11.2 for ROCm 4.5.0

Added

  • Initial HIP on Windows support. See README for instructions on how to build and install.

Changed

  • Packaging changed to a development package (called rocthrust-dev for .deb packages, and rocthrust-devel for .rpm packages). As rocThrust is a header-only library, there is no runtime package. To aid in the transition, the development package sets the "provides" field to provide the package rocthrust, so that existing packages depending on rocthrust can continue to work. This provides feature is introduced as a deprecated feature and will be removed in a future ROCm release.

Known issues

  • async_copy, partition, and stable_sort_by_key unit tests are failing on HIP on Windows.
  • Mixed type exclusive scan algorithm still not using the initial value type for results type.

[rocThrust-2.11.1 for ROCm 4.4.0]

Added

  • gfx1030 support
  • Address Sanitizer build option

Fixed

  • async_transform unit test failure fixed.

[rocThrust-2.11.0 for ROCm 4.3.0]

Added

  • Updated to match upstream Thrust 1.11
  • gfx90a support added
  • gfx803 support re-enabled

[rocThrust-2.10.9 for ROCm 4.2.0]

Added

  • Updated to match upstream Thrust 1.10

Changed

  • Minimum cmake version required for building rocThrust is now 3.10.2

Fixed

  • Size zero inputs are now properly handled with newer ROCm builds that no longer allow zero-size kernel grid/block dimensions
  • Warning of unused results fixed.

[rocThrust-2.10.8 for ROCm 4.1.0]

Added

  • No new features

[rocThrust-2.10.7 for ROCm 4.0.0]

Added

  • Updated to upstream Thrust 1.10.0
  • Implemented runtime error for unsupported algorithms and disabled respective tests.
  • Updated CMake to use downloaded rocPRIM.

[rocThrust-2.10.6 for ROCm 3.10]

Added

  • Added copy_if on device test case

Known issues

  • ROCm support for device malloc has been disabled. As a result, rocThrust functionality dependent on device malloc does not work. Please avoid using device launched thrust::sort and thrust::sort_by_key. Host launched functionality is not impacted. A partial enablement of device malloc is possible by setting HIP_ENABLE_DEVICE_MALLOC to 1. Thrust::sort and thrust::sort_by_key may work on certain input sizes but is not recommended for production code.

[rocThrust-2.10.5 for ROCm 3.9.0]

Added

  • Updated to upstream Thrust 1.9.8
  • New test cases for device-side algorithms

Fixes

  • Bugfix for binary search
  • Implemented workarounds for hipStreamDefault hang

Known issues

  • ROCm support for device malloc has been disabled. As a result, rocThrust functionality dependent on device malloc does not work. Please avoid using device launched thrust::sort and thrust::sort_by_key. Host launched functionality is not impacted. A partial enablement of device malloc is possible by setting HIP_ENABLE_DEVICE_MALLOC to 1. Thrust::sort and thrust::sort_by_key may work on certain input sizes but is not recommended for production code.

[rocThrust-2.10.4 for ROCm 3.8.0]

Added

  • No new features

Known issues

  • ROCm support for device malloc has been disabled. As a result, rocThrust functionality dependent on device malloc does not work. Please avoid using device launched thrust::sort and thrust::sort_by_key. Host launched functionality is not impacted. A partial enablement of device malloc is possible by setting HIP_ENABLE_DEVICE_MALLOC to 1. Thrust::sort and thrust::sort_by_key may work on certain input sizes but is not recommended for production code.

[rocThrust-2.10.3 for ROCm 3.7.0]

Added

  • Updated to upstream Thrust 1.9.4

Changed

  • Package dependecy change to rocprim only

Known issues

  • ROCm support for device malloc has been disabled. As a result, rocThrust functionality dependent on device malloc does not work. Please avoid using device launched thrust::sort and thrust::sort_by_key. Host launched functionality is not impacted. A partial enablement of device malloc is possible by setting HIP_ENABLE_DEVICE_MALLOC to 1. Thrust::sort and thrust::sort_by_key may work on certain input sizes but is not recommended for production code.

[rocThrust-2.10.2 for ROCm 3.6.0]

Added

  • No new features

Known Issues

  • ROCm support for device malloc has been disabled. As a result, rocThrust functionality dependent on device malloc does not work. Please avoid using device launched thrust::sort and thrust::sort_by_key. Host launched functionality is not impacted. A partial enablement of device malloc is possible by setting HIP_ENABLE_DEVICE_MALLOC to 1. Thrust::sort and thrust::sort_by_key may work on certain input sizes but is not recommended for production code.

[rocThrust-2.10.1 for ROCm 3.5.0]

Added

  • Improved tests with fixed and random seeds for test data

Changed

  • CMake searches for rocThrust locally first; downloads from github if local search fails

Deprecated

  • HCC build deprecated