This helps avoid out of memory errors for complex scenes, and improves
performance for smaller scenes with more memory available for states.
Metal already had logic like this, now the logic is centralized and can
be used for all GPU backends.
The parameters have been somewhat tuned per device, based on earlier
work for oneAPI in #163437 and CUDA in #163532. For Metal the behavior
should remain basically the same.
For oneAPI, this enables free_memory queries on iGPUs, as driver have
been exposing this for some time.
Co-authored-by: Patrick Mours <pmours@nvidia.com>
Co-authored-by; Xavier Hallade <xavier.hallade@intel.com>
Pull Request: https://projects.blender.org/blender/blender/pulls/163930
Delay device side reallocation of image_info until load_image_info(),
and add DeviceQueue function to do this on the queue. This will allow
multiple GPU devices asynchronously update their image_info so that
one GPU does not have to stop kernel execution while another GPU
allocates a new image tile.
Pull Request: https://projects.blender.org/blender/blender/pulls/154913
This PR adds Vulkan/oneAPI graphics interop to Cycles. Just like for
CUDA and HIP interop, persistent memory mapping is used, as there could
potentially be some overhead of continuously mapping/unmapping buffers.
Pull Request: https://projects.blender.org/blender/blender/pulls/144442
The performance of the sorted_paths_array kernel on B570 is problematic.
Relying on local sorting+partitioning instead gives a 25% overall rendering
speedup and no regression in shade_surface when rendering Agent 327 Barbershop scene.
On Arc A770, it still gives a 2% speedup when rendering Barbershop.
Pull Request: https://projects.blender.org/blender/blender/pulls/140308
* Use .empty() and .data()
* Use nullptr instead of 0
* No else after return
* Simple class member initialization
* Add override for virtual methods
* Include C++ instead of C headers
* Remove some unused includes
* Use default constructors
* Always use braces
* Consistent names in definition and declaration
* Change typedef to using
Pull Request: https://projects.blender.org/blender/blender/pulls/132361
This patch tunes the integrator state sizing for Metal (`num_concurrent_states` and `num_concurrent_busy_states`).
On all GPUs architecture, we adjust the busy:total states ratio to be 1:4 which gives better rendering performance than the previous 1:16 ratio (independent of total state count). This gives a small performance uplift (e.g. 2-3% on M1 Ultra).
Additionally for M2 architectures, we double the overall state size if there is available headroom. Inclusive of the first change, we can expect uplift of close to 10% in future, as this results in larger dispatch sizes and minimises work submission overheads. In order to make an accurate determination of available headroom, we defer the calculation of `num_concurrent_states` and `num_concurrent_busy_states` until the time of integrator state allocation (i.e. after all of the scene data has been allocated). We also refactor `alloc_integrator_soa` to calculate an *exact* single-state-size in a first pass, right before allocating the integrator SoA buffers in a second pass.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D16313
This is a minimal set of changes, allowing a lot of cleanup that can
happen afterward as it allows sycl method and objects to be used outside
of kernel.cpp.
Reviewed By: brecht, sergey
Differential Revision: https://developer.blender.org/D15397
This patch adds a new Cycles device with similar functionality to the
existing GPU devices. Kernel compilation and runtime interaction happen
via oneAPI DPC++ compiler and SYCL API.
This implementation is primarly focusing on Intel® Arc™ GPUs and other
future Intel GPUs. The first supported drivers are 101.1660 on Windows
and 22.10.22597 on Linux.
The necessary tools for compilation are:
- A SYCL compiler such as oneAPI DPC++ compiler or
https://github.com/intel/llvm
- Intel® oneAPI Level Zero which is used for low level device queries:
https://github.com/oneapi-src/level-zero
- To optionally generate prebuilt graphics binaries: Intel® Graphics
Compiler All are included in Linux precompiled libraries on svn:
https://svn.blender.org/svnroot/bf-blender/trunk/lib The same goes for
Windows precompiled binaries but for the graphics compiler, available
as "Intel® Graphics Offline Compiler for OpenCL™ Code" from
https://www.intel.com/content/www/us/en/developer/articles/tool/oneapi-standalone-components.html,
for which path can be set as OCLOC_INSTALL_DIR.
Being based on the open SYCL standard, this implementation could also be
extended to run on other compatible non-Intel hardware in the future.
Reviewed By: sergey, brecht
Differential Revision: https://developer.blender.org/D15254
Co-authored-by: Nikita Sirgienko <nikita.sirgienko@intel.com>
Co-authored-by: Stefan Werner <stefan.werner@intel.com>
