97 lines
3.9 KiB
Markdown
97 lines
3.9 KiB
Markdown
<!---
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Copyright (C) 2018-2021 Intel Corporation
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SPDX-License-Identifier: MIT
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-->
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# Frequently asked questions
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For OpenCL specific questions,
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see the [OpenCL FAQ](https://github.com/intel/compute-runtime/blob/master/opencl/doc/FAQ.md).
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## OS support
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### Which Linux versions does NEO support?
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NEO should work on any modern Linux distribution (i.e. Ubuntu, Fedora, etc.)
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with default / stock configuration (no kernel patches), assuming the underlying
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kernel's drm subsystem is 4.7 or higher. Newer platforms will require a kernel version
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that provides support for that platform (e.g. Coffee Lake requires kernel 4.14 or higher).
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Our default (most frequent) validation config is currently Ubuntu 22.04 LTS (as of Q3'22).
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There are no plans for proactive enabling and distro adoption except for Ubuntu. We are open to accepting contributions (pull requests) that unblock support.
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### Does NEO support Microsoft Windows?
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Our closed-source driver for Windows is using the same codebase. At this time,
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we do not support compilation of the stack for Windows. It is our long-term
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intention to offer that option.
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### Does NEO support Windows Subsystem for Linux (WSL)?
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See [WSL.md](https://github.com/intel/compute-runtime/blob/master/WSL.md).
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### Why is the feature set different in latest Windows driver vs. latest NEO on github?
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Our Windows release process takes up to several weeks before drivers are available through intel.com
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and/or Windows update. Features available in github will be available on Windows later.
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Note: Older platforms (e.g. Broadwell) are considered to be in maintenance mode for Windows.
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### How can I enable reading debug environment variables on Linux release builds?
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Reading of debug environment variables on Linux release builds can be enabled by specifying
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`NEOReadDebugKeys` environment variable with a value of 1.
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E.g. to rebuild precompiled kernels you need to set both `RebuildPrecompiledKernels`
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and `NEOReadDebugKeys` to a value of 1.
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List of all debug keys can be found [here](https://github.com/intel/compute-runtime/blob/master/shared/source/debug_settings/debug_variables_base.inl).
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## Platform support
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### Which Intel platforms are supported by the driver?
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See [README.md](https://github.com/intel/compute-runtime/blob/master/README.md).
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### How can I check that my specific device is supported by the driver?
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To check support for any device, you can follow these steps:
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1. Go to [Ark]( https://ark.intel.com) and find your Device ID
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1. Check if this Device ID is enumerated in the
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[supported device list](https://github.com/intel/compute-runtime/blob/master/shared/source/dll/devices/devices_base.inl)
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### When will support for platform X be added?
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We will start adding platform support after platform is disclosed by Intel.
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It is our intention to offer full support ahead of platform's market availability.
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## Support that will not be added to the NEO driver
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There is no plan to provide the following features or support in the NEO driver (due to business reasons):
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* non-Intel GPUs
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* platforms older than Gen8 (Broadwell) - please use [Beignet driver](https://github.com/intel/beignet)
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* sharing with OpenGL / EGL on Linux
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## Capabilities
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### How much memory is available to the application?
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Actual available memory should be read from the driver capabilities using the dedicated API. The driver will report available memory depending on the type of graphics device
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(discrete vs. integrated) and operating system as follows:
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* discrete on Linux - 95% of device memory
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* integrated on Linux - 94% of system memory - 450 MB for internal resources
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* discrete on Windows - 98% of device memory
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* integrated on Windows - 94% of system memory - 450 MB for internal resources
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Ignoring these instructions may lead to undefined behavior, including abort.
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## Who are we?
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The Compute Runtime team is part of AXG SCG (Super Compute Group).
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Most of our engineers are located in Poland, United States, and India.
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