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Radeon Software 18.20 Preview Offers Early Support For Ubuntu 18.04 LTS & RHEL 7.5

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  • StillStuckOnSI
    replied
    Originally posted by bridgman View Post

    We are calling the older code path "legacy" because we are just starting to replace it with PAL (beginning with Vega in the 18.10 release) and needed a name for it since we now had more than one option. That said, I believe it is what we are using for everything up to Polaris right now.

    I don't know what the timeline is for enabling PAL in earlier GPUs (it supports everything back to SI AFAIK) but I'll ask if it is worth installing on SI with the PAL option selected to see if/how it works. In a lot of cases the main obstacle to switching code paths quickly is more about the testing/tuning/certification effort than about "making it run".
    Thanks for the quick reply! I've attempted to compile and run some basic OpenCL kernels on the legacy implementation, but last I checked it required some rather bizarre workarounds to make a simple vecadd kernel function on SI. Do you know if there is a forum for raising OpenCL-related bugs?

    Leave a comment:


  • bridgman
    replied
    Originally posted by StillStuckOnSI View Post
    At the end of the day, GCN 1.0 cards were just in the wrong place at the wrong time with OpenCL. AMD has given technical arguments as to why SI can't simply be supported in ROCM, and the legacy compute implementation in the new proprietary driver seems to be just that--legacy. Unfortunate for sure, but certainly understandable.
    We are calling the older code path "legacy" because we are just starting to replace it with PAL (beginning with Vega in the 18.10 release) and needed a name for it since we now had more than one option. That said, I believe it is what we are using for everything up to Polaris right now.

    I don't know what the timeline is for enabling PAL in earlier GPUs (it supports everything back to SI AFAIK) but I'll ask if it is worth installing on SI with the PAL option selected to see if/how it works. In a lot of cases the main obstacle to switching code paths quickly is more about the testing/tuning/certification effort than about "making it run".

    Leave a comment:


  • StillStuckOnSI
    replied
    Originally posted by tildearrow View Post

    So, if they add closed-source support to that card, are you gonna buy a recent AMD card (e.g. RX 480) and quit using the older one (thereby throwing their efforts to waste (unless somebody else has that card))?
    As someone still in possession of a GCN 1.0 GPU, the biggest missing piece not provided by the open source drivers is modern compute (aka OpenCL >= 1.2). fglrx used to provide this, but the (very welcome!) push towards unifying under amdgpu has left SI cards high-and-dry, so to speak, with regards to said compute features. Short of buying a new GPU, the only options are to downgrade to a 3.x series kernel or run Windows.

    At the end of the day, GCN 1.0 cards were just in the wrong place at the wrong time with OpenCL. AMD has given technical arguments as to why SI can't simply be supported in ROCM, and the legacy compute implementation in the new proprietary driver seems to be just that--legacy. Unfortunate for sure, but certainly understandable.

    Leave a comment:


  • dungeon
    replied
    Originally posted by PackRat View Post

    Amd makes Etherium drivers but I can't get a driver that works with the proprietary applications Autodeskmaya and Sidefx houdini for Linux. I'm using windows because the drivers works there.
    AFAIK these apps runs profiles usually, tell AMD exact versions and names of the apps so they might do something about these if that is missing

    When it comes to certifcations, as i see here for Maya 2018.3 Windows is there marked as Tested (not Certified) for Radeon R9 280/X with Crimson Edition 16.6.2 (nearly 2 years old driver for a new version of Maya sounds like a copy/paste to me ) with all APIs:

    https://knowledge.autodesk.com/sites...ox2018_v03.pdf

    While for Linux only AMD workstation cards are there, so not sure... maybe AMD only supports workstation cards on Maya for Linux or they just do certifications for workstation cards for Linux, but not Testing of consumer cards
    Last edited by dungeon; 04 May 2018, 05:35 PM.

    Leave a comment:


  • Marc Driftmeyer
    replied
    Running the OpenCL stack from the preview on Debian Sid using the 4.15.0-1 Kernel and all is well. Blender chewing out mixed CPU/GPGPU renders from master on 2.79.x and 2.80.x.Platform Name AMD Accelerated Parallel Processing
    Number of devices 1
    Device Name Ellesmere
    Device Vendor Advanced Micro Devices, Inc.
    Device Vendor ID 0x1002
    Device Version OpenCL 1.2 AMD-APP (2633.3)
    Driver Version 2633.3
    Device OpenCL C Version OpenCL C 1.2
    Device Type GPU
    Device Board Name (AMD) AMD Radeon (TM) RX 480 Graphics
    Device Topology (AMD) PCI-E, 01:00.0
    Device Profile FULL_PROFILE
    Device Available Yes
    Compiler Available Yes
    Linker Available Yes
    Max compute units 36
    SIMD per compute unit (AMD) 4
    SIMD width (AMD) 16
    SIMD instruction width (AMD) 1
    Max clock frequency 1338MHz
    Graphics IP (AMD) 8.0
    Device Partition (core)
    Max number of sub-devices 36
    Supported partition types none specified
    Max work item dimensions 3
    Max work item sizes 1024x1024x1024
    Max work group size 256
    Preferred work group size (AMD) 256
    Max work group size (AMD) 1024
    Preferred work group size multiple 64
    Wavefront width (AMD) 64
    Preferred / native vector sizes
    char 4 / 4
    short 2 / 2
    int 1 / 1
    long 1 / 1
    half 1 / 1 (cl_khr_fp16)
    float 1 / 1
    double 1 / 1 (cl_khr_fp64)
    Half-precision Floating-point support (cl_khr_fp16)
    Denormals No
    Infinity and NANs No
    Round to nearest No
    Round to zero No
    Round to infinity No
    IEEE754-2008 fused multiply-add No
    Support is emulated in software No
    Single-precision Floating-point support (core)
    Denormals No
    Infinity and NANs Yes
    Round to nearest Yes
    Round to zero Yes
    Round to infinity Yes
    IEEE754-2008 fused multiply-add Yes
    Support is emulated in software No
    Correctly-rounded divide and sqrt operations Yes
    Double-precision Floating-point support (cl_khr_fp64)
    Denormals Yes
    Infinity and NANs Yes
    Round to nearest Yes
    Round to zero Yes
    Round to infinity Yes
    IEEE754-2008 fused multiply-add Yes
    Support is emulated in software No
    Address bits 64, Little-Endian
    Global memory size 8331276288 (7.759GiB)
    Global free memory (AMD) 8112396 (7.737GiB)
    Global memory channels (AMD) 8
    Global memory banks per channel (AMD) 16
    Global memory bank width (AMD) 256 bytes
    Error Correction support No
    Max memory allocation 4244635648 (3.953GiB)
    Unified memory for Host and Device No
    Minimum alignment for any data type 128 bytes
    Alignment of base address 2048 bits (256 bytes)
    Global Memory cache type Read/Write
    Global Memory cache size 16384 (16KiB)
    Global Memory cache line size 64 bytes
    Image support Yes
    Max number of samplers per kernel 16
    Max size for 1D images from buffer 134217728 pixels
    Max 1D or 2D image array size 2048 images
    Base address alignment for 2D image buffers 256 bytes
    Pitch alignment for 2D image buffers 256 pixels
    Max 2D image size 16384x16384 pixels
    Max 3D image size 2048x2048x2048 pixels
    Max number of read image args 128
    Max number of write image args 8
    Local memory type Local
    Local memory size 32768 (32KiB)
    Local memory syze per CU (AMD) 65536 (64KiB)
    Local memory banks (AMD) 32
    Max number of constant args 8
    Max constant buffer size 4244635648 (3.953GiB)
    Preferred constant buffer size (AMD) 16384 (16KiB)
    Max size of kernel argument 1024
    Queue properties
    Out-of-order execution No
    Profiling Yes
    Prefer user sync for interop Yes
    Profiling timer resolution 1ns
    Profiling timer offset since Epoch (AMD) 1525466316024086734ns (Fri May 4 13:38:36 2018)
    Execution capabilities
    Run OpenCL kernels Yes
    Run native kernels No
    Thread trace supported (AMD) Yes
    Number of async queues (AMD) 2
    Max real-time compute queues (AMD) 0
    Max real-time compute units (AMD) 0
    SPIR versions 1.2
    printf() buffer size 4194304 (4MiB)
    Built-in kernels
    Device Extensions cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_gl_sharing cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_spir cl_khr_gl_event

    NULL platform behavior
    clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) No platform
    clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) No platform
    clCreateContext(NULL, ...) [default] No platform
    clCreateContext(NULL, ...) [other] Success [MESA]
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
    Platform Name Clover
    Device Name AMD Radeon (TM) RX 480 Graphics (POLARIS10 / DRM 3.23.0 / 4.15.0-1-amd64, LLVM 6.0.0)
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
    Platform Name Clover
    Device Name AMD Radeon (TM) RX 480 Graphics (POLARIS10 / DRM 3.23.0 / 4.15.0-1-amd64, LLVM 6.0.0)
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
    clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
    Platform Name Clover
    Device Name AMD Radeon (TM) RX 480 Graphics (POLARIS10 / DRM 3.23.0 / 4.15.0-1-amd64, LLVM 6.0.0)

    Leave a comment:


  • PackRat
    replied
    Originally posted by tildearrow View Post

    So, if they add closed-source support to that card, are you gonna buy a recent AMD card (e.g. RX 480) and quit using the older one (thereby throwing their efforts to waste (unless somebody else has that card))?
    Amd makes Etherium drivers but I can't get a driver that works with the proprietary applications Autodeskmaya and Sidefx houdini for Linux. I'm using windows because the drivers works there.

    Leave a comment:


  • dungeon
    replied
    Originally posted by twriter View Post

    Also, I checked with our QA folks and RX480 was tested with 100% pass rate across install, base graphics, 3D, and multimedia.
    He mentioned CL, so might be that legacy compute break something.
    Last edited by dungeon; 04 May 2018, 04:47 PM.

    Leave a comment:


  • twriter
    replied
    Originally posted by perpetually high View Post

    Thanks for the response, I'll try and get that done by today
    Also, I checked with our QA folks and RX480 was tested with 100% pass rate across install, base graphics, 3D, and multimedia.

    Leave a comment:


  • perpetually high
    replied
    Originally posted by twriter View Post

    Can you provide some more details about your system so we can try to reproduce? Also, any log files you can provide from the failed boot would be helpful. If you can file a bug report at the freedesktop.org bugzilla (DRM/AMDgpu or DRM/AMDgpu-pro), even better.
    Thanks for the response, I'll try and get that done by today

    Leave a comment:


  • twriter
    replied
    Originally posted by perpetually high View Post
    So this totally borked my system with my RX 480
    Can you provide some more details about your system so we can try to reproduce? Also, any log files you can provide from the failed boot would be helpful. If you can file a bug report at the freedesktop.org bugzilla (DRM/AMDgpu or DRM/AMDgpu-pro), even better.

    Leave a comment:

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