Support for Vivante GC7000XSVX

[gustavsl]

I've compiled the plaidml and plaidml-keras wheels for aarch64 and successfully installed them on my target. It's an Apalis iMX8 with a NXP i.MX8QM SoC that features two Vivante GC7000XSVX GPUs.

Running plaidml-setup:

root@apalis-imx8:~# plaidml-setup

PlaidML Setup (0.0.0.dev0)

Thanks for using PlaidML!

Some Notes:
  * Bugs and other issues: https://github.com/plaidml/plaidml
  * Questions: https://stackoverflow.com/questions/tagged/plaidml
  * Say hello: https://groups.google.com/forum/#!forum/plaidml-dev
  * PlaidML is licensed under the GNU AGPLv3

No supported devices found. Run 'clinfo' and file an issue containing the full output.

clinfo output:

root@apalis-imx8:~/clinfo# ./clinfo
Number of platforms                               1
  Platform Name                                   Vivante OpenCL Platform
  Platform Vendor                                 Vivante Corporation
  Platform Version                                OpenCL 1.2 V6.2.4.p1.150331
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_icd
  Platform Extensions function suffix             viv

  Platform Name                                   Vivante OpenCL Platform
Number of devices                                 2
  Device Name                                     Vivante OpenCL Device GC7000XSVX.6009.0000
  Device Vendor                                   Vivante Corporation
  Device Vendor ID                                0x564956
  Device Version                                  OpenCL 1.2 
  Driver Version                                  OpenCL 1.2 V6.2.4.p1.150331
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Max compute units                               8
  Max clock frequency                             500MHz
  Device Partition                                (core)
    Max number of sub-devices                     0
    Supported partition types                     (n/a)
    Supported affinity domains                    (n/a)
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x1024
  Max work group size                             1024
=== CL_PROGRAM_BUILD_LOG ===
(6:0) : error : syntax error at 'kernel'
  Preferred work group size multiple              <getWGsizes:1238: create kernel : error -45>
  Preferred / native vector sizes                 
    char                                                 4 / 4       
    short                                                4 / 4       
    int                                                  4 / 4       
    long                                                 4 / 4       
    half                                                 0 / 0        (n/a)
    float                                                4 / 4       
    double                                               0 / 0        (n/a)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (n/a)
  Address bits                                    32, Little-Endian
  Global memory size                              268435456 (256MiB)
  Error Correction support                        Yes
  Max memory allocation                           134217728 (128MiB)
  Unified memory for Host and Device              Yes
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       1024 bits (128 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        8192 (8KiB)
  Global Memory cache line size                   64 bytes
  Image support                                   Yes
    Max number of samplers per kernel             16
    Max size for 1D images from buffer            65536 pixels
    Max 1D or 2D image array size                 8192 images
    Max 2D image size                             8192x8192 pixels
    Max 3D image size                             8192x8192x8192 pixels
    Max number of read image args                 128
    Max number of write image args                8
  Local memory type                               Global
  Local memory size                               32768 (32KiB)
  Max number of constant args                     9
  Max constant buffer size                        65536 (64KiB)
  Max size of kernel argument                     1024
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    Yes
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                (n/a)
  Device Extensions                               cl_khr_byte_addressable_store 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_gl_sharing 

  Device Name                                     Vivante OpenCL Device GC7000XSVX.6009.0000
  Device Vendor                                   Vivante Corporation
  Device Vendor ID                                0x564956
  Device Version                                  OpenCL 1.2 
  Driver Version                                  OpenCL 1.2 V6.2.4.p1.150331
  Device OpenCL C Version                         OpenCL C 1.2 
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Linker Available                                Yes
  Max compute units                               8
  Max clock frequency                             500MHz
  Device Partition                                (core)
    Max number of sub-devices                     0
    Supported partition types                     (n/a)
    Supported affinity domains                    (n/a)
  Max work item dimensions                        3
  Max work item sizes                             1024x1024x1024
  Max work group size                             1024
=== CL_PROGRAM_BUILD_LOG ===
(6:0) : error : syntax error at 'kernel'
  Preferred work group size multiple              <getWGsizes:1238: create kernel : error -45>
  Preferred / native vector sizes                 
    char                                                 4 / 4       
    short                                                4 / 4       
    int                                                  4 / 4       
    long                                                 4 / 4       
    half                                                 0 / 0        (n/a)
    float                                                4 / 4       
    double                                               0 / 0        (n/a)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (n/a)
  Address bits                                    32, Little-Endian
  Global memory size                              268435456 (256MiB)
  Error Correction support                        Yes
  Max memory allocation                           134217728 (128MiB)
  Unified memory for Host and Device              Yes
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       1024 bits (128 bytes)
  Global Memory cache type                        Read/Write
  Global Memory cache size                        8192 (8KiB)
  Global Memory cache line size                   64 bytes
  Image support                                   Yes
    Max number of samplers per kernel             16
    Max size for 1D images from buffer            65536 pixels
    Max 1D or 2D image array size                 8192 images
    Max 2D image size                             8192x8192 pixels
    Max 3D image size                             8192x8192x8192 pixels
    Max number of read image args                 128
    Max number of write image args                8
  Local memory type                               Global
  Local memory size                               32768 (32KiB)
  Max number of constant args                     9
  Max constant buffer size                        65536 (64KiB)
  Max size of kernel argument                     1024
  Queue properties                                
    Out-of-order execution                        Yes
    Profiling                                     Yes
  Prefer user sync for interop                    Yes
  Profiling timer resolution                      1000ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
  printf() buffer size                            1048576 (1024KiB)
  Built-in kernels                                (n/a)
  Device Extensions                               cl_khr_byte_addressable_store 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_gl_sharing 

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 [viv]
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (2)
    Platform Name                                 Vivante OpenCL Platform
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (2)
    Platform Name                                 Vivante OpenCL Platform
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000
  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 (2)
    Platform Name                                 Vivante OpenCL Platform
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000
    Device Name                                   Vivante OpenCL Device GC7000XSVX.6009.0000

Any clues on this?

Thanks,

Gustavo.

[earhart]

What you'll want to do is to edit plaidml/configs/experimental.json, and add a configuration for this device. The file's installed under share/plaidml, if you want to edit it in the installed version and then copy your edits back to the source code.

The schema for the hardware configurations is in tile/proto/hal.proto.

If you find a working set of settings, we'd definitely appreciate a PR. :-)