在Ubuntu20.04上用Radeon R7 M445安装R7

Question

我刚刚完成了Ubuntu20.04的新安装，并尝试在AMD R7 M445上安装用于GPU计算的GPU。我需要它来使用tensorflow的GPU功能。我遵循本教程:安装AMD ROCm - ROCm文档1.0.0文档。不确定ROCm是否支持这个GPU，因为我在几个地方看到了不同的地方。

ROCm版本为3.7.0-20.

Linux内核版本为5.4.0-42-泛型.

当运行命令sudo apt install rocm-dkms时，终端上的输出是：

Secure Boot not enabled on this system. Done. Forcing installation of amdgpu

 

amdgpu.ko: Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/5.4.0-42-generic/updates/dkms/

 

amdttm.ko: Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/5.4.0-42-generic/updates/dkms/

 

amdkcl.ko: Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/5.4.0-42-generic/updates/dkms/

 

amd-sched.ko: Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/5.4.0-42-generic/updates/dkms/

 

depmod....

 

Backing up initrd.img-5.4.0-42-generic to /boot/initrd.img-5.4.0-42-generic.old-dkms Making new initrd.img-5.4.0-42-generic (If next boot fails, revert to initrd.img-5.4.0-42-generic.old-dkms image) update-initramfs......

 

DKMS: install completed.

运行opt/rocm/bin/rocminfo时得到的输出是：

ROCk module is loaded
Able to open /dev/kfd read-write
=====================    
HSA System Attributes    
=====================    
Runtime Version:         1.1
System Timestamp Freq.:  1000.000000MHz
Sig. Max Wait Duration:  18446744073709551615 (0xFFFFFFFFFFFFFFFF) (timestamp count)
Machine Model:           LARGE                              
System Endianness:       LITTLE                             

 

==========               
HSA Agents               
==========               
*******                  
Agent 1                  
*******                  
  Name:                    Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
  Uuid:                    CPU-XX                             
  Marketing Name:          Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
  Vendor Name:             CPU                                
  Feature:                 None specified                     
  Profile:                 FULL_PROFILE                       
  Float Round Mode:        NEAR                               
  Max Queue Number:        0(0x0)                             
  Queue Min Size:          0(0x0)                             
  Queue Max Size:          0(0x0)                             
  Queue Type:              MULTI                              
  Node:                    0                                  
  Device Type:             CPU                                
  Cache Info:              
    L1:                      32768(0x8000) KB                   
  Chip ID:                 0(0x0)                             
  Cacheline Size:          64(0x40)                           
  Max Clock Freq. (MHz):   3500                               
  BDFID:                   0                                  
  Internal Node ID:        0                                  
  Compute Unit:            4                                  
  SIMDs per CU:            0                                  
  Shader Engines:          0                                  
  Shader Arrs. per Eng.:   0                                  
  WatchPts on Addr. Ranges:1                                  
  Features:                None
  Pool Info:               
    Pool 1                   
      Segment:                 GLOBAL; FLAGS: KERNARG, FINE GRAINED
      Size:                    16294032(0xf8a090) KB              
      Allocatable:             TRUE                               
      Alloc Granule:           4KB                                
      Alloc Alignment:         4KB                                
      Accessible by all:       TRUE                               
    Pool 2                   
      Segment:                 GLOBAL; FLAGS: COARSE GRAINED      
      Size:                    16294032(0xf8a090) KB              
      Allocatable:             TRUE                               
      Alloc Granule:           4KB                                
      Alloc Alignment:         4KB                                
      Accessible by all:       TRUE                               
  ISA Info:                
    N/A                      
*** Done ***     

对于/opt/rocm/opencl/bin/clinfo，我得到：

Number of platforms:                 1
  Platform Profile:                 FULL_PROFILE
  Platform Version:                 OpenCL 2.0 AMD-APP (3182.0)
  Platform Name:                 AMD Accelerated Parallel Processing
  Platform Vendor:                 Advanced Micro Devices, Inc.
  Platform Extensions:                 cl_khr_icd cl_amd_event_callback


  Platform Name:                 AMD Accelerated Parallel Processing
Number of devices:                 0

你知道有什么问题吗？我尝试了很多我在网上看到的东西，并更新了我能想到或找到的所有东西(OpenCL，OpenGL)。GPU安装的驱动程序是"amdgpu“。

Answer 1

同事有类似于dGPU的笔记本电脑，R7 M445 (我认为是M255)，但效果真的很糟糕。它在18.04中甚至无法使用。现在有了20.04，他可以使用它，但它并不比英特尔iGPU好多少。

这是为开放源码AMDGPU (非专业)驱动程序。AMDGPU驱动程序使用16.04.x (x不是最新的)，它确实支持一些OpenCL iirc。

关于ROCm -你运气不好。实际上只支持少数卡--主要是北极星(如RX 580)和桌面织女星(例如Vega 64)。旧卡(如R9 270)根本不受支持。dGPUs不受支持(就像您的M445一样)，它非常混乱。