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命令行查看GPU内存容量

 3 years ago
source link: https://www.lujun9972.win/blog/2018/08/14/%E5%91%BD%E4%BB%A4%E8%A1%8C%E6%9F%A5%E7%9C%8Bgpu%E5%86%85%E5%AD%98%E5%AE%B9%E9%87%8F/index.html
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命令行查看GPU内存容量

有两个命令可以帮助我们查看GPU的内存容量，一个时lspci,一个是lshw

lspci

  1. 查找显卡的设备地址 

    lspci |grep VGA

    00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

    其中 00:02.0 指明了显卡是在哪个总线、哪个插槽上的设备、上的那个功能模块。

  2. 查看详细信息 

    lspci -v -s 00:02.0

    00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
  Subsystem: Lenovo ThinkPad T520
  Flags: bus master, fast devsel, latency 0, IRQ 30
  Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
  Memory at e0000000 (64-bit, prefetchable) [size=256M]
  I/O ports at 5000 [size=64]
  [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
  Capabilities: <access denied>
  Kernel driver in use: i915
  Kernel modules: i915

    你可以看到，GPU可预取只有4M，不可预取内存为256M，果然是个垃圾显卡啊... 

lshw -C display

*-display
     description: VGA compatible controller
     product: 2nd Generation Core Processor Family Integrated Graphics Controller
     vendor: Intel Corporation
     physical id: 2
     bus info: pci@0000:00:02.0
     version: 09
     width: 64 bits
     clock: 33MHz
     capabilities: vga_controller bus_master cap_list rom
     configuration: driver=i915 latency=0
     resources: irq:30 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:5000(size=64) memory:c0000-dffff

可以看到resources中 irq:30 memory:f0000000-f03fffff memory:e0000000-efffffff 前一个容量就是 4M,后一个容量就是 256M


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