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Update README.md for "required setting".

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Jacob He 2018-06-08 11:02:08 +08:00
parent 3dc02dd3cc
commit 92feeffa70
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README.md
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@ -203,9 +203,10 @@ Driver "modesetting"
```
### Required Settings
On the AMDGPU upstream driver stack, the max number of command streams per submission **MUST** be limited to 4 (the default setting in AMD Open Source driver for Vulkan is 16). This can be accomplished via the [Runtime Settings](#runtime-settings) mechanism by adding the following line to /etc/amd/amdPalSettings.cfg:
On the AMDGPU upstream driver stack with libdrm version lower than 2.4.92, the max number of IB per submission **MUST** be limited to 4 (the default setting in AMD Open Source driver for Vulkan is 16). This can be accomplished via the [Runtime Settings](#runtime-settings) mechanism by adding the following line to /etc/amd/amdPalSettings.cfg:
```
MaxNumCmdStreamsPerSubmit,4
CommandBufferCombineDePreambles,1
```
## Runtime Settings