Environment variables#
The following table lists the most often used environment variables.
Environment variable |
Possible values |
Description |
---|---|---|
HSA_ENABLE_SDMA |
|
This controls the use of DMA engines in all copy directions (Host-to-Device, Device-to-Host, Device-to-Device) when using the
|
HSA_ENABLE_PEER_SDMA |
|
This controls the use of DMA engines for Device-to-Device copies when using the |
Note
The value of HSA_ENABLE_PEER_SDMA
is ignored if HSA_ENABLE_SDMA
is used to disable the use of DMA engines.