Chris Freehill
c48b858093
Sync with the latest changes from upstream repo Change-Id: I309880f5c7f77c58a8b186db320bbc0f0e634089
35 wiersze
1.1 KiB
ReStructuredText
35 wiersze
1.1 KiB
ReStructuredText
.. meta::
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:description: HSA runtime implementation
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:keywords: ROCR, ROCm, library, tool, runtime
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.. _environment-variables:
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Environment variables
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========================
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The following table lists the most often used environment variables.
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.. list-table:: ROCR environment variables
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:header-rows: 1
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* - Environment variable
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- Possible values
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- Description
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* - HSA_ENABLE_SDMA
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-
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* 0: Disabled
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* 1: Enabled (default)
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- This controls the use of DMA engines in all copy directions (Host-to-Device, Device-to-Host, Device-to-Device) when using the
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``hsa_memory_copy``, ``hsa_amd_memory_fill``, ``hsa_amd_memory_async_copy``, ``hsa_amd_memory_async_copy_on_engine`` APIs
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* - HSA_ENABLE_PEER_SDMA
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-
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* 0: Disabled
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* 1: Enabled (default)
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- This controls the use of DMA engines for Device-to-Device copies when using the ``hsa_memory_copy``, ``hsa_amd_memory_async_copy``, ``hsa_amd_memory_async_copy_on_engine`` APIs
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.. note::
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The value of ``HSA_ENABLE_PEER_SDMA`` is ignored if ``HSA_ENABLE_SDMA`` is used to disable the use of DMA engines.
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