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author | Aaron Watry <[email protected]> | 2017-06-09 12:57:42 -0500 |
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committer | Aaron Watry <[email protected]> | 2017-06-14 19:38:55 -0500 |
commit | e4d06e4c531157f1f3e4683487ee9c81fa0cff9b (patch) | |
tree | daf06dbb73d861d7a14ceafdf43f30ccc16a5601 /src/SConscript | |
parent | b6d56c747cbce7b9ca297be1c6f2c2b7ca91842d (diff) |
radeon/winsys: Limit max allocation size to 70% of VRAM
The CL CTS queries the max allocation size, and then attempts to
allocate buffers of that size. If not enough contiguous RAM/VRAM is
available, this causes errors in the radeon kernel module due to
inability to allocate the required memory.
It's a bit of a hack, but experimentally on my system, I can use ~3/4
of the card's VRAM for a single global/constant buffer allocation given
current GUI/compositor use.
For a 1GB Pitcairn (HD7850) this gets me from the reported clinfo values of:
Global memory size 2143076352 (1.996GiB)
Max memory allocation 1500153446 (1.397GiB)
Max constant buffer size 1500153446 (1.397GiB)
To:
Global memory size 2143076352 (1.996GiB)
Max memory allocation 751619276 (716MiB)
Max constant buffer size 751619276 (716MiB)
Fixes: OpenCL CTS test/conformance/api/min_max_mem_alloc_size,
OpenCL CTS test/conformance/api/min_max_constant_buffer_size
Signed-off-by: Aaron Watry <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/SConscript')
0 files changed, 0 insertions, 0 deletions