[Mesa-dev] [PATCH] radeonsi/compute: Add Sea Islands support

Jay Cornwall jay at jcornwall.me
Wed Oct 23 16:47:30 CEST 2013


On 2013-10-22 21:05, Tom Stellard wrote:

> ---
>  src/gallium/drivers/radeonsi/radeonsi_compute.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
> 
[..]
> +		si_pm4_set_reg(pm4, R_00B82C_COMPUTE_MAX_WAVE_ID,
> +						0x190 /* Default value */);

Is there any visible effect on performance if this is set very low?

If there is, perhaps we should compute this value for SI. I think all 
the necessary parameters are provided by DRM (MAX_SE * MAX_SH_PER_SE * 
MAX_PIPES * 40 wavefronts per CU, off the top of my head).

-- 
Jay Cornwall


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