[Bug 103697] [regression] shared memory size 64k -> 32k?

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Nov 13 15:33:59 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=103697

--- Comment #2 from O Heid <oliver.heid at h-next.de> ---
I checked back with AMD and they say that there is hardware support for 64kB
shared memory. This actually gets exposed in OpenCL and ROCm/HC.
The 2016 AMD GCN3 manual wrongly states it is only 32kB, but the AMD Vega ISA
reference guide has the correct 64kB LDS size.
So it seems the restriction is due to the mesa software stack, not due to
hardware. Could you please raise the bar back to 64kB? I wouldn't ask if it
wouldn't hit me with with a 2x performance penalty...

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20171113/c0d69f00/attachment-0001.html>


More information about the dri-devel mailing list