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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - Performance improvement : Please consider hardware ɢᴘᴜ rendering in llvmpipe"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93686#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTABUG - Performance improvement : Please consider hardware ɢᴘᴜ rendering in llvmpipe"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93686">bug 93686</a>
from <span class="vcard"><a class="email" href="mailto:ytrezq@sdf-eu.org" title="ytrezq@sdf-eu.org">ytrezq@sdf-eu.org</a>
</span></b>
<pre>(In reply to Marek Olšák from <a href="show_bug.cgi?id=93686#c18">comment #18</a>)
<span class="quote">> A fast GPU + slow GPU is also a bad idea. There is the risk of improper load
> balancing resulting in the performance being the same or slightly above the
> slow GPU. Or if it's done badly, it can be well below the slow GPU.</span >
So why mixing a ᴄᴘᴜ and a fast ɢᴘᴜ isn’t a problem in OpenCl ?
<span class="quote">> You are also completely missing the main use case for llvmpipe: to have
> desktop compositing if an OpenGL driver isn't installed or doesn't exist.
> Nobody cares about supercomputers.</span >
llvmpipe is essentially an opersource driver itself (the difference is only not
requiring in‑kernel part). So generally when a modern Linux distro ship
llvmpipe, it also makes sure Opensource drivers (with their kernel modules) for
Nvidia ; Intel ; ᴀᴍᴅ are also installed and loaded.
Hence the LIBGL_ALWAYS_SOFTWARE=1 so widely used on phoronix.com for
benchmarking llvmpipe.</pre>
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