[Mesa-users] llvmpipe os mesa with my own llvm
Burlen Loring
burlen.loring at gmail.com
Tue May 21 15:43:39 PDT 2013
I have recently built and installed llvmpipe os mesa using my own llvm
build on a new server. Using my regression tests I've observed that
varying LP_NUM_THREADS has no affect on performance with this build, but
it had a dramatic affect on my workstation (60 sec w/ 1 thread down to
11 sec w/16 threads). The threading performance should be even better
on the new server since it has vastly better cpu's each with 8 physical
cores vs the old 4 core cpus on my workstation. Also comparing outputs
of run on my workstation and the server this pixels are ~40% different,
but the result looks pretty close to the eye.
I'm wondering what can explain the pixel difference and also the
performance difference? Could it be that I'm not really using the
llvmpipe driver? or llvm JIT compilation for my shaders? I am sure
lvvmpipe and osmesa tracker is built and installed but I'm at a loss has
to debug further. setting GALLIUM_PRINT_OPTIONS does nothing. Any advice
greatly appreciated.
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