[Mesa-users] llvmpipe os mesa with my own llvm

[Burlen Loring]

On 5/22/2013 9:02 AM, Brian Paul wrote:
> On 05/21/2013 04:43 PM, Burlen Loring wrote:
>> 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.
>
> As a first step you can call/print glGetString(GL_RENDERER) to verify 
> that you're using llvmpipe.  I'm assuming this is your own app.
>
> -Brian
>

OK so far so good

1010: GL_VENDOR: VMware, Inc.
1010: GL_VERSION: 2.1 Mesa 9.2.0 (git-1e88d14)
1010: GL_RENDERER: Gallium 0.4 on llvmpipe (LLVM 3.2, 256 bits)




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