[Debian-med-packaging] Help needed to build libhmsbeagle using OpenCL

[Andreas Tille]

Hi,

I have a totally different question about OpenCL:  Assume I have
successfully built it locally.  When checking the availability of
libhmsbeagle features beast-mcmc (which uses libhmsbeagle) provides a
check which in my case looks like:


$ java -jar /usr/share/beast-mcmc/beast.jar -beagle -beagle_info ...
Using BEAGLE library v2.1.2 for accelerated, parallel likelihood evaluation 2009-2013, BEAGLE Working Group - http://beagle-lib.googlecode.com/
Citation: Ayres et al (2012) Systematic Biology 61: 170-173 | doi:10.1093/sysbio/syr100

BEAGLE resources available:
0 : CPU
    Flags: PRECISION_SINGLE PRECISION_DOUBLE COMPUTATION_SYNCH EIGEN_REAL EIGEN_COMPLEX SCALING_MANUAL SCALING_AUTO SCALING_ALWAYS SCALERS_RAW SCALERS_LOG VECTOR_SSE VECTOR_NONE THREADING_NONE PROCESSOR_CPU FRAMEWORK_CPU

1 : Intel(R) HD Graphics IvyBridge GT1 (OpenCL 1.2 beignet 1.0.3)
    Global memory (MB): 2048
    Clock speed (Ghz): 1,00
    Number of multiprocessors: 6
    Flags: PRECISION_SINGLE COMPUTATION_SYNCH EIGEN_REAL EIGEN_COMPLEX SCALING_MANUAL SCALING_AUTO SCALING_ALWAYS SCALERS_RAW SCALERS_LOG VECTOR_NONE THREADING_NONE PROCESSOR_GPU FRAMEWORK_OPENCL


So the application sees the GPU via libhmsbeagle.

However, a mac user told me that it looks like:

> BEAGLE resources available:
>
> 0 : CPU
>
>     Flags: PRECISION_SINGLE PRECISION_DOUBLE COMPUTATION_SYNCH
> EIGEN_REAL EIGEN_COMPLEX SCALING_MANUAL SCALING_AUTO SCALING_ALWAYS
> SCALERS_RAW SCALERS_LOG VECTOR_SSE VECTOR_NONE THREADING_NONE
> PROCESSOR_CPU FRAMEWORK_CPU
>
> 1 : Intel(R) Core(TM) i5-4258U CPU @ 2.40GHz (OpenCL 1.2 )
>
>     Global memory (MB): 8192
>
>     Clock speed (Ghz): 2,40
>
>     Number of multiprocessors: 4
>
>     Flags: PRECISION_SINGLE PRECISION_DOUBLE COMPUTATION_SYNCH
> EIGEN_REAL EIGEN_COMPLEX SCALING_MANUAL SCALING_AUTO SCALING_ALWAYS
> SCALERS_RAW SCALERS_LOG VECTOR_NONE THREADING_NONE PROCESSOR_CPU
> FRAMEWORK_OPENCL

!!!!

> 2 : Iris (OpenCL 1.2 )
>
>     Global memory (MB): 1536
>
>     Clock speed (Ghz): 1,20
>
>     Number of multiprocessors: 280
>
>     Flags: PRECISION_SINGLE COMPUTATION_SYNCH EIGEN_REAL EIGEN_COMPLEX
> SCALING_MANUAL SCALING_AUTO SCALING_ALWAYS SCALERS_RAW SCALERS_LOG
> VECTOR_NONE THREADING_NONE PROCESSOR_GPU FRAMEWORK_OPENCL

So the way more important point here is the multiprocessor feature which
is actually wanted for beast-mcmc.  Any idea how to activate this?  I'm
afraid this is rather a question for upstream but may be somebody here
has some experience.

Kind regards

      Andreas.

On Wed, Oct 21, 2015 at 03:38:12PM +0100, Ghislain Vaillant wrote:
> >
> >OpenCL error: CL_DEVICE_NOT_FOUND from file <GPUInterfaceOpenCL.cpp>, line 118.
> >FAIL tinytest (exit status: 255)
> 
> The error comes from their GPU interface abstraction. At that point, it may
> be worth asking whether upstream have tested it with POCL. Chances are that
> they did test with Beignet (since it worked on your machine?) but not on
> POCL. It could also well be that POCL v0.10 is insufficient.
> 
> Ghis
> 
> 

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