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darkbasic wrote:I've an hard time believing that its integrated GPU will be slower than the CPU. Releasing an experimental Intel OpenCL client would be very useful to start optimizing the graphic stack, especially Beignet.
bruce wrote:(A) the development costs of a new capability
bruce wrote:(B) having a class of projects to assign to that hardware class.
bruce wrote:There are no active GPU projects with deadlines long enough for the typical iGPU
Joe_H wrote:As for just whitelisting the current Intel GPU's and later more powerful ones, that is not enough. A separate GPU folding core based on OpenMM using OpenCL would also need to be coded, tested and then released. That is just like there being separate AMD and nVidia GPU folding cores.
Joe_H wrote:As for the open source implementation of OpenCL for the Intel GPU - Beignet, has anyone even got it far enough that the FAHBench program will run on it? If so, what are the performance figures.
Joe_H wrote:Trouble folding and running FAHBench AMD GPU's has also been reported in connection with the open source OpenCL implementation as compared to using the AMD provided one.
$ ./Built/bin/FAHBench-cmd
FAHBench Simulation
-------------------
Plugin directory: "/home/niko/devel/fahbench/Built/lib/openmm"
Work unit: dhfr
WU Name: Dihydrofolate reductase
WU Description: A common system for benchmarking molecular dynamics
System XML: /home/niko/devel/fahbench/Built/share/fahbench/workunits/dhfr/system.xml
Integrator XML: /home/niko/devel/fahbench/Built/share/fahbench/workunits/dhfr/integrator.xml
State XML: /home/niko/devel/fahbench/Built/share/fahbench/workunits/dhfr/state.xml
Step chunk: 40
Device ID 0; Platform OpenCL; Platform ID 0
Run length: 60s
Loading plugins from plugin directory
Number of registered plugins: 3
Deserializing input files: system
Deserializing input files: state
Deserializing input files: integrator
Creating context (may take several minutes)
Checking accuracy against reference code
Creating reference context (may take several minutes)
Comparing forces and energy
Starting Benchmark
Benchmarking finished
Final score: 3.8875
Scaled score: 3.8875 (23558 atoms)
Joe_H wrote:So a scaled score of about 10
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