BabelStream tested, bandwidth OK, validation fails

[pfoof]

I don't know how to contribute to GitHub wiki, so just reporting in results from https://github.com/UoB-HPC/BabelStream

Triad works with --float, no error is reported, keep array size small (max tested Array: 2048000 Iters: 12 Bandwidth (GB/s): 0.037)

For all tests validation fails, but the speeds are reported:

Validation failed on sum. Error 75.5013
Sum was 150.991104125977 but should be 226.492431640625
Function    MBytes/sec  Min (sec)   Max         Average     
Copy        14.707      0.03481     0.03481     0.03481     
Mul         26.906      0.01903     0.01903     0.01903     
Add         39.416      0.01948     0.01948     0.01948     
Triad       39.135      0.01962     0.01962     0.01962     
Dot         79.948      0.00640     0.00640     0.00640

[doe300]

Thanks for the report. I will have a look at the error and add the results to the wiki when I have some time.

What as the exact command that you used to run the test?

[pfoof]

sudo ./ocl-stream --float -n 12 --arraysize 640000