AnsweredAssumed Answered

Drop in fglrx OpenCL performance: 14.12 vs 15.5

Question asked by ribalda on Jun 5, 2015
Latest reply on Mar 10, 2016 by ribalda

Hello, Using the latest linux driver shows a much worse performance for float16 and double16. Is this expected?

 

Meassured with clpeak:

driver_version | 1642.5 (sse2) -> 1702.3 (sse2)

 

float16| 9.96633 -> 1.91836 Mflops

double16| 2.37198 -> 0.640011 Mflops

 

clinfo differences:

SVM capabilities:

- Coarse grain buffer: Yes

- Fine grain buffer: Yes

- Fine grain system: Yes

- Atomics: Yes

+ Coarse grain buffer: No

+ Fine grain buffer: No

+ Fine grain system: No

+ Atomics: No

 

Any pointers will be appreciated. Thanks!

Outcomes