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OpenCL

barno
Journeyman III

Detailed OpenCL capabilities of AMD GPUs

Originally posted by: barno
Originally posted by: himanshu.gautam

 

Well I guess those infos are available through clInfo.



 

Using that I can only get the specs for the GPU in my system or am I missing something?

 

 

anyone?

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himanshu_gautam
Grandmaster

Detailed OpenCL capabilities of AMD GPUs

barno,

What parameters are you interested in. I think all important parameters are listed in Appendix D, or can be calculated from those paramenters.

Any particular device you are interested in?

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barno
Journeyman III

Detailed OpenCL capabilities of AMD GPUs

Originally posted by: himanshu.gautam barno,

 

What parameters are you interested in. I think all important parameters are listed in Appendix D, or can be calculated from those paramenters.

 

Any particular device you are interested in?

 

Parameters: for now mostly CL_DEVICE_MAX_MEM_ALLOC_SIZE and if the card is able to concurrently run several kernels.

Devices: HD5970, HD6970 and HD6990

 

Thanks!

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himanshu_gautam
Grandmaster

Detailed OpenCL capabilities of AMD GPUs

This parameter is not a constant hardware feature. It returns 256MB for my HD5770 and (i guess) it is currently set to 25% of total available memory. A lot of people complain about this limit and AMD may/maynot increase this limit in future.

Edit: I do not have any of those GPUs, so maybe others can help with current value of these paramenters.

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aheirich
Staff
Staff

Detailed OpenCL capabilities of AMD GPUs

At the present time the SDK does not support task-parallelism, ie. running different kernels simultaneously.

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