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OpenCL

skanur
Journeyman III

Determining actual size of load store memory

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Hello,

I own a AMD Kaveri A10-7850K APU. I'm trying to find the size of the local data store (LDS). I tried clinfo and obtained 32KB of local memory. However I know from the data sheet that AMD Kaveri belongs to GCN 1.1 architecture and APU based on this architecture has 64 KB LDS. Could somebody explain the reason for the discrepancy?

Please do consider me as a newbie in both opencl & AMD GPU architectures

Thanks a lot in advance !!

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dipak
Staff
Staff

Re: Determining actual size of load store memory

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Hi,

Yes, you are right. In GCN, the total local memory size/CU is 64KB. But, only 32 KB can be allocated per work-group. So IMO, the clinfo may be showing that number [need to check with some concern person].

Regards,

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2 Replies
dipak
Staff
Staff

Re: Determining actual size of load store memory

Jump to solution

Hi,

Yes, you are right. In GCN, the total local memory size/CU is 64KB. But, only 32 KB can be allocated per work-group. So IMO, the clinfo may be showing that number [need to check with some concern person].

Regards,

View solution in original post

skanur
Journeyman III

Re: Determining actual size of load store memory

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Thanks!!

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