EnableSgprFlatScratchInit is not supported

[Yzgll]

Hello Professor Sun, I've encountered some issues related to registers recently. It seems to be due to the fact that I am loading eight 16-byte plaintext blocks for encryption within one thread. How should I modify the system to support these register configurations?

[syifan]

A quick way is to somehow modify your OpenCL code to prevent the compiler from using the flatscratch registers.

A better way is to add support for the register. The related code is there https://github.com/sarchlab/mgpusim/blob/v4/amd/emu/wavefront.go#L104.

Also, I noticed that the EnableSgptPrivateSegmentWaveByteOffset is used, which is not supported by MGPUSim. I am not sure how that field is used. Is it possible to search for related documentation and let me know how that works?

[Yzgll]

The relevant code seems to be here.
https://github.com/sarchlab/mgpusim/blob/v4/amd/timing/cu/scratchpadpreparer.go#L691
Do you mean MGPUSIM does not support EnableSgptPrivateSegmentWaveByteOffset and cannot add code to support it?The use of this field should be caused by the excessive data overflow that I stored in my private memory
I saw something about Scratch here.
https://www.amd.com/content/dam/amd/en/documents/radeon-tech-docs/instruction-set-architectures/rdna4-instruction-set-architecture.pdf