[Data Streaming Accelerator] cr_delta opcode fails on EMR/GNR but works on SPR - is it unsupported?

[Minho]

Hi,

I’m currently working on a system that leverages Intel DSA’s `cr_delta` operation.

I’ve observed the following behavior across different generations:

- On **Sapphire Rapids (SPR)**: the `cr_delta` operation works as expected.
- On **Emerald Rapids (EMR)** and **Granite Rapids (GNR)**: attempting to use `cr_delta` results in an "unsupported opcode" error (error code `0x10`).

This suggests that the delta-related opcodes may no longer be supported in EMR/GNR.

However, I couldn’t find any documentation explicitly stating whether these instructions have been deprecated or disabled in newer microarchitectures.

Could anyone clarify:
- Whether `cr_delta` and other delta-related operations are officially supported in EMR/GNR?
- Are there any platform or firmware flags that need to be enabled?

Thanks in advance for your help.

[Poojitha]

Hi Minho,

Thank you for reaching out to the Intel support. We acknowledge receipt of your concern and want to assure you that assisting you is our top priority. To effectively troubleshoot the issue you're facing, we require some additional information from your end.

Could you kindly provide the following details?

1.Kindly share the complete system details

2.Please confirm the processor model

Your prompt response with this information will greatly assist us in diagnosing and resolving the issue as quickly as possible.

We look forward to hearing from you soon.

Best regards,

Poojitha N

Intel Customer Support Technician

[Poojitha]

Hi Minho,

Greetings for the day!

We are following up to check if you were able to find the information we requested. Kindly confirm at your earliest convenience, so that we can continue assisting you in resolving this matter.

We appreciate your understanding!

Regards,

Poojitha

Intel Customer Support Technician

[Poojitha]

Hi Minho,

Greetings for the day!

We are following up to check if you were able to find the information we requested. Kindly confirm at your earliest convenience, so that we can continue assisting you in resolving this matter.

We appreciate your understanding!

Regards,

Poojitha

Intel Customer Support Technician