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v-m's avatar
v-m
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2 years ago

Memory attributes for device_global

I am migrating IP component from HLS to oneAPI. The component is basic exponential moving average filtering. Implementation has state, which is saved between invocation. In HLS this can be achieved ...
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BoonBengT_Altera's avatar
BoonBengT_Altera
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2 years ago

Hi @v-m,


Thank you for the patients and apologies for the delayed in response.

If understood the situation correctly, you would like to implement the variable in the onchip memory as per the memory attributes.

For that the device_global variable is implmented in the onchip memory already during the hardware implementation.

You may find the details explanation in the section hardware implementation in the link below:

- https://www.intel.com/content/www/us/en/docs/oneapi-fpga-add-on/optimization-guide/2023-2/device-global-ext.html

Please do let us know if situation are misunderstood.


Best Wishes

BB


v-m's avatar
v-m
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2 years ago

Hello


Thank you for your response. Yes, I need to implement the variable in the onchip memory and it can be achieved with device_global. But I am not able to apply any memory attributes to this device_global variable, for example [[intel::fpga_register]], [[intel::singlepump]], etc.
Can you please clarify if applying such attributes is possible in this case?