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liron's avatar
liron
Icon for New Contributor rankNew Contributor
5 years ago

partial reconfiguration RBF file size

Hi,

I'm using the Arria 10 and QUARTUS 19.4.

The rbf size of my full version is 30MB and the persona is 90MB.

How do I affect the size of the persona rbf file?

Thanks

Liron

3 Replies

  • Ash_R_Intel's avatar
    Ash_R_Intel
    Icon for Regular Contributor rankRegular Contributor
    5 years ago

    Hi Liron,


    In general, the sizes for a normal rbf file and a file for partial reconfiguration differ due to this:


    Configuration bitstreams used in a non-PR flow are different than those used in a PR

    flow. In addition to standard data and CRC check bits, configuration bitstreams for

    partial reconfiguration also include instructions that direct the PR control block to

    process the data for partial reconfiguration.


    Further it also depends on the different modes you choose.


    Regards.


    • liron's avatar
      liron
      Icon for New Contributor rankNew Contributor
      5 years ago

      Hi Ash,

      Which modes can I choose?

      I have seen that there is a SCRUB mode, but I can not find where to run it.

      Can you help me with that?

      Thanks,

      • sstrell's avatar
        sstrell
        Icon for Super Contributor rankSuper Contributor
        5 years ago

        The SCRUB mode you're thinking of refers to the old Stratix V flow, not your device.

        In general, for Arria 10, the final bitstream file size and time to reconfigure your design is proportional to PR region height. The easiest thing to do to shrink .rbf file size is to make your PR regions shorter in Y and wider in X. This gets into how the device masks off SRAM bits to not reconfigure parts of the design and the way CRAM bits (configuration RAM) are set.