Occasional ContributorQuestion on AN899 (Reducing Compile Time with Fast Preservation)
My understanding is that Fast Preservation option is for when you want to import the "static" design, but the tool unnecessarily spends time with compiling the static design.
1) In this page of AN899, it says "select the Reserved Core partition Type." Can I set it as "Reconfigurable?"
It seems to be a natural fit for Partial Reconfiguration technology because when the static design is large, it's time-consuming to generate new personas.
I wonder "why is Fast Preserve not Enabled by default for Partial Reconfiguration?"
2) I ran the ANN899 experiment on my machine. The flat compile time on my machine is 20min and the fast reserve version is 8~9 min as shown below.
I think this is still too slow because u_bliking_led_i3 and u_bliking_led_i4 are toal less than 200 ALMs.
The Fitter-Finalize time itself is 2min 44seconds. Is this expected?
Thanks in advance,
DJ
Like I said, if you're not specifically creating a PR design, then you would want to use the Reserved Core option just like the tutorial says. Setting it to Reconfigurable enables additional device features and logic to allow for a runtime partial reconfiguration, which is not necessary. Fast Preservation can be used for either a PR or non-PR design. This training sums it all up pretty well: https://cdrdv2.intel.com/v1/dl/getContent/652891
