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Altera_Forum's avatar
Altera_Forum
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10 years ago

Quartus Partition Merge Usage ?? What is the good and bad if turn it off?

Hi,

Anyone knows what is the usage of partition merge in quartus cad flow. From the definition in quartus handbook chapter 3 "quartus ii incremental compilation for hierarchical and team-based design",

"partition merge stage The Partition Merge step creates a single, complete netlist that consists of post-synthesis netlists, post-fit

netlists, and netlists exported from other Quartus II projects, depending on the netlist type that you specify

for each partition."

It seems like it only speed up the fitter process by reuse-ing the previous post-fit netlist. Is that correct? It didn't do any resource sharing during this stage?

Thanks,

OT

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    You are correct. The idea is to have completed sections of the FPGA saved in partitions so that they don't need to be fitted every time the configuration is built. If you have a timing sensitive design partition that has already been verified, that verification doesn't need to be redone.