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Altera_Forum
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16 years ago

Rapid recompile

Anybody tried the rapid recompile feature in Quartus 9.1? With rapid recompile feature switched on: I took a unpartioned flat design on an 80% full EP4SGX230 Stratix device and ran it through...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Its my understanding the rapid recompile is really for very small design changes away from critical parts of the design, kind of like ECO changes but the code changes are now completely annotated.

Changes should be very minor like a bit flip or one pin change.

I ran some tests yesterday on a DDR2 design, 3 test cases

Minor edit to code (no functional change)

Register logic flip

Pin move

All three resulted in about the same benefits

A&S about 10% faster

Fit about 50% faster

Timing about 20% faster

Assembler about 10% faster