( ESNUG 430 Item 3 ) --------------------------------------------- [06/16/04]
From: Jagan Thinakaran <jagan.thinakaran=user domain=st got calm>
Subject: compile_new_optimization Turns On Gain-based Synthesis in DC?
Hi John,
I was going through Design Compiler variable list and I came across this
peculiar variable:
compile_new_optimization = "false"
The following is an excerpt from its Synopsys man page:
"Controls which optimization algorithms Design Compiler uses. When true,
the new optimization algorithms in Design Compiler are turned on. This
switch should be used in conjunction with the set_ultra_optimization
command, which checks out a DC-Ultra license. The new optimization
algorithms leverage a new gain-based delay model that is automatically
derived using library analysis."
I set the variable to "true" and compiled a small design. Can't say I saw
any difference. I was wondering if anyone else has tried it.
- Jagan Thinakaran
STMicroelectronics Asia Pac Pte Ltd.
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