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Re: SDF versus SPEF
Hi, shelby.
What algorithm does the delay calculator of commercial tool like Astro of Synopsys use for net delay? Is it just Elmore?
I used Astro for timing report before routing. But found the delay number different from that obtained with Elmore and R and C's in SPEF...
I think this question may be more suitable for this board.
I'm a beginner user of Astro. Just after placement, I outputed timing report, and also exported SPEF file. I found an interesting problem regarding the interconnect delay calculation, i.e. for a simple one-sink net, the delay is not...
I'm a beginner user of Astro. Just after placement, I outputed timing report, and also exported SPEF file. I found an interesting problem regarding the interconnect delay calculation, i.e. for a simple one-sink net, the delay is not calculated with the Elmore algorithm! Below I attach the net...
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