UniPHY DDR3 simulation is slow

If you are getting a message like this from ModelSim:

#  ** Warning: Design size of 31489 statements exceeds ModelSim Altera Starter recommended capacity.
#  Expect performance to be adversely affected.

You should expect the simulation to be slow and the only way around it is to purchase a fully functional version of ModelSim.

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If you are getting a message like this from ModelSim:

#  ** Warning: Design size of 31489 statements exceeds ModelSim Altera Starter recommended capacity.
#  Expect performance to be adversely affected.

You should expect the simulation to be slow and the only way around it is to purchase a fully functional version of ModelSim.

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I am not seeing this or similar messages in the Modelsim transcript. My project is very basic. It contains one instance of the DDR3 IP and I am trying to do a simple write followed by a read. What performance should I expect with the Starter edition of Modelsim?

According to this article at http://www.altera.com/literature/hb/external-memory/emi_debug.pdf, full calibration should take 10 minutes and Skip calibration should take 3 minutes. Since my simulation time is right around 10 minutes, I am suspecting that I am doing a full calibration for some reason. Is there a way to check if calibration is really skipped?

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I am not seeing this or similar messages in the Modelsim transcript. My project is very basic. It contains one instance of the DDR3 IP and I am trying to do a simple write followed by a read. What performance should I expect with the Starter edition of Modelsim?

According to this article at http://www.altera.com/literature/hb/external-memory/emi_debug.pdf, full calibration should take 10 minutes and Skip calibration should take 3 minutes. Since my simulation time is right around 10 minutes, I am suspecting that I am doing a full calibration for some reason. Is there a way to check if calibration is really skipped?

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Examine "calib_skip_steps" (e.g. "sim:/x_ddr3_tb/x_ddr3_inst/mem_if_ddr3_emif_0/p0/calib_skip_steps"); I believe it ought to be all 1's if you are actually skipping everything.

In my simulation, 'local_init_done' goes high around 126us and takes maybe 2 minutes to get there, even with the project size warning I posted previously.

Hi all!

May I know where to check "calib_skip_steps" from the example link ted gave:(e.g. sim:/x_ddr3_tb/x_ddr3_inst/mem_if_ddr3_emif_0/p0/calib_skip_steps")?

My DDR3 UniPHY design is very basic with read and write operation. I use generated example design for simulation.

For my case, I choose skip calibration mode and also disable the EMIF On-Chip Debug Toolkit in Diagnostics tab of the UniPHY-based controller MegaWizard GUI. However, my overall simulation time take atmost 1 hour.

By the way, I also found Transcript from ModelSim state that:

Code:

# ** Warning: Design size of 17487 statements exceeds ModelSim Altera Starter recommended capacity.# Expect performance to be adversely affected.

Is this really mean that fully purchase of ModelSim Altera can solve this issue? I would like to fasten the simulation as fast as possible like urs.

Thanks!

Hi all,

Can you tell me which device you guys are using?

i am working on a MAX10 device and i don't see an option to skip calibration mode and to disable EMIF On-chip debug Toolkit. I am wondering this is not available for MAX10 devices. Any help on this issue is appreciated.

Thanks