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https://designers-guide.org/forum/YaBB.pl Simulators >> Circuit Simulators >> Simulation results not stored after 184ms https://designers-guide.org/forum/YaBB.pl?num=1278069552 Message started by iep on Jul 2nd, 2010, 4:19am |
Title: Simulation results not stored after 184ms Post by iep on Jul 2nd, 2010, 4:19am I am running some simple simulations on a very basic block comprising a few switches and some large resistors and caps. Due to the size of the resistors and caps, the time constants invloved are very long (up to 1 second). So, my transient simulaiton time is set to 1 second. The problem is that when I plot the waveforms (or print the data points) the data stops at 184ms. The issue is not related to number of data points as I have used the strobe and maxstep settings to force a smaller or greater number of points. Whether I force 1000 or 100000 points, the data always stops at 184ms. I should add that the output log reports no errors or warnings and shows that the simulation has run for the full 1 second. I have tried both the Wavescan and AWD calculators/vieres and the simple directplot functions. I have also added a clock source to the sim so that there is a voltage node that varies constantly, but this has made no difference. Can anyone advise? Is there a max sim length setting that I am missing? Cheers. |
Title: Re: Simulation results not stored after 184ms Post by pancho_hideboo on Jul 2nd, 2010, 5:04am iep wrote on Jul 2nd, 2010, 4:19am:
Confirm data size. Is it 2GByte ? See http://www.designers-guide.org/Forum/YaBB.pl?num=1235309563/1#1 |
Title: Re: Simulation results not stored after 184ms Post by oermens on Jul 2nd, 2010, 9:39am Assuming you use spectre simulator and WaveScan from IC5141, add this to your .cshrc (or whatever your environment setup script is). setenv PSF_WRITE_CHUNK_MODE_ON true Make sure your output format is PSF, this doesn't work for SST2. If you are using IC61x then it may be something else, I have not have this problem with ViVA as it has no size limitation. If you still have the simulation results and they are in SST2 format you can use SimVision. |
Title: Re: Simulation results not stored after 184ms Post by iep on Jul 5th, 2010, 1:26am False alarm. After reebooting the machine I was running on, all is well. For the record, was using Cadence ICFB 5.1.41 iep |
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