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Huge psf file!! Cannot allocate memory

SPA1984

Hello,

I made an Ocean script to do a transient analysis. When I try to plot or export the waveforms the system gives me a message like "Cannot allocate mamory for the transition file". The psf file has a 56,6GB weigh.

I also try to save a txt file using the command ocnPrint, but when the simulation is done, the system gives me the same error.

Is there the possibility to generate several psf files? One for each waveform.

Is there any function to save the a txt file for each one of the 16 waveform on the fly? This way, the system doesn't have to handle this amount of memory.

I'm using Results Browser in ADEL  with aps simulator.

Thank you very much.

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  • Sergi,

    Assuming that it's spectre you're saving the results from, all waveforms will have the same number of points (unless you've used the compression option on the transient options form), and so for 16 waveforms in 56Gbytes, that's 3.5G per waveform. Assuming that the memory usage is the same as the disk usage (it may be more), that's going to use up the entire 32 bit memory space of your virtuoso session.

    IC613 didn't have 64 versions of all the executables - that came in during IC614 (so there was no 64 bit virtuoso). Is there a good reason why you have to use such an old version? You could always run "viva -64" standalone from IC615, say - and keep all the rest of your design work in IC613 if you really can't change for some reason.

    I suspect that saving to an ASCII file won't help you much if the volume of data is so high.

    I would suggest using transient options such as strobeperiod or skipcount might be a good idea to reduce the number of points. Or use compression...

    Regards,

    Andrew.

Reply

  • Sergi,

    Assuming that it's spectre you're saving the results from, all waveforms will have the same number of points (unless you've used the compression option on the transient options form), and so for 16 waveforms in 56Gbytes, that's 3.5G per waveform. Assuming that the memory usage is the same as the disk usage (it may be more), that's going to use up the entire 32 bit memory space of your virtuoso session.

    IC613 didn't have 64 versions of all the executables - that came in during IC614 (so there was no 64 bit virtuoso). Is there a good reason why you have to use such an old version? You could always run "viva -64" standalone from IC615, say - and keep all the rest of your design work in IC613 if you really can't change for some reason.

    I suspect that saving to an ASCII file won't help you much if the volume of data is so high.

    I would suggest using transient options such as strobeperiod or skipcount might be a good idea to reduce the number of points. Or use compression...

    Regards,

    Andrew.

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