3 Replies Latest reply on Mar 20, 2011 12:41 PM by Jerry Steiger

    Simulation Long Run Time

    Lee Macklem

      I have been running a number of simulations in 2010 which take a lot of time to run.  I was reading through the forum to see if anyone else has long run times.  It looks like a number of people have been using multiple core processors.  I am running Windows 7 x64 and have a Intel Core i7 CPU x920.  I also have 16 GB of memory in my computer.  I am currently running a simulation which has been going for over 32 hours, it is an assembly with about 50 parts so there are a variety of contact surfaces.  I have a hard time stopping a simulation like this because I have seen where it says the solver is 27% through after over 10 hours and then it will go from 27% to 100% in the last half hour.  I have an issue with this as it is not real time so you really never know how far along the simulation is.


      Has anyone else had run times this long (30+ hours)?  I am attaching a screen shot showing how hard it is working my computer.  The memory usage ranges from 9 to 11 GB and the CPU usage goes from 40% and up.


      Any thoughts on faster computers.  I have read the reviews on the BOXX Extreme computer which sounds good, has anyone else purchased one of these for SolidWorks simulation?

        • Re: Simulation Long Run Time
          Keith Parker

          Lee - this won't help you all that much with your quest for PC info, but I'd shutdown Outlook and all the other stuff (including Startup programs) that you don't need to have running.  Multiple cores aside, looks like your PC needs all the help it can get!

          • Re: Simulation Long Run Time
            John Sutherland

            If you do a big job you must expect long run times.  There is no silver bullet.  Get used to it or buy better software.

            • Re: Simulation Long Run Time
              Jerry Steiger



              I'm not familiar with Simulation (I mostly use ANSYS), so I would listen to the others a lot more than me. It doesn't look like you need more memory, as you aren't pegging your memory usage, but it could be that Simulation is limiting the amount of memory it uses to fit the amount available, so adding more memory could result in less disk access and faster run times. It does seem like you are getting a lot of disk and network access. Perhaps that is normal for Simulation but I would be suspicious.


              I have had nonlinear problems that took about a week to run, so it could just be that you are stuck with long waits.


              Jerry Steiger