Abaqus System Error Code 5

[louisa]

Dear All,

Hope you are all having a wonderful summer!

I am running the python code in CAE. My simulation involves a lot of iterations, and in every iteration, I change the material properties and run a job. But after every 10 iterations, I will get the error message saying that simulation aborted with system error code 5. So I have to restart the simulation again, get another ~10 iterations before another error message appears.

I cannot identify any error with the simulation itself. So I guess the error is caused by memory overflow. My computer has 4GB memory, but the dat file says that the job only takes about 200-300MB memory. So I guess there is some memory accumulation for every job.

I'm wondering whether there is any way to free the memory after each job completes without having to close and restart Abaqus. I do close the previous odb file before starting another iteration, but this doesn't help. I'm so tired of restarting Abaqus again and again, about 10 times per day. I would appreciate any comment on this problem.

 

[xerf]

-I had the same problem with (Abaqus') Python not freeing the memory when the same script is run repeatedly. This was especially characteristic to v6.5. I've noticed it happens to a lesser extent to v6.6 (ABAQUS upgraded to Python 2.3). (I still do not have access to v6.7). It happens because objects remain referred by various references and the garbage collector cannot free the memory.

-One general approach is to minimize usage of refrences to ABAQUS'objects and delete the references you do not need anymore. I kind of prefer storing the names of the objects and retreive them from the corresponding repository when I need them.

-Try not to regenerate the entire model but rather to update the things that change if you run a parametric study via "setValues(...)" methods, if possible.

 

[louisa]

I see. I did regenerate the whole model before. I will try your suggestions of just updating the properties. Thank you, xerf.

I used v6.6 before and our group just bought v6.7. Unfortunately the problem remains in v6.7 Maybe the ultimate solution is to earn a lot of money first and then buy 64-bit machine with 64GB memories

 

[mizzjoey]

hi.

Sorry to jump in, but I'm facing exactly the same thing! I'm sorry I can't offer a solution, though. I close and re-start Viewer over and over again, too...