I work in comsol. I'm currently using core i7 based hp pavilion (5 yrs old), with 16GB RAM where I regularly faces some issues like hanging, unable to open files larger in size (even 10GB), problem in display driver and so on. So, any suggestion about, how to recover from these issues? Some friends even suggest me to buy a workstation.
Is there any possibility for me to work with same PC, or should I've to change it?
You might want to check first about the usage of RAM. Perhaps 16 GB is not enough and your computer runs into troubles with large systems.
Open a system monitor and observe RAM usage with one of those files. If using a lot of memory (say, more than 70-80%) you can try getting more like 32 or 64 GB total.
If no, buy a newer computer and/or run a stable operating system.
@Fernando: Even my question is the same. I've just possibility of extending the RAM upto 32GB. Suggest a PC that is suitable to use 5.2 version. Even if it is workstation, suggest me which company would withstand the load.
Hello, i worked in COMSOL 5.2 using a worstation from HP, didn't have any issue.
If you are low in RAM you can change the settings for an optimization in the RAM usage, i don't remember how to do it, but in the manual, Introduction to COMSOL multiphysics, you can se how to do it.
I attached the PDF.
Grettings
Hi, One of the most frequent crashes for Comsol are for unlicensed crack versions! Further, as mentioned above, the computer allots RAM for application & increasing it supernaturally, wouldn't help in the process effectively! Also if you desire for RAM upgrade, make sure the right frequencies of RAMS are installed! One might need to upgrade the processor speed, it the model is old( in you case, simply specifying i7 doesn't specify the model & processor's speed). But yes, apart from the cracked version COMSOL crashes, one of the pother type of crash are due to insignificant juice of system. Try uploading the error message for more technical support(if available separately ).
Any workstation from a reputable brand should take the job properly.
Now I have a pair of HP z620 working without any problem in calculations (I attach the link). They are quite powerful for CPU jobs and you can install up to 2 processors.
Also, I built a workstation based on a ASUS X99-E WS motherboard to manage 4 GPUs 980 Ti.
All three computers work non-stop at 100% load 24/7. No crash in any computer so far. All are running Ubuntu Linux 16.
The important thing is that is you want to run long calculations, I recommend you to use server processor, for example, Xeon from Intel and ECC RAM memory. Then you will be sure they are very stable during long time. Probably you will need a lot of RAM. 32 GB for a start in ECC RDIMM is very good.
http://www8.hp.com/us/en/campaigns/workstations/z620.html
It happened to me before. By googling around, i figure out it has something to do with the java memory. It can be set. It's easier to resolve if you get the error code.
Alwasy check the RAM, if in future you have to use very fine meshes or you want to store lot of time step data. Then its better to increase your RAM. In simple words it should be more than the size of your final saved model.
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