build

[Myasnikova]

Hello! I have some problem with project building. I tried to build it on virtual machine ubuntu 18.04 following readme and after 95% of loading computer froze without any errors. I tried to do this three times and in every my attempt it froze. May be somebody had the same problem and will be able to help me, please.

[NikolausDemmel]

Out of memory?

[Myasnikova]

After stopping of build process I have 17Gb of free memory on my virtual machine and I didn't have any errors about lack of memory

[NikolausDemmel]

Other than out of RAM I don't know of a reason why compiling should kill your VM, sorry...

[Myasnikova]

RAM - 4 Gb, this is not enough?

[Myasnikova]

What are the system requirements for this project?

[NikolausDemmel]

4GB might not be enough. Watch your system monitor to see if OOM is the issue.

Things you can try:

• more RAM for the VM
• compile with -j1
• try clang instead of gcc

[vonzy]

You can try enlarging the swap space if your RAM is not enough.

[kckwan]

I had the same problem before. I built the DSO code with VM ubuntu in VirtualBox, and the make -j process freeze without any errors after 80% to 90% progress. Due to the -j command (in the installation guideline), make run all the jobs (i.e., compiling .cpp files) simultaneously. Each compiling job requires around 20 to 60 second, and it is too heavy for my VM. I tried make instead of make -j, and the problem solved.

[NikolausDemmel]

Note: I just updated the readme to recommend make -j4 instead. Choose the number of make threads (e.g. number of cores or less if memory is the limit).