How do I solve Java errors with R2018a on Ubuntu 16.04

I recently updated to R2018a and I've been encountering a few problems:

• It takes much longer for the program to start and when it does it's laggy
• when I run something expensive e.g. train a neural network, it just hangs and I need to force restart the machine (my friends linux machine running the same code on 2017a works just fine, and we have comparable specs)
• It keeps throwing Java errors. E.g. upon starting MATLAB:

    % Exception in thread "Image Fetcher 0" java.lang.OutOfMemoryError: GC overhead limit exceeded
  at java.io.BufferedInputStream.<init>(BufferedInputStream.java:203)
  at java.io.BufferedInputStream.<init>(BufferedInputStream.java:183)
  at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:250)
  at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:269)
  at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:205)
  at sun.awt.image.ImageFetcher.run(ImageFetcher.java:169)

I've increased the Java heap memory to the maximum (1965 mb), but the issue still persists. I've monitored swap memory usage, but it doesn't seem to be used during these operations (remains 0) The swap isn't encrypted.

Answer 1

[Sergio Ciliberto]

what worked for me is to launch matlab with the following command line

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libstdc++.so.6 /usr/local/MATLAB/R2018a/bin/matlab

you can also look on the site https://www.math.univ-paris13.fr/~cuvelier/Matlab/Ubuntu_16-04LTS.html