I'm running a code on a server to generate a 10,000x10,000 matrix and save each value into a table (MySQL).

I was informed by the administrator that I can use up to 32g of the physical memory of our server but have no idea how to do it. I googling around and so far only found information about setting the virtual memory using -Xmx. I tried it anyway and using top command I got this:

PID  USER PR NI  VIRT   RES   SHR  S  %CPU  %MEM  TIME+    COMMAND                                                                                                             
3981  gv  35 15  32.4g  304m  10m  S   1     0.5  9:54.84    java                                                                                                                 

So, it shows that the -Xmx set the VIRT and not the RES value.

Is there anyway that I can set the RES value into 32g?