Folks, I am not certain if this has anything to do with Gentoo or not. I am programming something in C, and I need to address as much memory as possible for the arrays that need to be specified as global variables. I have 2 GB memory on this machine, and I'd like to use as much of it as possible, but my code segfaults if I try to allocate more than around 1 GB of RAM to my running code like that. I heard that this is due to the dynamic libraries. If I compile with gcc and use the "static" flag, I can allocate close to the physical limit (maybe 1.7 or 1.8 GB) and also if I allocate my variables dynamically, I can do the same thing. But the problem is, I cannot compile statically since I need the math libraries. I could go the route of dynamic allocation, but I need to invest significant efforts to restructure my code. I saw a thread on something similar to this on Beowulf, where they suggested moving the dynamic libraries somehow :
"changing the location of the shared libraries in memory by changing the variable __PAGE_OFFSET in kernel header files"... How do I do that and do i need to recompile the kernel after attempting something like this? Thanks! Denis -- gentoo-user@gentoo.org mailing list
