Hey guys,

I'm still getting used to C, but need to run a really large simulations in it. I have a very n00b question about how C handles memory etc.

More specifically, is it risky to simultaneously execute the same program in C? As in, if there are some inconsequential (for a single execution) memory leaks, or global variables...if I run other instances of the code at the same time... can they possibly get in each other's way?

(there is no IO collisions, as in multiple running instances will not try to for example access the same files..that could of course be a problem, but its not the case)

Sorry if the question is a bit vague, but hope understandable.
I ran into a problem like this in python , where apparently a global variable's scope carries over into parallel executions of a program, if started by the same script.