Hello, I wrote a gcc program and I am running it on a unix server that has 8 cpus. I have to run the program for different sets of input paramters. I run the program 6 times simultaneously with 6 different sets of input parameters. They run for some time and then they stop. However when I run only 3 of them simultaneously, and then run the other 3, they all finish successfully. Can you please advise me what to do? I do not know if it is a bug or a problem with the memory the system allows me to use. The output of the ulimit -a command is the following: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 88063 max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 88063 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Thanks, Anna