Hi All, I have a problem with torque (openPBS) on x86_64 CentOS 5.2. Just to add there's no problem on a 32bit CentOS 5.2 or 64bit Ubuntu 8.04. The problem is that pbs_mom's child quits without giving any error logs. [root at frodo9 torque-2.3.3]# strace -f pbs_mom . . . bind(6, {sa_family=AF_INET, sin_port=htons(15002), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 time(NULL) = 1222785330 listen(6, 512) = 0 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 7 setsockopt(7, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 bind(7, {sa_family=AF_INET, sin_port=htons(15003), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 time(NULL) = 1222785330 listen(7, 512) = 0 fcntl(5, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0 clone(Process 18441 attached child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x2b276258fdb0) = 18441 [pid 18441] getsockname(3, {sa_family=AF_INET, sin_port=htons(56711), sin_addr=inet_addr("172.16.0.9")}, [16]) = 0 [pid 18441] getpeername(3, {sa_family=AF_INET, sin_port=htons(389), sin_addr=inet_addr("172.16.2.24")}, [68719476752]) = 0 [pid 18441] fcntl(3, F_GETFD) = 0x1 (flags FD_CLOEXEC) [pid 18441] dup(3) = 8 [pid 18441] fcntl(8, F_SETFD, FD_CLOEXEC) = 0 [pid 18441] socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 9 [pid 18441] close(3) = 0 [pid 18441] fcntl(9, F_GETFD) = 0 [pid 18441] dup2(9, 3) = 3 [pid 18441] fcntl(3, F_SETFD, 0) = 0 [pid 18441] close(9) = 0 [pid 18441] write(3, "\25\3\1\0 \232\17\205\301f<O0\352\246\357\344Z\31&\243\361\356\2128\242\377\7O{\267\333"..., 37 <unfinished ...> [pid 18440] exit_group(0) = ? [pid 18441] <... write resumed> ) = -1 EPIPE (Broken pipe) [pid 18441] --- SIGPIPE (Broken pipe) @ 0 (0) --- Process 18441 detached [root at frodo9 torque-2.3.3]# I have asked torque users mailing list, but since the problem is related strictly to CentOS 5.2 64bit, I thought I would go ahead and ask here. Any help is appreciated. Thanks, Daniel -- Daniel Andrzejewski student IT Administrator Elec Engr & Comp Science University of Tennessee (865) 974 - 4388 (work) "Investment in knowledge always pays the best interest" Benjamin Franklin --