I have a program using MKL 9.1 for DFT and icc 11.1 on 32-bit Linux. If I do a particularly large calculation, and hit ctrl-C in mid-calculation, the ctrl-C is ignored, and the program then seems to go into an endless loop, using 100% CPU but never returning from the dft call. It is quite reproducible. The only way to get rid of the zombie at this point is a 'kill -9' or similar.
Attaching with the debugger at this point shows the following stack trace:
#0 0x0050e424 in __kernel_vsyscall ()
#1 0x001eed9c in sched_yield () from /lib/libc.so.6
#2 0x08daaeca in __kmp_yield ()
#3 0x08d94028 in __kmp_join_barrier ()
#4 0x08d94a51 in __kmp_join_call ()
#5 0x08d87b63 in __kmpc_fork_call ()
#6 0x083cc559 in mkl_dft_compute_backward_z_par ()
I can single-step up to the sched_yield() at which point the debugger also becomes useless.
Anyhelp would be greatly appreciated.