Hello there,

I am getting a fatal due to usleep_thread syscall while simulating a
few multithreaded configuration for inorder in ALPHA_SE. And this
message seems to be preceded by a sequence of warnings like this:
warn: context 0: XXX consecutive store conditional failures

It would be helpful to debug if I can have some comments on it. Are
the warning and the panic really related? Also, when might a
usleep_thread syscall get called? Couldn't find much info on google.

The workloads comprise of spec 2k benchmarks and when run as a single
thread finish without any problems.

Here are the contents of the simerr file for the one of the workloads:

warn: Sockets disabled, not accepting gdb connections
For more information see: http://www.m5sim.org/warn/d946bea6
warn: ignoring syscall sigprocmask(1073070158, 1, ...)
For more information see: http://www.m5sim.org/warn/5c5b547f
warn: ignoring syscall sigprocmask(1073070158, 1, ...)
For more information see: http://www.m5sim.org/warn/5c5b547f
warn: ignoring syscall sigprocmask(0, 3, ...)
For more information see: http://www.m5sim.org/warn/5c5b547f
warn: ignoring syscall sigprocmask(0, 3, ...)
For more information see: http://www.m5sim.org/warn/5c5b547f
hack: return a bogus context id
warn: context 0: 100000 consecutive store conditional failures
For more information see: http://www.m5sim.org/warn/b242bc93
warn: context 0: 200000 consecutive store conditional failures
For more information see: http://www.m5sim.org/warn/b242bc93
warn: context 0: 300000 consecutive store conditional failures
For more information see: http://www.m5sim.org/warn/b242bc93
fatal: syscall usleep_thread (#251) unimplemented.
 @ cycle 10657791500
[unimplementedFunc:build/ALPHA_SE/sim/syscall_emul.cc, line 81]
Memory Usage: 1208176 KBytes
For more information see: http://www.m5sim.org/fatal/be2b42f

regards,
Soumyaroop

-- 
Soumyaroop Roy
Ph.D. Candidate
Department of Computer Science and Engineering
University of South Florida, Tampa
http://www.csee.usf.edu/~sroy
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