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- From: Maxim Abalenkov <maxim.abalenkov@gmail.com>
- To: starpu-devel@lists.gforge.inria.fr
- Subject: [Starpu-devel] [StarPU+MPI debuging]
- Date: Fri, 5 Oct 2018 12:18:03 +0100
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Dear all,
I experience the following StarpU+MPI problem. The code either hangs or crashes with the following debug backtrace. I'm not very certain, if there is anything else I could do to analyse the problem further. I run the code via mpiexec -np 1 gdb ./test. Thank you and have a good day ahead!
Thread 2 "CPU 0" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffed0e4700 (LWP 4121)]
0x00007ffff7b72e92 in _starpu_can_use_nth_implementation (nimpl=0,
cl=0x82fff7e99e20, arch=STARPU_CPU_WORKER) at core/workers.c:283
283 return func != NULL;
(gdb) bt
#0 0x00007ffff7b72e92 in _starpu_can_use_nth_implementation (nimpl=0,
cl=0x82fff7e99e20, arch=STARPU_CPU_WORKER) at core/workers.c:283
#1 starpu_worker_can_execute_task (workerid=workerid@entry=0,
task=task@entry=0x555555889890, nimpl=nimpl@entry=0) at core/workers.c:334
#2 0x00007ffff7c23d6b in pred_can_execute (pworkerid=<optimized out>,
t=<optimized out>) at sched_policies/prio_deque.c:36
#3 _starpu_prio_deque_pop_task_for_worker (pdeque=0x555555882cd0,
workerid=workerid@entry=0, skipped=skipped@entry=0x7fffed0e32e4)
at sched_policies/prio_deque.c:71
#4 0x00007ffff7bb79dd in ws_pick_task (ws=0x55555587fbd0, target=0, source=0)
at sched_policies/work_stealing_policy.c:541
#5 ws_pop_task (sched_ctx_id=0) at sched_policies/work_stealing_policy.c:541
#6 0x00007ffff7ba0a25 in _starpu_pop_task (
worker=worker@entry=0x7ffff7c89500 <_starpu_config+1568>)
at core/sched_policy.c:869
#7 0x00007ffff7bcc352 in _starpu_get_worker_task (
worker=worker@entry=0x7ffff7c89500 <_starpu_config+1568>,
workerid=workerid@entry=0, memnode=memnode@entry=0)
at drivers/driver_common/driver_common.c:375
#8 0x00007ffff7c36236 in _starpu_cpu_driver_run_once (
cpu_worker=cpu_worker@entry=0x7ffff7c89500 <_starpu_config+1568>)
at drivers/cpu/driver_cpu.c:303
#9 0x00007ffff7c364ed in _starpu_cpu_worker (
arg=0x7ffff7c89500 <_starpu_config+1568>) at drivers/cpu/driver_cpu.c:407
#10 0x00007ffff1aa1a9d in start_thread () from /usr/lib/libpthread.so.0
#11 0x00007ffff19d1a43 in clone () from /usr/lib/libc.so.6
[Switching to Thread 0x7fffed0e4700 (LWP 4121)]
0x00007ffff7b72e92 in _starpu_can_use_nth_implementation (nimpl=0,
cl=0x82fff7e99e20, arch=STARPU_CPU_WORKER) at core/workers.c:283
283 return func != NULL;
(gdb) bt
#0 0x00007ffff7b72e92 in _starpu_can_use_nth_implementation (nimpl=0,
cl=0x82fff7e99e20, arch=STARPU_CPU_WORKER) at core/workers.c:283
#1 starpu_worker_can_execute_task (workerid=workerid@entry=0,
task=task@entry=0x555555889890, nimpl=nimpl@entry=0) at core/workers.c:334
#2 0x00007ffff7c23d6b in pred_can_execute (pworkerid=<optimized out>,
t=<optimized out>) at sched_policies/prio_deque.c:36
#3 _starpu_prio_deque_pop_task_for_worker (pdeque=0x555555882cd0,
workerid=workerid@entry=0, skipped=skipped@entry=0x7fffed0e32e4)
at sched_policies/prio_deque.c:71
#4 0x00007ffff7bb79dd in ws_pick_task (ws=0x55555587fbd0, target=0, source=0)
at sched_policies/work_stealing_policy.c:541
#5 ws_pop_task (sched_ctx_id=0) at sched_policies/work_stealing_policy.c:541
#6 0x00007ffff7ba0a25 in _starpu_pop_task (
worker=worker@entry=0x7ffff7c89500 <_starpu_config+1568>)
at core/sched_policy.c:869
#7 0x00007ffff7bcc352 in _starpu_get_worker_task (
worker=worker@entry=0x7ffff7c89500 <_starpu_config+1568>,
workerid=workerid@entry=0, memnode=memnode@entry=0)
at drivers/driver_common/driver_common.c:375
#8 0x00007ffff7c36236 in _starpu_cpu_driver_run_once (
cpu_worker=cpu_worker@entry=0x7ffff7c89500 <_starpu_config+1568>)
at drivers/cpu/driver_cpu.c:303
#9 0x00007ffff7c364ed in _starpu_cpu_worker (
arg=0x7ffff7c89500 <_starpu_config+1568>) at drivers/cpu/driver_cpu.c:407
#10 0x00007ffff1aa1a9d in start_thread () from /usr/lib/libpthread.so.0
#11 0x00007ffff19d1a43 in clone () from /usr/lib/libc.so.6
--
Best wishes,
Maxim
- [Starpu-devel] [StarPU+MPI debuging], Maxim Abalenkov, 05/10/2018
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