Please download and install hpxMP before you can try out thses examples. If you want to know how to configure hpxMP, See the Installation Instruction.
In the hpxMP build directory, under folder examples/openmp, a simple hello world example is provided. To run the example, simply type
OMP_NUM_THREADS=N LD_PRELOAD=..path_to_hpxMP_build_dir/libhpxmp.so ./hello_worldIf N = 4, The output should be something like this if you are in Debug mode:
HPX OpenMP runtime has started
Hello World from thread = [1]
Hello World from thread = [0]
Hello World from thread = [2]
Hello World from thread = [3]
this is not in parallel region
Stopping HPX OpenMP runtime
StoppedFor release mode, it will not tell you hpx Openmp run time start/end, print out this:
Hello World from thread = [1]
Hello World from thread = [0]
Hello World from thread = [2]
Hello World from thread = [3]
this is not in parallel regionIf you simply type
MP_NUM_THREADS=N ./hello_worldIt will run with the OpenMP library comes with your compiler, which should have similar print out:
Hello World from thread = [0]
Hello World from thread = [1]
Hello World from thread = [3]
Hello World from thread = [2]
this is not in parallel regionNote: More test cases are under folder tests/openmp/unit, which are run on regular bases to check the correctness of the hpxMP library.
In the hpxMP build directory, under folder examples/ompt, a simple hello world and task example is provided. To run the hello world example, the registered callbacks are in callback.h, simply type
OMP_NUM_THREADS=N LD_PRELOAD=..path_to_hpxMP_build_dir/libhpxmp.so ./hello_worldIf N = 4, The output should be something like this if you are in Debug mode:
ompt_start_tool
0: NULL_POINTER=(nil)
ompt_event_task_create: new_task_id=281474976710657, codeptr_ra=(nil), task_type=ompt_task_initial=1
ompt_event_thread_begin: thread_type=ompt_thread_worker=2, thread_id=562949953421313
ompt_event_thread_begin: thread_type=ompt_thread_worker=2, thread_id=844424930131969
ompt_event_thread_begin: thread_type=ompt_thread_worker=2, thread_id=1125899906842625
ompt_event_thread_begin: thread_type=ompt_thread_worker=2, thread_id=1407374883553281
HPX OpenMP runtime has started
ompt_event_parallel_begin: parallel_id=844424930131970, requested_team_size=2,codeptr_ra=0x7fcea7599d0f, invoker=2
ompt_event_implicit_task_begin: parallel_id=844424930131970, task_id=1125899906842626
ompt_event_implicit_task_begin: parallel_id=844424930131970, task_id=1407374883553282
Hello World from thread = [0]
Hello World from thread = [1]
ompt_event_implicit_task_end: parallel_id=0, task_id=1125899906842626
ompt_event_implicit_task_end: parallel_id=0, task_id=1407374883553282
ompt_event_parallel_end: parallel_id=844424930131970, codeptr_ra=0x7fcea7599d0f, invoker=2
this is not in parallel region
Stopping HPX OpenMP runtime
ompt_event_thread_end: thread_id=1407374883553281
ompt_event_thread_end: thread_id=562949953421313
ompt_event_thread_end: thread_id=844424930131969
ompt_event_thread_end: thread_id=1125899906842625
StoppedIf you simply type
MP_NUM_THREADS=4 ./hello_worldIt will run with the OpenMP library comes with your compiler, which should have similar print out:
ompt_start_tool
0: NULL_POINTER=(nil)
ompt_event_thread_begin: thread_type=ompt_thread_initial=1, thread_id=281474976710657
ompt_event_task_create: new_task_id=281474976710658, codeptr_ra=(nil), task_type=ompt_task_initial=1
ompt_event_parallel_begin: parallel_id=281474976710659, requested_team_size=2,codeptr_ra=0x40120d, invoker=2
ompt_event_implicit_task_begin: parallel_id=281474976710659, task_id=281474976710660
Hello World from thread = [0]
ompt_event_thread_begin: thread_type=ompt_thread_worker=2, thread_id=562949953421313
ompt_event_implicit_task_begin: parallel_id=281474976710659, task_id=562949953421314
Hello World from thread = [1]
ompt_event_implicit_task_end: parallel_id=0, task_id=281474976710660
ompt_event_parallel_end: parallel_id=281474976710659, codeptr_ra=0x40120d, invoker=2
this is not in parallel region
ompt_event_thread_end: thread_id=281474976710657
ompt_event_implicit_task_end: parallel_id=0, task_id=562949953421314
ompt_event_thread_end: thread_id=562949953421313
0: ompt_event_runtime_shutdownNote: More test cases are under folder tests/ompt, which are run on regular basis to check the correctness of the hpxMP OMPT.