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ex-cxx-overhead
This example demonstrates the measurement of instrumentaion overheads (both in timing and resident set size) for timemory with increasing number of instrumentation components used.
Build
See examples.
Expected Output
$ ./ex_cxx_overhead
#------------------------- tim::manager initialized [id=0][pid=5626] -------------------------#
#----------------------------------------------------------------------------------------#
# Environment settings:
# DYLD_INSERT_LIBRARIES =
# LD_PRELOAD =
# PAT_RT_PERFCTR =
# TIMEMORY_ADD_SECONDARY = true
# TIMEMORY_ALLOW_SIGNAL_HANDLER = true
# TIMEMORY_AUTO_OUTPUT = true
# TIMEMORY_BANNER = true
# TIMEMORY_CALIPER_CONFIG_ENABLED = true
# TIMEMORY_CALIPER_LOOP_MARKER_ENABLED = true
# TIMEMORY_CALIPER_MARKER_ENABLED = true
# TIMEMORY_COLLAPSE_PROCESSES = true
# TIMEMORY_COLLAPSE_THREADS = true
# TIMEMORY_COUT_OUTPUT = true
# TIMEMORY_CPU_AFFINITY = false
# TIMEMORY_CPU_ENABLED = true
# TIMEMORY_CPU_ROOFLINE_OP_ENABLED = true
# TIMEMORY_CPU_UTIL_ENABLED = true
# TIMEMORY_CRAYPAT =
# TIMEMORY_CUDA_EVENT_BATCH_SIZE = 5
# TIMEMORY_CUPTI_ACTIVITY_KINDS =
# TIMEMORY_CUPTI_ACTIVITY_LEVEL = 1
# TIMEMORY_CUPTI_DEVICE = 0
# TIMEMORY_CUPTI_EVENTS =
# TIMEMORY_CUPTI_METRICS =
# TIMEMORY_CURRENT_PEAK_RSS_ENABLED = true
# TIMEMORY_DART_COUNT = 1
# TIMEMORY_DART_LABEL = true
# TIMEMORY_DART_OUTPUT = false
# TIMEMORY_DART_TYPE =
# TIMEMORY_DEBUG = false
# TIMEMORY_DESTRUCTOR_REPORT = false
# TIMEMORY_DIFF_OUTPUT = false
# TIMEMORY_DISABLE_ALL_SIGNALS = false
# TIMEMORY_ENABLED = true
# TIMEMORY_ENABLE_ALL_SIGNALS = false
# TIMEMORY_ENABLE_SIGNAL_HANDLER = false
# TIMEMORY_ERT_ALIGNMENT = 0
# TIMEMORY_ERT_BLOCK_SIZE = 1024
# TIMEMORY_ERT_GRID_SIZE = 0
# TIMEMORY_ERT_MAX_DATA_SIZE = 0
# TIMEMORY_ERT_MAX_DATA_SIZE_CPU = 0
# TIMEMORY_ERT_MAX_DATA_SIZE_GPU = 500000000
# TIMEMORY_ERT_MIN_WORKING_SIZE = 0
# TIMEMORY_ERT_MIN_WORKING_SIZE_CPU = 64
# TIMEMORY_ERT_MIN_WORKING_SIZE_GPU = 10000000
# TIMEMORY_ERT_NUM_STREAMS = 1
# TIMEMORY_ERT_NUM_THREADS = 0
# TIMEMORY_ERT_NUM_THREADS_CPU = 12
# TIMEMORY_ERT_NUM_THREADS_GPU = 1
# TIMEMORY_ERT_SKIP_OPS =
# TIMEMORY_FILE_OUTPUT = true
# TIMEMORY_FLAMEGRAPH_OUTPUT = true
# TIMEMORY_FLAT_PROFILE = false
# TIMEMORY_INPUT_EXTENSIONS = json,xml
# TIMEMORY_INPUT_PATH =
# TIMEMORY_INPUT_PREFIX =
# TIMEMORY_INSTRUCTION_ROOFLINE = false
# TIMEMORY_IO_IN_ENABLED = true
# TIMEMORY_IO_OUT_ENABLED = true
# TIMEMORY_JSON_OUTPUT = false
# TIMEMORY_KERNEL_MODE_ENABLED = true
# TIMEMORY_LIBRARY_CTOR = true
# TIMEMORY_LIKWID_MARKER_ENABLED = true
# TIMEMORY_MAJOR_PAGE_FLTS_ENABLED = true
# TIMEMORY_MALLOC_GOTCHA_ENABLED = true
# TIMEMORY_MAX_DEPTH = 65535
# TIMEMORY_MAX_THREAD_BOOKMARKS = 50
# TIMEMORY_MAX_WIDTH = 120
# TIMEMORY_MEMORY_PRECISION = 3
# TIMEMORY_MEMORY_SCIENTIFIC = false
# TIMEMORY_MEMORY_UNITS = kB
# TIMEMORY_MEMORY_WIDTH = -1
# TIMEMORY_MINOR_PAGE_FLTS_ENABLED = true
# TIMEMORY_MONOTONIC_CLOCK_ENABLED = true
# TIMEMORY_MONOTONIC_RAW_CLOCK_ENABLED = true
# TIMEMORY_MPI_FINALIZE = false
# TIMEMORY_MPI_INIT = false
# TIMEMORY_MPI_THREAD = true
# TIMEMORY_MPI_THREAD_TYPE =
# TIMEMORY_NODE_COUNT = 0
# TIMEMORY_NVTX_MARKER_DEVICE_SYNC = true
# TIMEMORY_OMPT_DATA_TRACKER_ENABLED = true
# TIMEMORY_OMPT_HANDLE_ENABLED = true
# TIMEMORY_OUTPUT_PATH = timemory-ex-cxx-overhead-output
# TIMEMORY_OUTPUT_PREFIX =
# TIMEMORY_PAGE_RSS_ENABLED = true
# TIMEMORY_PAPI_ARRAY0_ENABLED = true
# TIMEMORY_PAPI_ATTACH = false
# TIMEMORY_PAPI_EVENTS =
# TIMEMORY_PAPI_FAIL_ON_ERROR = false
# TIMEMORY_PAPI_MULTIPLEXING = true
# TIMEMORY_PAPI_OVERFLOW = 0
# TIMEMORY_PAPI_QUIET = false
# TIMEMORY_PAPI_VECTOR0_ENABLED = true
# TIMEMORY_PEAK_RSS_ENABLED = true
# TIMEMORY_PLOT_OUTPUT = true
# TIMEMORY_PRECISION = -1
# TIMEMORY_PRIO_CXT_SWCH_ENABLED = true
# TIMEMORY_PROCESS_CPU_ENABLED = true
# TIMEMORY_PROC_CPU_UTIL_ENABLED = true
# TIMEMORY_PYTHON_EXE = /home/mhaseeb/repos/spack/opt/spack/linux-ubuntu18.04-broadwell/gcc-8.4.0/python-3.7.7-2dybrjceqs3qc4k7ci56t56bvzb4csxc/bin/python
# TIMEMORY_READ_BYTES_ENABLED = true
# TIMEMORY_ROOFLINE_EVENTS_CPU =
# TIMEMORY_ROOFLINE_EVENTS_GPU =
# TIMEMORY_ROOFLINE_MODE = op
# TIMEMORY_ROOFLINE_MODE_CPU = op
# TIMEMORY_ROOFLINE_MODE_GPU = op
# TIMEMORY_ROOFLINE_TYPE_LABELS = false
# TIMEMORY_ROOFLINE_TYPE_LABELS_CPU = false
# TIMEMORY_ROOFLINE_TYPE_LABELS_GPU = false
# TIMEMORY_SCIENTIFIC = false
# TIMEMORY_STACK_CLEARING = true
# TIMEMORY_SUPPRESS_PARSING = false
# TIMEMORY_SYS_ENABLED = true
# TIMEMORY_TARGET_PID = 5626
# TIMEMORY_TEXT_OUTPUT = true
# TIMEMORY_THREAD_CPU_ENABLED = true
# TIMEMORY_THREAD_CPU_UTIL_ENABLED = true
# TIMEMORY_THROTTLE_COUNT = 10000
# TIMEMORY_THROTTLE_VALUE = 10000
# TIMEMORY_TIM::COMPONENT::OMPT_TARGET_DATA_TAG_LONG_ENABLED = true
# TIMEMORY_TIMELINE_PROFILE = false
# TIMEMORY_TIME_FORMAT = %F_%I.%M_%p
# TIMEMORY_TIME_OUTPUT = false
# TIMEMORY_TIMING_PRECISION = 6
# TIMEMORY_TIMING_SCIENTIFIC = true
# TIMEMORY_TIMING_UNITS =
# TIMEMORY_TIMING_WIDTH = -1
# TIMEMORY_TRIP_COUNT_ENABLED = true
# TIMEMORY_UPCXX_FINALIZE = true
# TIMEMORY_UPCXX_INIT = true
# TIMEMORY_USER_BUNDLE_ENABLED = true
# TIMEMORY_USER_ENABLED = true
# TIMEMORY_USER_MODE_ENABLED = true
# TIMEMORY_VERBOSE = 0
# TIMEMORY_VIRTUAL_MEMORY_ENABLED = true
# TIMEMORY_VOL_CXT_SWCH_ENABLED = true
# TIMEMORY_WALL_ENABLED = true
# TIMEMORY_WIDTH = 12
# TIMEMORY_WRITTEN_BYTES_ENABLED = true
#----------------------------------------------------------------------------------------#
Running fibonacci(n = 43, cutoff = 28)...
run/ex_cxx_overhead.cpp:199 [with timing = mode::none] answer : 433494437 (# measurments: 0, # unique: 0)
[warmup]>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::none] : 1.082041e+00 sec wall, 1.080000e+00 sec cpu, 0.000 KB peak_rss [laps: 1]
Initializing caliper...
run/ex_cxx_overhead.cpp:199 [with timing = mode::none] answer : 433494437 (# measurments: 0, # unique: 0)
run/ex_cxx_overhead.cpp:199 [with timing = mode::blank] answer : 433494437 (# measurments: 1596, # unique: 15)
run/ex_cxx_overhead.cpp:199 [with timing = mode::blank_pointer] answer : 433494437 (# measurments: 1596, # unique: 15)
run/ex_cxx_overhead.cpp:199 [with timing = mode::basic] answer : 433494437 (# measurments: 1596, # unique: 1596)
run/ex_cxx_overhead.cpp:199 [with timing = mode::basic_pointer] answer : 433494437 (# measurments: 1596, # unique: 1596)
Report from 6384 total measurements and 3222 unique measurements:
>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::none] : 1.082036e+00 sec wall, 1.090000e+00 sec cpu, 0.000 KB peak_rss [laps: 1]
>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::blank] : 1.083617e+00 sec wall, 1.080000e+00 sec cpu, 0.000 KB peak_rss [laps: 1]
>>> difference vs. 15 unique measurements and 1596 total measurements (mode::blank) : 1.580769e-03 sec wall, -1.000000e-02 sec cpu, 0.000 KB peak_rss
>>> average overhead of 15 unique measurements and 1596 total measurements (mode::blank) : 9.900000e-07 sec wall, -6.265000e-06 sec cpu, 0.000 KB peak_rss
>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::blank_pointer] : 1.082705e+00 sec wall, 1.090000e+00 sec cpu, 0.000 KB peak_rss [laps: 1]
>>> difference vs. 15 unique measurements and 1596 total measurements (mode::blank_pointer) : 6.690730e-04 sec wall, 0.000000e+00 sec cpu, 0.000 KB peak_rss
>>> average overhead of 15 unique measurements and 1596 total measurements (mode::blank_pointer) : 4.190000e-07 sec wall, 0.000000e+00 sec cpu, 0.000 KB peak_rss
>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::basic] : 1.083832e+00 sec wall, 1.080000e+00 sec cpu, 520.000 KB peak_rss [laps: 1]
>>> difference vs. 1596 unique measurements and 1596 total measurements (mode::basic) : 1.795429e-03 sec wall, -1.000000e-02 sec cpu, 520.000 KB peak_rss
>>> average overhead of 1596 unique measurements and 1596 total measurements (mode::basic) : 1.124000e-06 sec wall, -6.265000e-06 sec cpu, 0.325 KB peak_rss
>>> run/ex_cxx_overhead.cpp:199 [with timing = mode::basic_pointer] : 1.084386e+00 sec wall, 1.090000e+00 sec cpu, 264.000 KB peak_rss [laps: 1]
>>> difference vs. 1596 unique measurements and 1596 total measurements (mode::basic_pointer) : 2.349486e-03 sec wall, 0.000000e+00 sec cpu, 264.000 KB peak_rss
>>> average overhead of 1596 unique measurements and 1596 total measurements (mode::basic_pointer) : 1.472000e-06 sec wall, 0.000000e+00 sec cpu, 0.165 KB peak_rss
[INFO]> L1 cache size: 32 KB, L2 cache size: 262 KB, L3 cache size: 15728 KB, max cache size: 15728 KB
Expected size: 3222, actual size: 3219
[vol_cxt_swch]|0> Outputting 'timemory-ex-cxx-overhead-output/vol_cxt_swch.json'...
[vol_cxt_swch]|0> Outputting 'timemory-ex-cxx-overhead-output/vol_cxt_swch.txt'...
Opening 'timemory-ex-cxx-overhead-output/vol_cxt_swch.jpeg' for output...
Closed 'timemory-ex-cxx-overhead-output/vol_cxt_swch.jpeg'...