Jonathan R. Madsen
a142b2029d
* Fix the main library stop routine for timemory - the main pop_timemory function was popping too many calls - this primarily affected recursive calls * Lengthen the timeout for the Configure CMake step * Fix python tests - new validate-timemory-json.py script * Documentation update - Call-counts in timemory output examples in documentation were affected by the changes * Fix the per-thread metrics during finalization - pthread_create_mutex starts/stops the per-thread data - removed unintentional continue statement * Docs tweaks * Fix lap counter on per-thread metrics
233 라인
17 KiB
Markdown
233 라인
17 KiB
Markdown
# User API
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```eval_rst
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.. doxygenfile:: omnitrace/user.h
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```
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By default, when omnitrace detects any `omnitrace_user_start_*` or `omnitrace_user_stop_*` function, instrumentation
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is disabled at start-up -- thus, `omnitrace_user_stop_trace()` is not required at the beginning of main. This is
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can be manually controlled via the `OMNITRACE_INIT_ENABLED` environment variable. User-defined regions are always
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recorded, regardless of whether whether `omnitrace_user_start_*` or `omnitrace_user_stop_*` has been called.
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## Example
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### User API Implementation
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```cpp
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#include <omnitrace/user.h>
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#include <atomic>
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#include <cassert>
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#include <cstdio>
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#include <cstdlib>
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#include <sstream>
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#include <thread>
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#include <vector>
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std::atomic<long> total{ 0 };
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long
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fib(long n) __attribute__((noinline));
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void
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run(size_t nitr, long) __attribute__((noinline));
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int
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custom_push_region(const char* name);
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namespace
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{
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int (*omnitrace_push_region_f)(const char*) = nullptr;
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}
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int
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main(int argc, char** argv)
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{
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// get the internal callback to start a user-defined region
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omnitrace_user_get_callbacks(OMNITRACE_USER_REGION, (void**) &omnitrace_push_region_f,
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nullptr);
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// assign the custom callback to start a user-defined region
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if(omnitrace_push_region_f)
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omnitrace_user_configure(OMNITRACE_USER_REGION, (void*) &custom_push_region,
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nullptr);
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omnitrace_user_push_region(argv[0]);
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omnitrace_user_push_region("initialization");
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size_t nthread = std::min<size_t>(16, std::thread::hardware_concurrency());
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size_t nitr = 50000;
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long nfib = 10;
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if(argc > 1) nfib = atol(argv[1]);
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if(argc > 2) nthread = atol(argv[2]);
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if(argc > 3) nitr = atol(argv[3]);
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omnitrace_user_pop_region("initialization");
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printf("[%s] Threads: %zu\n[%s] Iterations: %zu\n[%s] fibonacci(%li)...\n", argv[0],
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nthread, argv[0], nitr, argv[0], nfib);
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omnitrace_user_push_region("thread_creation");
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std::vector<std::thread> threads{};
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threads.reserve(nthread);
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// disable instrumentation for child threads
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omnitrace_user_stop_thread_trace();
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for(size_t i = 0; i < nthread; ++i)
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{
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size_t _nitr = ((i % 2) == 1) ? (nitr - (0.1 * nitr)) : (nitr + (0.1 * nitr));
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long _nfib = ((i % 2) == 1) ? (nfib - (0.1 * nfib)) : (nfib + (0.1 * nfib));
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threads.emplace_back(&run, _nitr, _nfib);
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}
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// re-enable instrumentation
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omnitrace_user_start_thread_trace();
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omnitrace_user_pop_region("thread_creation");
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omnitrace_user_push_region("thread_wait");
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for(auto& itr : threads)
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itr.join();
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omnitrace_user_pop_region("thread_wait");
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run(nitr, nfib);
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printf("[%s] fibonacci(%li) x %lu = %li\n", argv[0], nfib, nthread, total.load());
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omnitrace_user_pop_region(argv[0]);
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return 0;
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}
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long
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fib(long n)
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{
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return (n < 2) ? n : fib(n - 1) + fib(n - 2);
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}
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#define RUN_LABEL \
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std::string{ std::string{ __FUNCTION__ } + "(" + std::to_string(n) + ") x " + \
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std::to_string(nitr) } \
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.c_str()
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void
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run(size_t nitr, long n)
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{
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omnitrace_user_push_region(RUN_LABEL);
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long local = 0;
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for(size_t i = 0; i < nitr; ++i)
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local += fib(n);
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total += local;
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omnitrace_user_pop_region(RUN_LABEL);
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}
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int
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custom_push_region(const char* name)
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{
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printf("Pushing custom region :: %s\n", name);
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return (*omnitrace_push_region_f)(name);
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}
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```
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### User API Output
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```console
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$ omnitrace -l --min-instructions=8 -E custom_push_region -o -- ./user-api
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...
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$ export OMNITRACE_USE_TIMEMORY=ON
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$ export OMNITRACE_USE_PID=OFF
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$ export OMNITRACE_TIME_OUTPUT=OFF
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$ export OMNITRACE_OUTPUT_PATH=omnitrace-example-output
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$ ./user-api.inst 20 4 100
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Pushing custom region :: ./user-api.inst
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[omnitrace][omnitrace_init_tooling] Instrumentation mode: Trace
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______ .___ ___. .__ __. __ .___________..______ ___ ______ _______
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/ __ \ | \/ | | \ | | | | | || _ \ / \ / || ____|
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| | | | | \ / | | \| | | | `---| |----`| |_) | / ^ \ | ,----'| |__
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| | | | | |\/| | | . ` | | | | | | / / /_\ \ | | | __|
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| `--' | | | | | | |\ | | | | | | |\ \----./ _____ \ | `----.| |____
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\______/ |__| |__| |__| \__| |__| |__| | _| `._____/__/ \__\ \______||_______|
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Pushing custom region :: initialization
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[./user-api.inst] Threads: 4
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[./user-api.inst] Iterations: 100
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[./user-api.inst] fibonacci(20)...
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Pushing custom region :: thread_creation
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Pushing custom region :: thread_wait
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Pushing custom region :: run(20) x 100
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Pushing custom region :: run(20) x 100
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Pushing custom region :: run(20) x 100
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Pushing custom region :: run(20) x 100
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Pushing custom region :: run(20) x 100
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[./user-api.inst] fibonacci(20) x 4 = 3382500
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[omnitrace][86267][0][omnitrace_finalize] finalizing...
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[omnitrace][86267][0] omnitrace : 5.190895 sec wall_clock, 2.748 mb peak_rss, 6.330000 sec cpu_clock, 121.9 % cpu_util [laps: 1]
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[omnitrace][86267][0] user-api.inst/thread-0 : 5.078713 sec wall_clock, 4.722415 sec thread_cpu_clock, 93.0 % thread_cpu_util, 1.276 mb peak_rss [laps: 1]
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[omnitrace][86267][0] user-api.inst/thread-1 : 0.322248 sec wall_clock, 0.322191 sec thread_cpu_clock, 100.0 % thread_cpu_util, 1.000 mb peak_rss [laps: 1]
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[omnitrace][86267][0] user-api.inst/thread-2 : 0.323255 sec wall_clock, 0.323194 sec thread_cpu_clock, 100.0 % thread_cpu_util, 0.000 mb peak_rss [laps: 1]
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[omnitrace][86267][0] user-api.inst/thread-3 : 0.323569 sec wall_clock, 0.323484 sec thread_cpu_clock, 100.0 % thread_cpu_util, 1.092 mb peak_rss [laps: 1]
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[omnitrace][86267][0] user-api.inst/thread-4 : 0.324178 sec wall_clock, 0.324057 sec thread_cpu_clock, 100.0 % thread_cpu_util, 1.184 mb peak_rss [laps: 1]
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[omnitrace][86267][0] Post-processing 51 cpu frequency and memory usage entries...
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[omnitrace][wall_clock]|0> Outputting 'omnitrace-user-api.inst-output/wall_clock.json'...
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[omnitrace][wall_clock]|0> Outputting 'omnitrace-user-api.inst-output/wall_clock.tree.json'...
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[omnitrace][wall_clock]|0> Outputting 'omnitrace-user-api.inst-output/wall_clock.txt'...
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[omnitrace][manager::finalize][metadata]> Outputting 'omnitrace-user-api.inst-output/metadata.json' and 'omnitrace-user-api.inst-output/functions.json'...
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[omnitrace][86267][0][omnitrace_finalize] Finalized
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$ cat omnitrace-example-output/wall_clock.txt
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| REAL-CLOCK TIMER (I.E. WALL-CLOCK TIMER) |
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| LABEL | COUNT | DEPTH | METRIC | UNITS | SUM | MEAN | MIN | MAX | VAR | STDDEV | % SELF |
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|---------------------------------------------------------------------------------|--------|--------|------------|--------|----------|----------|----------|----------|----------|----------|--------|
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| |0>>> ./user-api.inst | 1 | 0 | wall_clock | sec | 5.078521 | 5.078521 | 5.078521 | 5.078521 | 0.000000 | 0.000000 | 0.0 |
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| |0>>> |_initialization | 1 | 1 | wall_clock | sec | 0.000004 | 0.000004 | 0.000004 | 0.000004 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_thread_creation | 1 | 1 | wall_clock | sec | 0.000159 | 0.000159 | 0.000159 | 0.000159 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_thread_wait | 1 | 1 | wall_clock | sec | 0.355307 | 0.355307 | 0.355307 | 0.355307 | 0.000000 | 0.000000 | 0.0 |
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| |0>>> |_std::vector<std::thread, std::allocator<std::thread> >::begin | 1 | 2 | wall_clock | sec | 0.000001 | 0.000001 | 0.000001 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::vector<std::thread, std::allocator<std::thread> >::end | 1 | 2 | wall_clock | sec | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_pthread_join | 4 | 2 | wall_clock | sec | 0.355257 | 0.088814 | 0.000001 | 0.333144 | 0.026559 | 0.162970 | 100.0 |
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| |2>>> |_start_thread | 1 | 3 | wall_clock | sec | 0.000032 | 0.000032 | 0.000032 | 0.000032 | 0.000000 | 0.000000 | 100.0 |
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| |1>>> |_start_thread | 1 | 3 | wall_clock | sec | 0.000036 | 0.000036 | 0.000036 | 0.000036 | 0.000000 | 0.000000 | 100.0 |
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| |3>>> |_start_thread | 1 | 3 | wall_clock | sec | 0.000034 | 0.000034 | 0.000034 | 0.000034 | 0.000000 | 0.000000 | 100.0 |
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| |4>>> |_start_thread | 1 | 3 | wall_clock | sec | 0.000039 | 0.000039 | 0.000039 | 0.000039 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_run | 1 | 1 | wall_clock | sec | 4.722993 | 4.722993 | 4.722993 | 4.722993 | 0.000000 | 0.000000 | 0.0 |
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| |0>>> |_std::char_traits<char>::length | 1 | 2 | wall_clock | sec | 0.000001 | 0.000001 | 0.000001 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::distance<char const*> | 1 | 2 | wall_clock | sec | 0.000001 | 0.000001 | 0.000001 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::operator+<char, std::char_traits<char>, std::allocator<char> > | 2 | 2 | wall_clock | sec | 0.000002 | 0.000001 | 0.000001 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_run(20) x 100 | 1 | 2 | wall_clock | sec | 4.722951 | 4.722951 | 4.722951 | 4.722951 | 0.000000 | 0.000000 | 0.0 |
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| |0>>> |_run [{94,25}-{96,25}] | 1 | 3 | wall_clock | sec | 4.722925 | 4.722925 | 4.722925 | 4.722925 | 0.000000 | 0.000000 | 0.0 |
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| |0>>> |_fib | 100 | 4 | wall_clock | sec | 4.722718 | 0.047227 | 0.046713 | 0.051987 | 0.000000 | 0.000625 | 0.0 |
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| |0>>> |_fib | 200 | 5 | wall_clock | sec | 4.722302 | 0.023612 | 0.017827 | 0.034091 | 0.000032 | 0.005627 | 0.0 |
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| |0>>> |_fib | 400 | 6 | wall_clock | sec | 4.721485 | 0.011804 | 0.006790 | 0.023003 | 0.000016 | 0.004024 | 0.0 |
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| |0>>> |_fib | 800 | 7 | wall_clock | sec | 4.719858 | 0.005900 | 0.002564 | 0.016078 | 0.000006 | 0.002498 | 0.1 |
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| |0>>> |_fib | 1600 | 8 | wall_clock | sec | 4.716572 | 0.002948 | 0.000977 | 0.011849 | 0.000002 | 0.001465 | 0.1 |
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| |0>>> |_fib | 3200 | 9 | wall_clock | sec | 4.709918 | 0.001472 | 0.000371 | 0.008246 | 0.000001 | 0.000831 | 0.3 |
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| |0>>> |_fib | 6400 | 10 | wall_clock | sec | 4.696775 | 0.000734 | 0.000140 | 0.005111 | 0.000000 | 0.000461 | 0.6 |
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| |0>>> |_fib | 12800 | 11 | wall_clock | sec | 4.670093 | 0.000365 | 0.000050 | 0.003166 | 0.000000 | 0.000253 | 1.1 |
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| |0>>> |_fib | 25600 | 12 | wall_clock | sec | 4.617496 | 0.000180 | 0.000017 | 0.001959 | 0.000000 | 0.000137 | 2.3 |
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| |0>>> |_fib | 51200 | 13 | wall_clock | sec | 4.512671 | 0.000088 | 0.000004 | 0.001212 | 0.000000 | 0.000074 | 4.6 |
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| |0>>> |_fib | 102400 | 14 | wall_clock | sec | 4.304142 | 0.000042 | 0.000000 | 0.000752 | 0.000000 | 0.000039 | 9.6 |
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| |0>>> |_fib | 202600 | 15 | wall_clock | sec | 3.892580 | 0.000019 | 0.000000 | 0.000469 | 0.000000 | 0.000021 | 19.0 |
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| |0>>> |_fib | 363200 | 16 | wall_clock | sec | 3.151143 | 0.000009 | 0.000000 | 0.000293 | 0.000000 | 0.000011 | 33.2 |
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| |0>>> |_fib | 502000 | 17 | wall_clock | sec | 2.105217 | 0.000004 | 0.000000 | 0.000183 | 0.000000 | 0.000006 | 49.1 |
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| |0>>> |_fib | 476000 | 18 | wall_clock | sec | 1.071652 | 0.000002 | 0.000000 | 0.000114 | 0.000000 | 0.000004 | 63.6 |
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| |0>>> |_fib | 294200 | 19 | wall_clock | sec | 0.390193 | 0.000001 | 0.000000 | 0.000071 | 0.000000 | 0.000003 | 75.3 |
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| |0>>> |_fib | 115200 | 20 | wall_clock | sec | 0.096190 | 0.000001 | 0.000000 | 0.000043 | 0.000000 | 0.000002 | 84.4 |
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| |0>>> |_fib | 27400 | 21 | wall_clock | sec | 0.015020 | 0.000001 | 0.000000 | 0.000025 | 0.000000 | 0.000001 | 91.1 |
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| |0>>> |_fib | 3600 | 22 | wall_clock | sec | 0.001336 | 0.000000 | 0.000000 | 0.000013 | 0.000000 | 0.000001 | 96.3 |
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| |0>>> |_fib | 200 | 23 | wall_clock | sec | 0.000050 | 0.000000 | 0.000000 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::char_traits<char>::length | 1 | 3 | wall_clock | sec | 0.000001 | 0.000001 | 0.000001 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::distance<char const*> | 1 | 3 | wall_clock | sec | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::operator+<char, std::char_traits<char>, std::allocator<char> > | 2 | 3 | wall_clock | sec | 0.000001 | 0.000001 | 0.000000 | 0.000001 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::operator& | 1 | 1 | wall_clock | sec | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> std::vector<std::thread, std::allocator<std::thread> >::~vector | 1 | 0 | wall_clock | sec | 0.000045 | 0.000045 | 0.000045 | 0.000045 | 0.000000 | 0.000000 | 32.7 |
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| |0>>> |_std::thread::~thread | 4 | 1 | wall_clock | sec | 0.000030 | 0.000007 | 0.000007 | 0.000009 | 0.000000 | 0.000001 | 31.2 |
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| |0>>> |_std::thread::joinable | 4 | 2 | wall_clock | sec | 0.000021 | 0.000005 | 0.000005 | 0.000006 | 0.000000 | 0.000001 | 89.4 |
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| |0>>> |_std::thread::id::id | 4 | 3 | wall_clock | sec | 0.000001 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::operator== | 4 | 3 | wall_clock | sec | 0.000001 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::allocator_traits<std::allocator<std::thread> >::deallocate | 1 | 1 | wall_clock | sec | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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| |0>>> |_std::allocator<std::thread>::~allocator | 1 | 1 | wall_clock | sec | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 0.000000 | 100.0 |
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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```
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