Timing Test for Multi-Threaded atomic

multi_atomic_two_time

@(@\newcommand{\W}[1]{ \; #1 \; } \newcommand{\R}[1]{ {\rm #1} } \newcommand{\B}[1]{ {\bf #1} } \newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} } \newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} } \newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} } \newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }@)@This is cppad-20221105 documentation. Here is a link to its current documentation . Timing Test for Multi-Threaded atomic_two Calculation
Syntax

ok = multi_atomic_two_time(

    time_out, test_time, num_threads, num_solve

)

Thread
It is assumed that this function is called by thread zero in sequential mode; i.e., not in_parallel .

time_out
This argument has prototype



    double& time_out

Its input value of the argument does not matter. Upon return it is the number of wall clock seconds used by multi_atomic_two_run .

test_time
This argument has prototype



    double test_time

and is the minimum amount of wall clock time that the test should take. The number of repeats for the test will be increased until this time is reached. The reported time_out is the total wall clock time divided by the number of repeats.

num_threads
This argument has prototype



    size_t num_threads

It specifies the number of threads that are available for this test. If it is zero, the test is run without the multi-threading environment and



    1 == thread_alloc::num_threads()

If it is non-zero, the test is run with the multi-threading and



    num_threads = thread_alloc::num_threads()

num_solve
This specifies the number of square roots that will be solved for.

ok
The return value has prototype



    bool ok

If it is true, harmonic_time passed the correctness test and multi_atomic_two_time did not detect an error. Otherwise it is false.

Input File: example/multi_thread/multi_atomic_two.cpp