Re: Toy computational "benchmark" in Ada (new blog post)

[Paul Rubin <no.email@nospam.invalid>]

David Trudgett <dktrudgett@gmail.com> writes:
> Thanks, Jeff! I have put the code into a public-accessible Gitlab repo here:

I managed to build this with GNAT 6.3.0 on an Intel i5-3570S (3.4 GHz)
with 16GB of memory.  Results:

    SINGLE-THREADED V2
    Data points    :  1024000000
    Sum of squares :  1.01064747680946E+10
    Duration (ms)  :  2456.406644100

    MULTI-THREADED V2
    Data points    :  1024000000
    Worker tasks   :  4
    Sum of squares :  1.01064749025115E+10
    Duration (ms)  :  689.120666560

I don't know what those ms durations measure.  Actual elapsed times were
2 min 5 sec for the single threaded version and 36.484s for the parallel
version.  The reported usermode cpu times were 2m3.2s for the single
threaded version and 2m18s (across the 4 cores) for the parallel version.

I'll see if I can code and time a C++ version.