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engines - ebench

This example provides benchmarking support for evaluating the performance of threaded engine creation and destroying. Currently it runs on ECLiPSe, SWI-Prolog, and XVM. It should run also on YAP if and when this system threads bugs are fixed.

Confirm that the time/1 predicate is available:

time(true).

Print Logtalk, Prolog backend, and kernel versions (if running as a notebook):

%versions

Load the example:

logtalk_load(ebench(loader)).

First, an example with an engine goal that succeeds deterministically:

time((between(1,2000,I),atom_number(A,I),threaded_engine_create(_,true,A),fail)).

time((between(1,2000,I),atom_number(A,I),threaded_engine_destroy(A),fail)).

Second, an example with an engine goal that provides an infinite stream of solutions:

time((between(1,2000,I),atom_number(A,I),threaded_engine_create(_,repeat,A),fail)).

time((between(1,2000,I),atom_number(A,I),threaded_engine_destroy(A),fail)).

Finally, an example with an engine running a loop predicate using the engine term queue:

assertz((loop :- threaded_engine_fetch(_),loop)).

time((between(1,2000,I),atom_number(A,I),threaded_engine_create(_,loop,A),fail)).

time((between(1,2000,I),atom_number(A,I),threaded_engine_destroy(A),fail)).