8-Queens Benchmark
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01-06-2017, 04:00 PM
(This post was last modified: 01-06-2017 06:30 PM by rprosperi.)
Post: #30
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RE: 8-Queens Benchmark
(01-06-2017 02:23 PM)xerxes Wrote: May be someone knows, if there is a significant speed difference between the 2 versions of Forth for the 71B. It appears the 41 Translator core of Forth (2A) was tweaked considerably, as it is notably faster than version 1A. This is surprising, as it is ostensibly basically the original version with some custom Forth words to let it "run" HP-41 Programs. 41 Translator Forth (2A): 46.3 (from prior results) 71 Forth (1A): 55.02 (avg 3 runs, FRAM, time adj. to remove time spent in timer code) 71 Forth (1A): 55.18 (avg 3 runs, RAM, time adj. to remove time spent in timer code) Good question, with somewhat surprising result. Retesting Forth 2A with the identical code and conditions used for 1A above confirms the 2A version is faster. Note 1: the original code used a Trans41-specific CLOCK command to time the loop; above 1A and this 2A test used same timing code. Note 2: In all test cases, HP-IL was connected to loop, but with no I/O in the queens test, this makes no difference (confirmed). 41 Translator Forth (2A): 45.14 (avg 3 runs, RAM, time adj. to remove time spent in timer code). Thanks for asking Xerxes --Bob Prosperi |
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