Is ghost multi-threaded?

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Linas Vepstas

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Feb 26, 2019, 2:53:57 PM2/26/19
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Quick, but maybe hard question: is ghost multi-threaded?

Specifically, does ghost ever run several BindLinks or GetLinks in parallel, in different threads?  (That's the important question I want to know about)   How about PLN, URE or pattern miner?

If there is multi-threading, are you using ParallelLink, JoinLink, or are you using roll-your-own home-made threading?

I want to make some design changes, but do not want to mess up current users/systems. https://github.com/opencog/atomspace/issues/1502

-- Linas

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amebel@hr

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Feb 26, 2019, 10:18:44 PM2/26/19
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Ghost uses openpsi loops. These are atomspace recursive calls running in a scheme thread. 

Linas Vepstas

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Feb 26, 2019, 11:27:06 PM2/26/19
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On Tue, Feb 26, 2019 at 9:18 PM amebel@hr <am...@hansonrobotics.com> wrote:
Ghost uses openpsi loops. These are atomspace recursive calls running in a scheme thread. 

But is this one thread. or more than one thread? (I'm not asking about any threads that you might now know about. There are a few, in the logger, in the persistence backend; I'm not worried about those.)

--linas

On Wednesday, February 27, 2019 at 3:53:57 AM UTC+8, linas wrote:
Quick, but maybe hard question: is ghost multi-threaded?

Specifically, does ghost ever run several BindLinks or GetLinks in parallel, in different threads?  (That's the important question I want to know about)   How about PLN, URE or pattern miner?

If there is multi-threading, are you using ParallelLink, JoinLink, or are you using roll-your-own home-made threading?

I want to make some design changes, but do not want to mess up current users/systems. https://github.com/opencog/atomspace/issues/1502

-- Linas

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cassette tapes - analog TV - film cameras - you

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Leung Man Hin

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Feb 26, 2019, 11:34:11 PM2/26/19
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Should be one thread, there are no BindLinks/GetLinks that run in parallel.

To view this discussion on the web visit https://groups.google.com/d/msgid/opencog/CAHrUA37ngtPrpie3kYQzv0%2BcZk51SnyRLqNjr6P%2B735S8bDFMQ%40mail.gmail.com.

Linas Vepstas

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Feb 26, 2019, 11:39:50 PM2/26/19
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OK. FYI, if you ever wanted to, you can run them in parallel; always could. I'm currently tweaking things to make this easier. (The suggested way would be to use JoinLink. Or ParallelLink. and if this is too complicated, don't bother, unless you've got some kind of responsiveness issue or something.

--linas

To view this discussion on the web visit https://groups.google.com/d/msgid/opencog/CAMfi0B%2B9OvN05Fhahcs36V2Sxbvcrc_BXFq1iTO8H_xnUBH2xg%40mail.gmail.com.

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