[Developers] admb threading

[Matthew Supernaw]

I misinterpreted your joke, I apologize.  How about we agree to be polite and continue?

Would a global mutex lock on the gradient_structure work?

If it would work, what is more costly copying data into a master/slave paradigm or having an operational bottle neck at the gradient_structure?

On Dec 4, 2012, at 4:46 PM, dave fournier wrote:

> On 12-12-04 01:15 PM, Matthew Supernaw wrote:
>> Which book,  "Concurrent Programming for Procedural Programmers"?
> 
> Its usually called a joke.  I was referring to the code in my example.
> 
>> 
>> Anyway,  lets step through the logic of:
>> 
>> prevariable& operator+(const prevariable& v1, const prevariable& v2)
>> 
>> 
>> you have a call to:
>> 
>> gradient_structure::GRAD_STACK1->set_gradient_stack4(void(*),double*,double*double*)
> 
> Go ahead. Do what you want.
>> and then:
>> 
>> default_evaluation4()
>> 
>> Why can't there be a mutex lock on gradient_structure?
>> 
>> 
>> 
>> 
>> 
>> On Dec 4, 2012, at 3:00 PM, developers-request at admb-project.org wrote:
>> 
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>>> Message: 1
>>> Date: Tue, 04 Dec 2012 11:56:50 -0800
>>> From: dave fournier <davef at otter-rsch.com>
>>> To: developers at admb-project.org
>>> Subject: Re: [Developers] admb threading
>>> Message-ID: <50BE5582.3000002 at otter-rsch.com>
>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>> 
>>> Read the book!
>>> 
>>> A way to synchronize is in my example referred to earlier. Of course
>>> that is
>>> just for dvariables. For df1b2 variables there is a lot more structure,
>>> but the ideas
>>> would be the same.
>>> 
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