[Sidefx-houdini-list] VEX SOP threading

P. Alex Lim list at poh-yee.com
Thu Jul 17 10:28:27 EDT 2008


Hi Peter, Hi Simons,

Thank you for the heads up on the possible issue with other operations 
such as the point cloud! :) Much appreciated! This will save me some 
headaches! :)

Take care,
Alex


Simon Kapeniak wrote:
> I can confirm that operations on point clouds make troubles for threading
> (what is apparently mentioned in Help). Besides those cases VEX works for me
> fine in MT mode.
>
> 2008/7/17 Simon Barrick <simon at primalpictures.com>:
>
>   
>> I've seen problems using point clouds but not other things, why not just
>> try and see? If the result is the same as one thread then you're good to
>> go.
>>
>> -----Original Message-----
>> From: sidefx-houdini-list-bounces at sidefx.com
>> [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Peter
>> Bowmar
>> Sent: 17 July 2008 05:04
>> To: sidefx-houdini-list at sidefx.com
>> Subject: Re: [Sidefx-houdini-list] VEX SOP threading
>>
>> Hey Alex,
>>
>> I've seen trouble with VEX SOP Threading as recently as 9.1 (incorrect
>> results) so I'd urge caution on that...
>>
>> Cheers,
>>
>> Peter B
>>
>> 2008/7/16 P. Alex Lim <list at poh-yee.com>:
>>     
>>> Hi everyone.
>>>
>>> Is the threading in VEX SOP pretty safe to use these days? I have a
>>> large set of data where without threading took about 490-550ms to
>>> process. After I changed the option to "1 per processor" or "4
>>> threads", the processing time dropped to ~250ms. Pretty cool.
>>>
>>> Anyways, had to ask because I seemed to still had it in mind from long
>>>       
>>> long time ago to not change this or I'd be asking for trouble...
>>>
>>> Much thanks!
>>> Alex
>>>
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>>>       
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