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On 05/03/2018 08:57, Mike Horvath wrote:
> On 3/5/2018 3:24 AM, Stephen wrote:
>> On 05/03/2018 07:37, dick balaska wrote:
>>> On 03/05/2018 02:17 AM, Stephen wrote:
>>>> On 05/03/2018 06:38, dick balaska wrote:
>>>>> On 03/04/2018 08:53 PM, Mike Horvath wrote:
>>>>>> Is there a permanent way to set the processor affinity of the
>>>>>> POV-Ray render processes? I can do this Process Hacker, but as
>>>>>> soon as I minimize or exit Process Hacker, the changes are reversed.
>>>>>>
>>>>>> I would like to still be able to use my computer for other stuff
>>>>>> while rendering, and setting the render priority isn't always enough.
>>>>>>
>>>>>>
>>>>>> Mike
>>>>>
>>>>> I always set it from Task Manager. Right click on the process and
>>>>> you can change its affinity and priority.
>>>>>
>>>>
>>>> Task Manager works well for Windoze and Pov retains the affinity
>>>> settings when it is closed but I have a feeling Mike uses Linux.
>>>>
>>>
>>> Ah.
>>>
>>> Wait. Why post this question in the windows group then? ;)
>>>
>>
>> Oh! That's a duh on my part. :-(
>>
>
> Yeah, I meant Windows. But thanks for the help!
>
I was up far too early this morning, 2 am.
--
Regards
Stephen
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On 3/5/2018 4:11 AM, Stephen wrote:
> One other thought, only slightly relevant.
>
> If, toward the end of rendering a frame, you find that you are waiting
> for one or two blocks to finish. Setting Render_Block_Size to a smallish
> value allows all of your cores to work on the blocks instead of being
> idle. I generally use +BS8
>
> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>
Nice tip! Thanks!
Mike
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On 05/03/2018 09:57, Mike Horvath wrote:
> On 3/5/2018 4:11 AM, Stephen wrote:
>> One other thought, only slightly relevant.
>>
>> If, toward the end of rendering a frame, you find that you are waiting
>> for one or two blocks to finish. Setting Render_Block_Size to a
>> smallish value allows all of your cores to work on the blocks instead
>> of being idle. I generally use +BS8
>>
>> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>>
>>
>
>
> Nice tip! Thanks!
>
>
My pleasure. :-D
It is handy if there are lots of reflections and or media.
--
Regards
Stephen
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On 03/05/2018 04:11 AM, Stephen wrote:
> On 05/03/2018 08:55, Mike Horvath wrote:
>> On 3/5/2018 3:51 AM, Thomas de Groot wrote:
>>> On 5-3-2018 9:49, Thomas de Groot wrote:
>>> I probably should have written "threads" instead of "cores". ;-)
>>>
>>
>> Wow, +wt is even better!!
>>
>> The docs mention threads and cores. But some CPUs have 2 threads per
>> core, correct?
>>
>>
>>
>
> Yes my i7 CPU has 6 cores and 12 threads.
>
> One other thought, only slightly relevant.
>
> If, toward the end of rendering a frame, you find that you are waiting
> for one or two blocks to finish. Setting Render_Block_Size to a smallish
> value allows all of your cores to work on the blocks instead of being
> idle. I generally use +BS8
>
> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>
I have been grooving on Render_Pattern=3 lately. This causes the middle
of the pic to be rendered first, which is usually where the heavy blocks
will live. It's also good for preview.
I was doing +wt6 for awhile. I agree leaving only 2 threads is
sufficient to have a responsive computer. But I preferred to run +wt8
and then turn off 2 POV-Ray threads with Task Manager while using the
computer, and then turning them back on when done.
But, now I run Ubuntu and I have no control over affinity and priority
anyway. ;)
--
dik
Rendered 920576 of 921600 pixels (99%)
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On 05/03/2018 11:31, dick balaska wrote:
>
> I have been grooving on Render_Pattern=3 lately. This causes the middle
> of the pic to be rendered first, which is usually where the heavy blocks
> will live. It's also good for preview.
>
Hmm! Something to remember.
> I was doing +wt6 for awhile. I agree leaving only 2 threads is
> sufficient to have a responsive computer. But I preferred to run +wt8
> and then turn off 2 POV-Ray threads with Task Manager while using the
> computer, and then turning them back on when done.
>
I find that keeping the priority setting in PovRay at normal. PovRay
gives up CPU ticks whenever I need them. Only when I use another CPU
intensive process. Do I use affinity.
> But, now I run Ubuntu and I have no control over affinity and priority
> anyway. ;)
There's where my confusion arose. I got you and Mike mixed up.
Sorry both of you. :$
--
Regards
Stephen
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On 5-3-2018 10:11, Stephen wrote:
> On 05/03/2018 08:55, Mike Horvath wrote:
>> On 3/5/2018 3:51 AM, Thomas de Groot wrote:
>>> On 5-3-2018 9:49, Thomas de Groot wrote:
>>> I probably should have written "threads" instead of "cores". ;-)
>>>
>>
>> Wow, +wt is even better!!
>>
>> The docs mention threads and cores. But some CPUs have 2 threads per
>> core, correct?
>>
>>
>>
>
> Yes my i7 CPU has 6 cores and 12 threads.
I am always unsure about these things. I think my i7 CPU has one core
and 8 threads. As far as I know...
>
> One other thought, only slightly relevant.
>
> If, toward the end of rendering a frame, you find that you are waiting
> for one or two blocks to finish. Setting Render_Block_Size to a smallish
> value allows all of your cores to work on the blocks instead of being
> idle. I generally use +BS8
>
> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>
Ah, yes! That might be very relevant indeed. Thanks!
--
Thomas
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On 05/03/2018 12:18, Thomas de Groot wrote:
> On 5-3-2018 10:11, Stephen wrote:
>> On 05/03/2018 08:55, Mike Horvath wrote:
>>> On 3/5/2018 3:51 AM, Thomas de Groot wrote:
>>>> On 5-3-2018 9:49, Thomas de Groot wrote:
>>>> I probably should have written "threads" instead of "cores". ;-)
>>>>
>>>
>>> Wow, +wt is even better!!
>>>
>>> The docs mention threads and cores. But some CPUs have 2 threads per
>>> core, correct?
>>>
>>>
>>>
>>
>> Yes my i7 CPU has 6 cores and 12 threads.
>
> I am always unsure about these things. I think my i7 CPU has one core
> and 8 threads. As far as I know...
>
It is generally 2 threads per core.
http://www.expertreviews.co.uk/pcs/cpus/1400962/whats-the-difference-between-core-i3-i5-and-i7-processors
>>
>> One other thought, only slightly relevant.
>>
>> If, toward the end of rendering a frame, you find that you are waiting
>> for one or two blocks to finish. Setting Render_Block_Size to a
>> smallish value allows all of your cores to work on the blocks instead
>> of being idle. I generally use +BS8
>>
>> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>>
>>
>
> Ah, yes! That might be very relevant indeed. Thanks!
>
Sorry if I did not mention it when we were working on Dhalgren? .
I leave +BS8 in the command line box. It is persistent and is there
whenever I start Pov 3.7. Unless I delete or change it.
--
Regards
Stephen
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Le 18-03-04 à 20:53, Mike Horvath a écrit :
> Is there a permanent way to set the processor affinity of the POV-Ray
> render processes? I can do this Process Hacker, but as soon as I
> minimize or exit Process Hacker, the changes are reversed.
>
> I would like to still be able to use my computer for other stuff while
> rendering, and setting the render priority isn't always enough.
>
>
> Mike
You can set the working treads number to something less than the number
of cores on your system. You can use +wt# for that purpose.
Say, you have an 8 cores processor, you can add +wt7 or +wt6 to liberate
1 or 2 cores for other tasks.
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Le 18-03-05 à 07:48, Stephen a écrit :
> On 05/03/2018 12:18, Thomas de Groot wrote:
>> On 5-3-2018 10:11, Stephen wrote:
>>> On 05/03/2018 08:55, Mike Horvath wrote:
>>>> On 3/5/2018 3:51 AM, Thomas de Groot wrote:
>>>>> On 5-3-2018 9:49, Thomas de Groot wrote:
>>>>> I probably should have written "threads" instead of "cores". ;-)
>>>>>
>>>>
>>>> Wow, +wt is even better!!
>>>>
>>>> The docs mention threads and cores. But some CPUs have 2 threads per
>>>> core, correct?
>>>>
>>>>
>>>>
>>>
>>> Yes my i7 CPU has 6 cores and 12 threads.
>>
>> I am always unsure about these things. I think my i7 CPU has one core
>> and 8 threads. As far as I know...
>>
> It is generally 2 threads per core.
>
>
http://www.expertreviews.co.uk/pcs/cpus/1400962/whats-the-difference-between-core-i3-i5-and-i7-processors
>
>
>
>>>
>>> One other thought, only slightly relevant.
>>>
>>> If, toward the end of rendering a frame, you find that you are
>>> waiting for one or two blocks to finish. Setting Render_Block_Size to
>>> a smallish value allows all of your cores to work on the blocks
>>> instead of being idle. I generally use +BS8
>>>
>>> http://wiki.povray.org/content/Reference:Tracing_Options#Render_Block_Size
>>>
>>>
>>
>> Ah, yes! That might be very relevant indeed. Thanks!
>>
>
> Sorry if I did not mention it when we were working on Dhalgren? .
>
> I leave +BS8 in the command line box. It is persistent and is there
> whenever I start Pov 3.7. Unless I delete or change it.
>
You also can set it in povray.ini.
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On 3/5/2018 6:31 AM, dick balaska wrote:
> I have been grooving on Render_Pattern=3 lately. This causes the middle
> of the pic to be rendered first, which is usually where the heavy blocks
> will live. It's also good for preview.
>
> I was doing +wt6 for awhile. I agree leaving only 2 threads is
> sufficient to have a responsive computer. But I preferred to run +wt8
> and then turn off 2 POV-Ray threads with Task Manager while using the
> computer, and then turning them back on when done.
>
> But, now I run Ubuntu and I have no control over affinity and priority
> anyway. ;)
>
A spiral render pattern might be nice. That way, the center regions of
the screen get rendered first.
Mike
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