Indigo and CPU (multi CPUs) speed

[Adam Guzowski]

I figure that while rendering under Indigo all my CPUs never rich full load
It daesnt matter if Multithreading is on or off. CPU load reach 40-70%.

Any ideas why

?

[psor]

Heya Adam!

How many cores do you have? If you've got two cores try to use three
threads instead of two. Just my two cents. ;o)



take care
psor

[Adam Guzowski]

I try... thanks

[SmartDen]

Hmm... It's strange. When I start indigo with -t 2 Option, both cores get full load.
Another way to load all CPUs is start a network render on localhost. It should be work too.

[zsouthboy]

I don't have such an issue, on multiple machines that i've used indigo on.

Two threads gives me 100% just fine.


Is it possible you have an Intel CPU and you have hyperthreading turned on?

[eman7613]

i have noticed, that after indego updates the picturee cpu usage drops a bit

[psor]

i have noticed, that after indego updates the picturee cpu usage drops a bit

Hmm, ... so maybe Adam has set the "image save interval" to short. I set
it to ~120 seconds or more. I would say ~20 seconds is not that productive. ;o)


take care
psor

[CTZn]

Mmm I have 2 cpus here, and did test w/ w/o hyperthrading to compare and in both cases (2/4 threads) Indigo was taking 100% ressources all the time. render time was 20% faster w/ HT (that is 20% more mutations in the same period of time).

[delic]

with a p4 HT, I can launch two renders and having 100% cpu ...
But never understood how to render one scene with 2 threads enabled ...

[zsouthboy]

delic: start indigo.exe with a "-t x", where x is the number of threads to use.

example:


indigo.exe example.xml -t 2


would start rendering example.xml with two threads

[CTZn]

Alternatively, you can do it the xml way:

Code: Select all

<renderer_settings>
                ...
	<num_threads>#</num_threads>
                ...
</renderer_settings>

where # is the number of thread. To be placed anywhere inside the <renderer_settings> tag.

[YaroslavL]

I have Better way!
Just once edit initfile.txt file
"num_threads" "2" for dual core or HT

[CTZn]

Depends on what is better for you. At the beginning I was doing so, but sometimes I dont want to put the 2 procs in a render, sometimes I need 4 because I activated HT, so I found it "better" to set this on a scene basis

This is an alternate way, yes it is !

[filippo]

I have testing it.
During the exportation the cpu (1 o 2 cpu or ht)work approximately at the 40%\50%...during the rendering indigo work at 100%...(with 2 cpu or ht on)

I l'ho testato.
durante l'esportazione le cpu( 1 o 2 che siano) lavorano al 50 %, durante il rendering indigo lavora al 100% (con 2 cpu o ht attivato)