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Pondering a workstation build to process astro images + occassionally play games


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#41 Master_Scythe

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Posted 09 February 2017 - 10:41 AM

Its why I love the C12P by Noctua.

 

Not much matches that level of air cooling, AND cools your mobo components these days.....


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#42 Mac Dude

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Posted 09 February 2017 - 07:24 PM

i wouldnt bother with aio there expensive more prone to failure and loud for the level of performance they provide


Can you point me to some failure rate info?

The main reason I haven't looked at this myself is because if liquid cooling fails it can do more damage.

As for noise & performance, from what I've read it's only the very top end air solutions that stack up and, as I've experienced, they are very dependent on mobo layout.
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#43 g__day

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Posted 09 February 2017 - 08:07 PM

Mac Dude - on the storage side I would say you got that build right - pretty much what I was considering!


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#44 Dasa

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Posted 09 February 2017 - 10:26 PM

 

i wouldnt bother with aio there expensive more prone to failure and loud for the level of performance they provide


Can you point me to some failure rate info?

The main reason I haven't looked at this myself is because if liquid cooling fails it can do more damage.

As for noise & performance, from what I've read it's only the very top end air solutions that stack up and, as I've experienced, they are very dependent on mobo layout.

 

no failure rate info other than seeing a number of reports on forums of dead pumps and leaks
corsair has a good 5 year warranty on many of its aio which may also cover damaged parts
but i have never seen a hsf die just fans which aio use too and it usually takes a long time for cheap sleeve bearing fans let alone high quality ball bearing fans to die
 
there is some half decent cheaper hsf like cryorig h7 that fit just about anything a aio will the performance may fall a little behind but there still in front on noise
 
big hsf like nh-d15 can block the first pci-e slot on some mb although the nh-d15s gets around this and if you combine tall ram sinks with side panels close to the hsf hight limit you may have to forgo the second fan
 
 

g__day any idea what i need to do different to get comparable results with all cores in use with DeepSkyStacker?


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#45 g__day

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Posted 10 February 2017 - 03:29 PM

Dasa,

 

To be sure I understand your query re DSS correctly

 

1. If you are asking how to get performance data - you have to run the Windows Task Manager - DSS doesn't capture performance benchmark data

2. If you are asking are you using DSS correctly to create high load - I will be home Saturday night - will capture a workflow and my timings - but broadly I had described it from memory on the previous page, load one image multiple times - register and accept defaults - press go and monitor CPU / RAM / I/O usage and timings for 1-4 minutes, then do a simple adjust - rather than the colour sliders move the 6 sliders in the dim, mid and bright zones a bit left or right then press go and monitor again.

 

Cheers,  Matt


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#46 Dasa

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Posted 10 February 2017 - 03:57 PM

Dasa,

 

To be sure I understand your query re DSS correctly


2. If you are asking are you using DSS correctly to create high load - I will be home Saturday night - will capture a workflow and my timings - but broadly I had described it from memory on the previous page, load one image multiple times - register and accept defaults - press go and monitor CPU / RAM / I/O usage and timings for 1-4 minutes, then do a simple adjust - rather than the colour sliders move the 6 sliders in the dim, mid and bright zones a bit left or right then press go and monitor again.

 

Cheers,  Matt

thats basically what i did i think

made 10 copies of the image and loaded them all

but it only used one thread and processed the same image one after the other rather than all at once


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#47 g__day

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Posted 11 February 2017 - 09:33 AM

It will operate that way - choose the best image by star count and sky quality assessment - then add them one at a time. the adding should be done in grids linked to the number of cores. Quad core I posit the image is sliced into four and one quarter given to each core, sixteen cores - each images is slicesd into sixteen bits etc...
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#48 Dasa

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Posted 11 February 2017 - 02:15 PM

then add them one at a time. the adding should be done in grids

how? this is all i have been able to manage so far

 

dss.jpg

dss2.jpg


Edited by Dasa, 11 February 2017 - 02:18 PM.

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#49 g__day

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Posted 11 February 2017 - 09:01 PM

Wierd - when I try stacking just three frames all four cores go to 100% - and this is the same behaviour all my astronomer friends note.

 

The adding workload slicing across CPU cores has always been automatic - unless DSS has been set to have affinity = CPU0 - but I have never heard of that happening.  I tried screen grabs udring star registering and star stacking - all gave CPU at 100% for all four physical cores.  If you select the Luminance pane after the final image appears and move the slides and re-compute - that flogs all four of my CPUs too!

 

16716307_1369913569750475_58893225388621

 

16707624_1369897936418705_68330964125111


Edited by g__day, 11 February 2017 - 09:11 PM.

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#50 Dasa

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Posted 11 February 2017 - 10:01 PM

nope its affinity gives it access to all cores and it jumps about between them but never using more than one at a time

afraid im not familiar enough with the software to work out why its behaving this way for me


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#51 g__day

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Posted 12 February 2017 - 08:16 AM

So it's consistent across all its operations?  From the moment you press go and look at CPU usage you only see one core loaded throughout?  Will try it on my sons i5 and i7 cores on WIn 7 and WIn10 - but from memory yours is the first ever PC I have heard only using one core.  Will also ask on several astronomy forums and see what they can suggest.

 

Cheers Dasa


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#52 Dasa

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Posted 12 February 2017 - 09:13 AM

yeah it never loads more than one core

it couldnt be due to the image im using?


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#53 g__day

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Posted 12 February 2017 - 10:30 PM

Possibly most images would have the star fields move by a few pixels each shot given tracking isn't perfect or the mounts axis might not be orthogonal to the Earth's axis.

 

You could try ten frames and if you photoshoped then to shift the image around slightly but keep the same picture size (width and breadth) it would give DSS a bit more work to do.


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