3 minutes ago, Ray Proudfoot said:

I turned HT off before running Asus Suite to overclock my CPU to 5.2 (3 cores) and (4.8) 3 cores.

Any suggestions?

When you install 5.3, look at the prepar3d.cfg.  I bet it will give you this:

AffinityMask = 63

P3DCoreAffinityMask = 63

MainThreadScheduler = 0
RenderThreadScheduler = 1
FrameWorkerThreadScheduler = 2

1 minute ago, kevinfirth said:

When you install 5.3, look at the prepar3d.cfg.  I bet it will give you this:

AffinityMask = 63

P3DCoreAffinityMask = 63

MainThreadScheduler = 0
RenderThreadScheduler = 1
FrameWorkerThreadScheduler = 2

Okay, so 63 equates to 111111 meaning all six cores are assigned.

For the three entries do those represent the priority for each scheduler? I’m guessing they would never be any different for any PC.

Is there anything in the documentation to explain all this?

4 minutes ago, Ray Proudfoot said:

I turned HT off before running Asus Suite to overclock my CPU to 5.2 (3 cores) and (4.8) 3 cores.

Any suggestions?

If you turn HT on:try

AffinityMask = 1365
P3DCoreAffinityMask = 1365

MainThreadScheduler = 0
RenderThreadScheduler = 2
FrameWorkerThreadScheduler = 4

That should replicate your initial HT off situation, with HT on.  Uses one logical core per physical core, so equivalent to HT off.

Then see if the following makes any difference:

AffinityMask = 3925
P3DCoreAffinityMask = 1365

MainThreadScheduler = 0
RenderThreadScheduler = 2
FrameWorkerThreadScheduler = 4

That introduces more cores into the overall AM, but keeps one logical core free for the sim on the first 4 physical cores.  It opens up 2 logical cores for addon dlls, on the last two physical cores, which may give you a bit better performance with the NGXu, or other similarly heavy on performance a/c.

However, with only 6 cores to play with, you may be limited as to how much benefit you can squeeze out of it.  Those last two cores may well end up with dlls and terrain threads competing for CPU time.

5 minutes ago, Ray Proudfoot said:

Okay, so 63 equates to 111111 meaning all six cores are assigned.

For the three entries do those represent the priority for each scheduler? I’m guessing they would never be any different for any PC.

Is there anything in the documentation to explain all this?

 

7 minutes ago, Ray Proudfoot said:

Okay, so 63 equates to 111111 meaning all six cores are assigned.

For the three entries do those represent the priority for each scheduler? I’m guessing they would never be any different for any PC.

Is there anything in the documentation to explain all this?

I have 10 physical cores, so Im going to try the following:

[JOBSCHEDULER]
AffinityMask=349525
P3DCoreAffinityMask=21845
MainThreadScheduler=0
RenderThreadScheduler=2
FrameWorkerThreadScheduler=4

That gives me the first three cores assigned solely to the 3 scheduler threads, 5x physical cores solely for terrain threads, and 2 physical cores for addons and dll's within the sim AM.

@kevinfirth, thanks for that and the links. It’s going to take a little while to try things and work out what is best for my CPU.

Maybe a different AF for the PMDG compared to my other aircraft. SimStarterNG will be handy for that.

I won’t be turning HT back on as it introduces extra heat making overclocking more risky.

5 minutes ago, Ray Proudfoot said:

it introduces extra heat

Extra heat = more work being done = greater performance

Depends where you need the performance most, HT off may give you a couple hundred MHz on the main core, but do you REALLY need that? Ask yourself would it be a better use of the CPU to take advantage of the HT to get more terrain threads working, reducing blurries etc? Your choice...

Edited December 2, 20214 yr by kevinfirth

25 minutes ago, Ikarus280 said:

So final verdict is basically a performance improvement in terms of FPS and fluidity with the traffic off?

I don't mind loosing the moving cars/motorcycles, so if this is the case I will reinstall on the weekend. 

I can confirm. With traffic (autos) off I get 75+ (unlimited) FPS at my home airport. With car traffic turned on it drops to 45 FPS. 
 

-B

I'm really going to have to take time to understand this as I have a Ryzen 3900X so getting the use out of all those cores will be a personally interest. Previously they were occupied with terrain rendering so I didn't get pop ups but moving the main thread around I am certainly interested in. 

Just now, kevinfirth said:

Extra heat = more work being done = greater performance

Extra heat increases the possibility of crash through overheating. Fans operating at 100% continuously is not something I relish.

I previously had my core0 at 4.7 with HT on. The remaining cores ran slower. Now with HT off I have 3 x 5.2 and 3 x 4.8.

4 minutes ago, btacon said:

I can confirm. With traffic (autos) off I get 75+ (unlimited) FPS at my home airport. With car traffic turned on it drops to 45 FPS. 
 

-B

Yeah for me...about a 33 percent dump in FPS, if even the slider is at 1 percent.  Has to be a bug...and will be fixed, I'm sure...

35 minutes ago, Ikarus280 said:

So final verdict is basically a performance improvement in terms of FPS and fluidity with the traffic off?

I don't mind loosing the moving cars/motorcycles, so if this is the case I will reinstall on the weekend. 

Yep...with it off, I jumped (with only that...) from 17-22 FPS ...to 32 FPS not much moving up or down as the flight progressed.

Edited December 2, 20214 yr by Sesquashtoo

I am getting the error that Simconnect 5.2 should be installed. I try to reinstall everything in the redist folder. No luck.

25 minutes ago, kevinfirth said:

Depends where you need the performance most, HT off may give you a couple hundred MHz on the main core, but do you REALLY need that? Ask yourself would it be a better use of the CPU to take advantage of the HT to get more terrain threads working, reducing blurries etc? Your choice...

I haven’t got a clue which is why I think it’s important LM programmers produce a document with recommendations for various CPUs and whether Hyperthreading is beneficial or not.

I certainly don’t want to spend my time piddling around with the BIOS and AF when I’d rather be flying.

4 minutes ago, Ray Proudfoot said:

I certainly don’t want to spend my time piddling around with the BIOS and AF when I’d rather be flying.

I agree Ray. I have 5.2 working pretty good for how I like to fly. It seems so far that this new core stuff will be of use to guys with the newer processors which is great but I am going to wait a few days and see if I really need this release. One thing is for sure...not one person so far been yelling WA! HOO! over this release. It is of course early times yet. I will be looking forward to your test over the coming days.