You know what they say ab, lies,damned lies and statistics! Yes, on the evidence of a single test slewing across central London and out to Heathrow there doesn't appear to be much of an advantage using HT. But slewing is not a real flight with engines running etc.

It should be easier to judge if AM of 85 gives clear benefits in actual flights. That test of mine didn't show the aircraft leaving a sparsely populated area and travelling into a dense one. How efficiently the VAS is unloaded should be a good indicator. FPS is not a problem although how much it varies is not known.

On 11.05.2017 at 9:07 PM, SteveW said:

And so we use AM=85 with the four core+HT and AM=340 with the six core+HT to restrict the sim to four processes. Now also, each thread of a 32bit process consumes an extra little bit of VAS due to the WOW64 processes, it's not a lot, a few hundred Mb at most. In other words with or without an AM the VAS is similar within a few hundred Mb..

These "few hundred Mb" VAS difference is exactly what makes my P3D flying as night and day i.e. flying and OOM. They're absolutely critical for the fine sim complexity/performance/VAS compromise I've achieved finally.

My specs are rather mainstream thsese days:

I7-6700K @4.6Ghz, 8Gb RAM @3000Mhz, GTX TITAN X, 2 SSDs for OS and P3D.

First off, with HT On I can normally run my CPU at 4.2-4.4Ghz, not more, which is still OK. But here come my Add-ons:

ORBX FTX Global, OLC EU/NA, Trees HD, FTX Vector (leaned), FSGX2010 + most, most of some older and the recent airports released for P3Dv3+ by AEROSOFT, Drzewiecki-Design, FBS, FlyTampa, FSDT, 29Palms, Imaginesim, Justsim, LatinVFR/USA part, MDESIGN, ORBX Global airports, SIM720, Taxi2Gate, UK2000, RFScenerybuilding, WW Airports HD by REX. AS2016P3D + ASCA + ENVTEX (all on wideclient) + PTA2.1/Reshade (sometimes) + FSLSpotlights.

Aircrafts: ESDG CX2.0, F1 Mustang, Flysimware's LJ35A, FSL A320X, AS A318-321, PMDG737/777/747. ATC: PROATC/X or RC4 or PF3 (all on widecient) + FSDT GSX.

I launch P3D with SIMStarter and the complexity is following: TML=2048, LOD=4.5, Tess=High, Mesh=5m, Tex res=30cm, Water=Med, Scenery=Dense, Autogen Veg=Dense, Autogen Build=Normal, Effects Medium, HDR/Bloom on, MT6 Airline 28%, GA 12%, FSUIPC Limit = 200, AS2016 x6 layer clouds. USB GF Panels 8pcs connected, CH Manager 5 joystics connected, MCP Combo II (AIRBUS FCU) Linda. 

Now, with the above settings try a flight in FSL A320X from UK2000 EGLL to FT EHAM in heavy showers on a route BPK Q295 CLN L620 REDFA (this one is particularly nasty to some reason, VAS doesn't get released well, it's much worse than the return one GORLO UL980 XAMAN L980 LOGAN to some reason, for me this is actually the worst case scenario I found VAS-wise, perhaps due to the proximity to other add-on airports installed all over the place). Anyway I land in EHAM with about 180-200 aircraft on the ground in heavy raining, and still have at the gate 320-340Mb of VAS left, but P3Dv3 does hold out somehow and even improves a little with GSX deboarding and unloading )).

So, ask me if I'm finally happy with the aircraft, stunning visuals on ground, in the sky, in the clouds etc, with no OOMs? Hell yeh! Would I give up 100 to 250 MB for the HT? Absolutely not.

Instead I'd use AM15 in SIMstarter, and assign FGDefP3D.exe, SimObjectDisplayEngine.exe, couatl.exe, APController.exe, EZCA.exe, as_audio to cores 2 and 3 in Process Lasso Pro. Then, icing on the cake, set fps unlimited, VSync On in P3D with 30Hz on NEC31'' monitor - and go fly in your fltsim nirvana.

I'm sure I won't be an early adopter of P3Dv4 and won't touch my hardware for a year or two. I have a couple of monitors (with their pcs below) on the stand right of me, large TV on the wall just above my main monitor and XBOXONE with only NHL17 loaded and gamepad always ready )). No need for HT at all for me here.

More seriously I've gleaned all the above from the kind souls like Steve, Rob, Pete Dowson and so many others with AVSIM in front, of course. Thank you so much! You guys are incredible.

Dirk.

 

 

 

Edited May 12, 20179 yr by Dirk98

Dirk,

A solid block of text is virtually unreadable. Please edit it and create several paragraphs.

6 minutes ago, Ray Proudfoot said:

Dirk,

A solid block of text is virtually unreadable. Please edit it and create several paragraphs.

It's my stream of consciousness, Ray (i.e. rambling). 

Thanks!

3 minutes ago, Dirk98 said:

It's my stream of consciousness, Ray (i.e. rambling). 

Thanks!

That's better!

Is it known which drivers have a VAS leak?

I have been getting OOMs on the last couple of flights but never encountered one before. Thing is, I haven't even changed any settings nor did I install new addons...

On 07.05.2017 at 3:45 PM, Cruachan said:

Hi Ray,

Edit: Capping frame rates in the sim is a way of reducing the load on the GPU while helping to reduce the number of long frames (stuttering). If the limiter is set to unlimited then don't be surprised to see your GPU working upwards of 90% with the consequent heat implications. I have turned off VSync and Triple buffering and performance remains very fluid most of the time. I cap at 31fps which seems effective but, again, this is system specific.

Regards,

Mike

 

Warning: the above is totally outdated and different for P3Dv3+

I took it from the hoarse's mouth SteveW.

Dirk.

7 minutes ago, Dirk98 said:

Warning: the above is totally outdated and different for P3Dv3+

I took it from the hoarse's mouth SteveW.

Dirk.

Exactly what part of the above is outdated Dirk? Capping framerates reduces the CPU load? Or does it not reduce occurrence of long frames? Perhaps it's running the GPU at 90% could cause heat problems. Unless it's turning off Vsync & Triple Buffering doesn't affect performance.

My point is that it is all very valid for P3DV3+, just that it will affect each system differently. I, and many others, cap my system at 20 and couldn't be happier. I could cap it at 30 but I see no benefit - my sim doesn't run any better at all at 30 than it does at 20.

Vic

3 hours ago, Afterburner said:

If you ask me, having Affinity Mask off actually provides quite good and well-balanced values for average FPS, minimum FPS, maximum FPS and VAS consumption according to your table.

I have a four-core CPU in my system (i5 4690K). One time, I experimented with the AF values by assigning the cores 2,3 and 4 to Prepar3D. The motive was that without AF, I saw core 1 at nearly 100% in the task manager, while the other cores were sitting almost idle. Setting AF=16 provided a measurable boost to the initial FPS on runway, and the cores 2,3 and 4 were tasked evenly. However, after further experimenting, I noticed that the FPS on approach were lower than without using AF and that the autogen objects appeared later in some instances. So I deleted the AF entry and stopped messing with it. While with AF off, the other cores are unstressed in the initial state where hardly any scenery is loaded, you can see all four cores active when Prepar3D loads intensive scenery during a flight. In that situation, if you "remove" a core from P3D, you reduce the overall computing power and lower your FPS (where only three cores are available in a situation where all four cores were loaded without using AF). The default state without AF is not for nothing.

That's the thing. With only four cores and no HT on the i5, we cannot break up the sim into four parts to separate out the rendering onto one core while using only three cores like we do with 116. So using three cores of the i5 means there's more on the core with the rendering including the arbitration of the background resources. With an i5 really you got to leave the AM out and P3D (or FSX) will use all four cores as best as possible.

Remember that the real issue is how other exe apps lay out across the CPU and with only four cores that means much more interaction. Use the bat method to assign the third and fourth cores to addons and leave out the AM.

43 minutes ago, vgbaron said:

Exactly what part of the above is outdated Dirk?

Most of it, Vic.

If you start "capping frame rates in the sim" as suggested you actually increase the load on GPU and CPU due to (SteveW will explain here)>..................................................................... (creating extra buffers or something), that's how it works in P3D.

So the expert advice was TO SET FRAME RATES in the sim to UNLIMITED, engage VSync On in the sim, and decrease your monitor refresh rate (outside the sim) to something  acceptable like 25-31Hz

That's how it works in P3D as opposed to FSX+. Totally differen mechanism.

Dirk.

Edited May 12, 20179 yr by Dirk98

Yet many people get the best results by not running unlimited or Vsync which just further shows there is still a lot of difference between theory and practice depending on the system. There is NO one size fits all, especially in P3D.

If one method works for you, fantastic, but I suggest not turning others off from other methods. Different? Yes - outdated? not at all.

Vic

26 minutes ago, vgbaron said:

Yet many people get the best results by not running unlimited or Vsync which just further shows there is still a lot of difference between theory and practice depending on the system. There is NO one size fits all, especially in P3D.

Many people get many results all over the place, has always been like that here. Doesn't change how P3D works internally. FPS unlimited, VSync On, Monitor refresh @25-31Mhz is a good starting point to begin your tweaking. P3Dv3 works totally different from FSX-SE in this specific aspect. People deserve to know that, lol.

Thanks,

Dirk.

8 hours ago, Dirk98 said:

Many people get many results all over the place, has always been like that here. Doesn't change how P3D works internally. FPS unlimited, VSync On, Monitor refresh @25-31Mhz is a good starting point to begin your tweaking. P3Dv3 works totally different from FSX-SE in this specific aspect. People deserve to know that, lol.

Thanks,

Dirk.

I agree with Dirk 

On 2017-5-12 at 9:04 PM, Canuck said:

Is it known which drivers have a VAS leak?

I have been getting OOMs on the last couple of flights but never encountered one before. Thing is, I haven't even changed any settings nor did I install new addons...

All of them after the. 33 drivers.   Although the leaks are in different places on the p3d globe. 

13 minutes ago, tooting said:

All of them after the. 33 drivers.   Although the leaks are in different places on the p3d globe. 

Do you really think that a video driver know where you are ?