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Process Lasso and Affinity Mask

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Hi all-

 

I've read about Process Lasso and what it can do in a few threads and downloaded it last night.

 

I see it has the capability to set affinity masks.

 

Can this be used to change AMs instead of the JOBSCHEDULER cfg entry in P3D? Looks like a quick and easy way to do this but was wondering if any caveats from others might be worth noting before I proceed.

 

Cheers,

Mark

 

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Hi all-

 

I've read about Process Lasso and what it can do in a few threads and downloaded it last night.

 

I see it has the capability to set affinity masks.

 

Can this be used to change AMs instead of the JOBSCHEDULER cfg entry in P3D? Looks like a quick and easy way to do this but was wondering if any caveats from others might be worth noting before I proceed.

 

Cheers,

Mark

 

Yes it can be used to set AM. At the moment  I testing using the option 'avoid non-phisical cores' for  prepare3d.exe. I suppose its switching off HT, helpful while testing and your switching between HT on and off and saves going to the BIOS and restarting the computer.  

running FTX pnw with ASN, soft clouds and running quite smooth with no blurries.

a further option is to run p3d in game mode, there are notes on it in the help docs.

 

bob

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I didn't know that it manages HT as well. 

 

Interesting.

 

Thanks,

Mark

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Purchased last night, I have an Intel 6700 4 cores and 4 logical 0 - 7 still not sure what to set. Hope the experts can expand on this thread.


- Paul Cartier

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Purchased last night, I have an Intel 6700 4 cores and 4 logical 0 - 7 still not sure what to set. Hope the experts can expand on this thread.

Check this thread -

 

http://www.avsim.com/topic/482415-my-version-on-how-to-get-smooth-and-stutter-free-p3d-31/page-1


 

P3D#1 - 7700K 5.0g ROG X270F 3600 15-15-15 - EVGA RTX 2080ti 1000W PSU 1- 850G EVO SSD, 2-256G OCZ SSD, 1TB,HAF942-H100 Water W1064Pro
40" 4K Monitor 3840x2160 - AS16, ASCA, GEP3D, UTX, Toposim, ORBX Regions, TrackIR
P3D#2 - 3770K 4.7g Asus Z77 1600 7-8-7 GTX1080ti DH14 850W 2-1TB WD HDD,1tb VRap, Armor+ W10 Pro 2 - HannsG 28" Monitors
 

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Do not use Process Lasso to set P3D's affinity. Instead set affinity as usual in the config file. Then use lasso to move addons and external apps to cores (or logical processors - LPs) not used by P3D.

 

Setting the AM of P3D using Lasso or any other external program will inevitably screw up the internal threading process. Hence its better to use Lasso to move other addons and programs off to cores not used by P3D.

 

E.g. You have a 4 core CPU with 8 logical processors (Hyperthreading). Use an AM of 116 (01110100) for P3D (set in config as usual) then move addons like ASN and EZCA to LPs 0-1.

 

For me personally I move ASN, GSX, EZCA to  LPs 0-1 and then chrome and some other background apps to LPs 0-1;4-7. That way you ensure that the main thread used by P3D which is LP 2 is as empty as can be.

 

The one thing of P3D you can change in Lasso for convenience is the CPU Priority. Set to High or Realtime and you don't have to do this via Task Manager before every session anymore.

 

Edit : One more thing you can do is set P3D as a game in Lasso. Then whenever you launch it, it will automatically change your power plan to the high performance one. Unless you already run a high performance power plan in Windows all the time.


Shanan

ASUS Z170 PRO, I7 6700K @ 4.85ghz (HT ON), ZOTAC AMP EXTREME 1080TI GTX (OC), 16 GB DDR4 G.SKILL TRIDENTZ RGB @ 3230MHZ CL 16-17-17-33 (OC)

4X SSDS : WIN 10 (NVME 960 EVO) + P3D + OTHER GAMES, 2X WD BLACKS RAID 0 + 1 SEAGATE BARRACUDA, CORSAIR AX860i PSU, CORSAIR 760T CASE (BLACK),

27 INCH IPS PREDATOR GSYNC 165HZ 1440p + 24 INCH IPS DELL 1080p, THRUSTMASTER HOTAS FCS THROTTLE + FCS16000M

CORSAIR K95 RGB + CORSAIR M65 RGB + CORSAIR MM800 POLARIS RGB, CORSAIR H115i v2, CREATIVE GIGAWORKS 7.1 + ASUS D2X XONAR

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I already set P3d affinity in lasso, is there a way to reset it back to defaults in lasso?

 

Right click Prepar3d.exe -> Select CPU Affinity -> Always then press None.

 

If you do not see a preconfigured AM for Prepar3d.exe under the Rules section then you're good to go.


Shanan

ASUS Z170 PRO, I7 6700K @ 4.85ghz (HT ON), ZOTAC AMP EXTREME 1080TI GTX (OC), 16 GB DDR4 G.SKILL TRIDENTZ RGB @ 3230MHZ CL 16-17-17-33 (OC)

4X SSDS : WIN 10 (NVME 960 EVO) + P3D + OTHER GAMES, 2X WD BLACKS RAID 0 + 1 SEAGATE BARRACUDA, CORSAIR AX860i PSU, CORSAIR 760T CASE (BLACK),

27 INCH IPS PREDATOR GSYNC 165HZ 1440p + 24 INCH IPS DELL 1080p, THRUSTMASTER HOTAS FCS THROTTLE + FCS16000M

CORSAIR K95 RGB + CORSAIR M65 RGB + CORSAIR MM800 POLARIS RGB, CORSAIR H115i v2, CREATIVE GIGAWORKS 7.1 + ASUS D2X XONAR

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Setting the AM of P3D using Lasso or any other external program will inevitably screw up the internal threading process.

 

Where did you read this?

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I wouldn't know where he might have read it, but when I think it thru it makes sense, for example... P3D itself sets an AM after simple determination of what your processor is, but if you set the AM thru Process Lasso, then P3D sets the AM, what is the ramification of that combined set of actions?

 

You got me, I don't know but like I said, makes sense to me, to not tie a knot.


i7 7700K @4.2, GTX 1060 6 Gig, Windows 10, P3D v 5, and MSFS 2020 and a couple of SSD's

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Where did you read this?

This info was actually on many other threads in posts made by Steve and other experts alike. I did not think much of it either until I tried it myself with Task Manager and noticed how the loads shifted within the threads. Something that should not happen if you set an internal Affinity Mask within P3D and leave it as it be.

 

Try it and see for yourself. The actual consequences of that happening are not very well documented but it will definitely cause unnecessary issues with rendering and data loading. E.g. Blurries, scenery popping or slow texture loading etc.

 

Why risk it? I'd rather not add yet another cause for concern or problem to fix in P3D.

 

Edit : I should add it's not just P3D but many other apps and programs that don't like to be told what to do in relation to Affinity Masks. Certain programs will not even run and crash when you try to set an external affinity mask setting to them. So far all the addons I have moved using Lasso seem to be doing fine however I once had a system lock up before when I tried to Lasso my Antivirus program.

 

I wouldn't know where he might have read it, but when I think it thru it makes sense, for example... P3D itself sets an AM after simple determination of what your processor is, but if you set the AM thru Process Lasso, then P3D sets the AM, what is the ramification of that combined set of actions?

You got me, I don't know but like I said, makes sense to me, to not tie a knot.

You are right. However it's the movement of the existing jobs on the LPs chosen by P3D that's the issue. Because Lasso forces the jobs off the LPs and moves them onto the new one selected by Lasso they are jumbled up.

 

The P3D/FSX engine has a certain order : 1st thread is the "main" thread, 2nd thread is the "fiber" thread and all that follow (depending on your am) are scenery rendering threads. When you lasso it this order is lost and the jobs just end up all over the place even though you see the correct LPs being used.

 

Sorry for the long post.


Shanan

ASUS Z170 PRO, I7 6700K @ 4.85ghz (HT ON), ZOTAC AMP EXTREME 1080TI GTX (OC), 16 GB DDR4 G.SKILL TRIDENTZ RGB @ 3230MHZ CL 16-17-17-33 (OC)

4X SSDS : WIN 10 (NVME 960 EVO) + P3D + OTHER GAMES, 2X WD BLACKS RAID 0 + 1 SEAGATE BARRACUDA, CORSAIR AX860i PSU, CORSAIR 760T CASE (BLACK),

27 INCH IPS PREDATOR GSYNC 165HZ 1440p + 24 INCH IPS DELL 1080p, THRUSTMASTER HOTAS FCS THROTTLE + FCS16000M

CORSAIR K95 RGB + CORSAIR M65 RGB + CORSAIR MM800 POLARIS RGB, CORSAIR H115i v2, CREATIVE GIGAWORKS 7.1 + ASUS D2X XONAR

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So far all the addons I have moved using Lasso seem to be doing fine however I once had a system lock up before when I tried to Lasso my Antivirus program.

 

Yes, don't try to lasso your antivirus software - it will cause problems. I believe this is mentioned in the developer's help document where it states that antivirus products are exempt from any restraint by PL.

 

Setting an Affinity Mask for Prepar3D.exe in the configuration file is definitely the way to go. Do not use Process Lasso for this. You will only hinder performance. Steve Waite has discussed this matter on several occasions in other threads. It has been tested thoroughly and, believe me, he knows what he is doing.

 

Mike


My rig: ASUS ROG Rampage V Extreme, i7-5960X (Dynamic OC 4.6 GHz - all cores, HT=ON, AM=21845), Corsair Hydro Series H110i GT Cooler with 2xNoctua NF-A14 PWM 140mm fans, G.SKILL Ripjaws 4 series 16GB (4 x 4GB) DDR4 3000, ASUS GTX 1080Ti ROG STRIX 11GB, GDDR5X (Driver versions: 441.66 (Win7), 457.09 (Win10)), Samsung 850 EVO 1TB SSD x4, Samsung 970 EVO 2TB V-NAND M.2, LG BH16NS40 16x SATA Internal BDRW, EVGA 1200 P2 Watt PSU, Cooler Master HAF X, ASUS ROG Swift PG278Q (G-Sync) monitor at 120Hz. Oculus Rift. Dual Boot: Windows 10 Pro 64bit (2004) / Prepar3D v5.0.31.35253, Windows 7 Pro 64bit / Prepar3D v4.5.12.30293.

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Yes, don't try to lasso your antivirus software - it will cause problems. I believe this is mentioned in the developer's help document where it states that antivirus products are exempt from any restraint by PL.

 

Setting an Affinity Mask for Prepar3D.exe in the configuration file is definitely the way to go. Do not use Process Lasso for this. You will only hinder performance. Steve Waite has discussed this matter on several occasions in other threads. It has been tested thoroughly and, believe me, he knows what he is doing.

 

Mike

egads, is there a guide to tweaking P3D?  I am going in circles: I  had gone through youtube videos and some threads here that are quite long, don't know how I missed this one.


10700k / EVGA 1070

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Followed TheBoom instructions my sim is running very smooth! I have Ezdox, GSX and ASN on cores 0 - 1 left virus software default cores (Avast) not sure what else to lasso.

 

Running sim at 120hz (default is 144) and half vsync and frames lock to 58 in NI I tried 30 but was not as smooth.


- Paul Cartier

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