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birdguy

Need some advice...

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...the system in the graphs was at 4k res, basic straight install of P3D v4 Plus and a tweak to shadows. Flying the Mooney at 2000ft East over Cardiff.

The thing is I fully understand where Sue is coming from, and all the others here. These are not following me as far as it seems.

Better to not run out of room, and that's quite good advice.

What has emerged over the decade is that the number one problem as I see it is the progfiles/admin disaster zone created by those that should know better.

But if we do run out of room on drive C, it's no problem to place large addons in another drive. That's the beauty of P3D.

In reality MS and LM provide a luxurious platform that allows us to do anything we want.

 

 

 

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Steve Waite: Engineer at codelegend.com

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So for those looking to get big PC's that might want to know how to get the best from them. If we fly way too fast for the settings and pause we can sometimes see the odd forest or town fill in. Repeating the flight to find if when we get there, the forest is already filled in, or swathes of buildings whip in to the view more quickly.

The graphs I took a minimum of three and chose the best result from HT disabled, and the worst from HT enabled. The quality line shows a lift too because the fill-in is more efficient and does not disturb the flow of the sim causing stutter.

The loading was always faster with the paired HT LP cores enabled. I can add more and the loading time comes down further and further. The difference widens all the time.

However, a problem emerges where the main task of rendering the view appears to be affected and the flow is unsteadied.

In other words there will be an optimum load time to main task stability. Load too fast and the resources are denying the demand from the main task.

Seems natural to find there is an optimisation in this case because P3D, and FSX are hybrid programs using a main task and a coalescing set of tasks grabbing the data is handled by another task.

The monolithic tasks are best kept to a single LP of an HT core so we see the fps is almost completely unaffected by using HT or not. That's a fundamental thing that needs to be understood before moving on with this subject.

The background tasks can be paralleled onto HT cores which increases the speed of loading because it is highly multi-threaded. This side of things improves with D3D12 so that fill-in is even better.

 

At all times I am having fun studying these systems. I am not posting this to trash others ideas.

I am hoping that this kind of information can help those on their way with big systems.

Regards

Steve

 

Edited by SteveW
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Steve Waite: Engineer at codelegend.com

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3 hours ago, SteveW said:

The difference is that the HT mode fills in the sim with the background objects half as fast again.

With HT disabled I lose 1/3 my fill-in rate.

Most succinct argument in favour of HT I've seen yet!

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Kevin Firth - i7-8700K @5.0; Asus Maximus X Hero; 32Gb Cas14 3200 DDR4; RTX2080Ti

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Thanks Kevin. I am investigating a multithreaded blocking situation in Win10 that can affect P3D v4. At the moment I recommend if you use an AM for P3D make sure to use the core zero. I can't go into detail.


Steve Waite: Engineer at codelegend.com

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9 minutes ago, SteveW said:

Thanks Kevin. I am investigating a multithreaded blocking situation in Win10 that can affect P3D v4. At the moment I recommend if you use an AM for P3D make sure to use the core zero. I can't go into detail.

Do you mean an AM ending in 01, rather than 10?

Edited by Bert Pieke
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Bert

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Good point. Go for '01' on the right of the HT enabled AM in P3D. Not sure who is affected.

Edited by SteveW
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Steve Waite: Engineer at codelegend.com

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Sue, I was running out of room on my current 1GB boot drive with P3Dv3 AND all of the P3Dv3/FSX  Orbx scenery installed.  Everything!

But after migrating the Orbx scenery to my D drive I have 40% of my boot drive free again.

My new system will have a 2GB boot drive so since this computer is going to be dedicated to P3Dv4 plus my e-mail and Word perfect I don't really see a problem.  I will still have a bit more than 1GB or 50% of the drive free.  And if in a decade or so, when I am 96 years old and probably won't care, I start running out of room I can always migrate the Orbx scenery to the 2GB storage drive.

Now the question becomes what advantages are there to installing P3D on an SSD as opposed to an HDD?  I would assume the performance would be better on the SSD.  Or doesn't it make a difference at all?

Noel

 

Edited by birdguy

A cranky old curmudgeon trying to cope in the wake turbulence of a century rapidly leaving me behind.

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6 hours ago, Penzoil3 said:

It will load a little bit faster, basically, that's all.

A lot faster... and it is a lot quieter :cool:


Bert

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Going back maybe 6 years or so, many PCs had a small SSD and a large HDD. The advise to put the sim straight onto the HDD (avoid C) was fairly good advice back then. I agree with Sue on these circumstances, especially with the less experienced user of FSX and P3D. However a lot of addons, none the less, went straight into the user area on C anyway, and would need to be moved or would fill the SSD that way. What we do with P3D when requiring a large addon to be moved onto another drive, maybe photo scenery, is to use the add-on.xml path to point to the new location. With more recent PCs we have bigger SSDs and we can decide if we can manage the stock install into that SSD. The problem I see on the forums is that advice has kind of stuck in the past a little on that size issue. There's always been a way to use an alternate drive for addons or move parts of the sim install too FSX and P3D. We don't have to make a partition to get another drive letter to avoid access problems of some addons. We don't have to avoid program files we can set the Modify allow if we want to. Advice to make folders and drives to avoid access problems can end in problems of their own making. One example is accidentally installing in the root. When ticking the Modify allow box, there's nothing in there that can upset the system, ticking the wrong box won't make anything go wrong:

P3DUsersGroup.jpg

When the Modify Allow box is ticked the Write Allow box is automatically ticked for us. This is the proper way to avoid access issues in the protected exe area Program Files folders. Full control is not required.


Steve Waite: Engineer at codelegend.com

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On 2/15/2020 at 8:32 AM, birdguy said:

Now the question becomes what advantages are there to installing P3D on an SSD as opposed to an HDD?

If you are buying Dell's option of a 2TB SSD and 2TB HDD, then you will want to install your applications on the SSD.  It is a NVMe SSD (about 3000MB/s reads and writes) rather than the SSD most folks are familiar with (SATA... about 500MB/s reads and writes).  As Sue noted, performance (however that is defined) will not be better but load times will be shockingly faster if you install apps on the NVMe drive of your new computer.  I would not bother installing anything sim associated on the new HDD.  Consider using it only for storage of your personal files.

Good luck and have fun,

Greg

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i7-8086K @ 5.3GHz, ASUS Maximus XI Hero, EVGA 2080 Super driving a 27" 2K LCD, G.Skill 16GB 3600 Trident Z 15-15-15, Samsung 512GB 970 Pro NVMe (OS and P3D) and Sabrent 1TB Rocket NVMe, Malware 10 Pro 64.  P3Dv4.5HF2

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