lukejw20

PMDG 747 V3 OOM after long haul

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Hello. I was flying from Atlanta to Los Angeles a few weeks ago on the PMDG 747 and as I got close to LAX, my laptop started making windows 10 notification sounds over and over again until I finally got an OOM error seconds before touch down on Runway 7R. I was flying from Chicago to Amsterdam a few days later and the windows 10 notification sounds started again as I got close to Amsterdam. My graphic filtering is bilinear, I have anti-aliasing on, my graphics detail is high, and my special effects detail is medium. I have also lowered my traffic settings. My memory limit to how much FSX can use is 1903 mb, which is the recommended. When parked at the gate in the 747, the memory usage is around 1700 mb. Here are my specs:

Processor: Intel(R) Core(TM) i5-7300HQ CPU @ 2.50GHz 

8 Gigabytes of RAM

64bit operating system, x64-based processor

 

Is there any other way that I can at least try to fix the OOM errors? 

Note: The 737 NGX and 777 do not have this problem, although I have not flown a 777 on long haul since what happened with the 747

 

Luke Welborn

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I'm not trying to be clever but the best way to get rid of OOM's is to upgrade to P3Dv4. If that isn't possible I'm sure others will chime in with good advice.

Edited by DavidP

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OOM Errors are not uncommon when using a 32bit sim like FSX, with complex planes, scenery add-ons. Remember, OOM Errors has nothing to do with running out of physical memory, as you have 8 gig, but running out of Virtual Address Space (VAS). Which is limited to 4 GB for a 32 bit application (FSX).  As David suggests, the only real option is to use a 64bit Sim (P3Dv4). Anything else, and its a compromise. Lower graphic settings, remove scenery, etc. in order to stay within the 4GB VAS. 

Recommend searching for "AVSIM CTD guide"  for more info. 

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I think its on page 29 of the 747 intro manual - VAS and OOM 

A 64 bit flight simulator (not just operating system) is the only fix for this situation currently. Anything else is like applying ones finger to stop a Hoover Dam leak....futile.

Lower the sliders...fly to small barren airports....don't fly in stormy skies....on and on...backwards solutions for the sake of stubbornness. 🤢🤮

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Honestly, I've had plenty of oom errors with P3DV4 as well. Better than FSX for sure but definitely limitations. Long flight with HD clouds, study level plane and scenery as well as autogen sliders too high and game over💣

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26 minutes ago, PATCO LCH said:

Honestly, I've had plenty of oom errors with P3DV4 as well

I've never seen one since changing over to 64-bit. Maybe I'm lucky.

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20 minutes ago, DavidP said:

I've never seen one since changing over to 64-bit. Maybe I'm lucky.

I think I may use too many apps running outside the sim. I use Active Sky for P3D, Little Nav Map, OPUS FSI for camera. If I change time after starting the sim or click on the Nav Map too often to check my position I seem to get bit. I don't know. I have studied the AVSIM CTD guide. Just try to push my system too far sometimes. Seems you find a workable balance then just try to move things up a little too much. 

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49 minutes ago, PATCO LCH said:

Honestly, I've had plenty of oom errors with P3DV4 as well

You are likely the only one, and/or you are confusing OOM with some other error; your system specs may tell a better picture. 

But if you are saying that (or sticking to) you are getting a VAS OOM error in P3Dv4, then I personally don't believe you at all.

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1 minute ago, PATCO LCH said:

I think I may use too many apps running outside the sim.

I have usually 14 apps running plus Internet with 3 tabs during 14+ hour long hauls in the PMDG 748 and never got a VAS OOM.

It is more likely you are referring to system memory. How much system memory do you have?

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5 minutes ago, pracines said:

You are likely the only one, and/or you are confusing OOM with some other error; your system specs may tell a better picture. 

But if you are saying that (or sticking to) you are getting a VAS OOM error in P3Dv4, then I personally don't believe you at all.

Checking the event log they are APP Hangs. I was associating OOM with CTD. 

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1 minute ago, PATCO LCH said:

Checking the event log they are APP Hangs. I was associating OOM with CTD. 

Whew - I thought for a moment I was having a nightmare. 😃

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8 minutes ago, pracines said:

I have usually 14 apps running plus Internet with 3 tabs during 14+ hour long hauls in the PMDG 748 and never got a VAS OOM.

It is more likely you are referring to system memory. How much system memory do you have?

If you mean RAM I have 16Gb.

Edited by PATCO LCH

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46 minutes ago, PATCO LCH said:

think I may use too many apps running outside the sim. I use Active Sky for P3D, Little Nav Map, OPUS FSI for camera

Hmm, I use those but Ezdok for the camera. Also the "heavyweights" - PMDG, FSL, Orbx global and regions. Not too many "mega" airports though.

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15 hours ago, PATCO LCH said:

Honestly, I've had plenty of oom errors with P3DV4 as well. Better than FSX for sure but definitely limitations. Long flight with HD clouds, study level plane and scenery as well as autogen sliders too high and game over💣

Looks like someone has already chimed in, but I want to be clear that, in a 64-bit environment and sim, this is theoretically impossible. You'd overrun your RAM first before you ripped through VAS in 64-bit.

OOM and CTD are not interchangeable. An OOM can cause a CTD, but a CTD is not always the result of OOM (square implies rectangle, but rectangle does not imply square).

 

 

----------

MOD NOTE: Luke - please be careful as to where you post. Posting a thread in the top level of our forum like this means that people are likely to miss it. Threads should be created in the appropriate sub-forum. In this case: PMDG General.

I have moved this thread to the appropriate location.

Edited by scandinavian13
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EHAM is and has always been cursed with bad performance in FSX. Since I installed FlyTampa scenery it's gotten even worse with OOMS.

What sometimes helps for me is to put the sim on pause 'P' for a minute and then continue. It might just give you an extra few seconds so you can complete the touch down to stand still.

You could try DX10 preview mode as it is slightly easier on VAS. It's very little but could just make the difference. PMDG does not support DX10 preview mode though so cannot promise a smooth ride. FWIW, in my case I do not notice any difference.

 

 

 

 

 

Edited by avhpilot

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48 minutes ago, avhpilot said:

What sometimes helps for me is to put the sim on pause 'P' for a minute and then continue. It might just give you an extra few seconds so you can complete the touch down to stand still.

What should always work better than a Pause (I am surprised that works for you) is to save the session before TOD.  Exit FSX.  Start FSX and load the saved flight.  All the VAS memory that had been building up (FSX does a poor job of disposing of stuff in memory) will start fresh and you should be able to get to the gate without problems.  I've used this most flights before P3Dv4.  Save your flight at least 10 nm before the TOD or any changes in heading to give the aircraft time to initialize and settle down on attitude and speed.

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16 hours ago, PATCO LCH said:

I think I may use too many apps running outside the sim. I use Active Sky for P3D, Little Nav Map, OPUS FSI for camera. If I change time after starting the sim or click on the Nav Map too often to check my position I seem to get bit. I don't know. I have studied the AVSIM CTD guide. Just try to push my system too far sometimes. Seems you find a workable balance then just try to move things up a little too much. 

I use far more than that on every flight (sometimes 3 a day) and have never even come close to an OOM in v4

List of my add on's:

P3D v4.3 
PMDG 737
PMDG 747-400
PMDG 747-8
Aerosoft A318 Pro
Aerosoft A320 Pro
FSL A320 X
MJC Q400
TFDi 717
FS2Crew Reboot for P3D v4
Ultimate Traffic Live 
FSFX PricipitFX
FSFX 737 Immersion
FSFX Chaseplane
FTX Global for P3D v4
FTX Europe LC
FTX Vector
FTX Australia
FTX Germany North
FTX Germany South
FTX England
FTX Scotland
FTX Ireland
FTX Northern Ireland 
FTX Wales
FTX CityScene Barcelona
Black Marble Base and Vector
Stargazer
REX SkyForce 3D
ENVTEX for P3D v4
ENVSHADE
ASP4 for P3D v4
GSX Level 2 for P3D v4
ProATC X 

Airports
UK2000 Airports
 

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As stated earlier I made the mistake of confusing crash to desktop with oom. Not the same, nevertheless I have had several CTD's with P3DV4. Why I am not sure but does seem affected by settings such as level of detail radius, autogen settings as well as other texture setting. I have what I consider a mid-level Alienware PC which is two years old so I don't think inadequite equipment is necessarily the issue.

P3DV4 is exponentially an improved sim compared to FSX but still has to be somewhat nurtered to find that sweet spot which is unique to each individual. If you have been able to throw your sliders to the right, pile on the heavy scenery add-ons and fly the complex aircraft for 16 hours I rejoice on your behalf. All I'm saying is this has not been my experience. I have at times had Prepared fall off the screen and yes I have studied the AVSIM CTD guide.

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6 minutes ago, PATCO LCH said:

As stated earlier I made the mistake of confusing crash to desktop with oom. Not the same, nevertheless I have had several CTD's with P3DV4.

The CTD events that I have encountered in P3Dv4.3 have always been traced back to an addon.  Make sure all your addons, specifically those that use dll or exe modules, are up to date.  For example, FSDT has been updated numerous times in the past six months. Make sure you have the latest FSUIPC and SODE.

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1 hour ago, downscc said:

The CTD events that I have encountered in P3Dv4.3 have always been traced back to an addon.  Make sure all your addons, specifically those that use dll or exe modules, are up to date.  For example, FSDT has been updated numerous times in the past six months. Make sure you have the latest FSUIPC and SODE.

Thanks Dan. I have almost all FSDT products. I'll check that. I also have all the ORBYX Globel World Class sceneries. Adjusting Vector down helps.

I know this is subject matter outside the PMDG forum but my CTD's always occurred during cruise and occasionally at the same point on the map. For some strange reason North Georgia seems problamatic.

 

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11 minutes ago, PATCO LCH said:

Thanks Dan. I have almost all FSDT products. I'll check that. I also have all the ORBYX Globel World Class sceneries. Adjusting Vector down helps.

FSDT's couatl scripting engine, and/or add-on manager can cause odd issues.

"orbx," btw - it seems people from OZ like to make weird names that shirk normal spelling rules...orbx...qantas... (poking fun, obviously - I really love their work...and I also speak German, which is arguably much worse 😛 )

14 minutes ago, PATCO LCH said:

I know this is subject matter outside the PMDG forum but my CTD's always occurred during cruise and occasionally at the same point on the map. For some strange reason North Georgia seems problamatic.

Sounds kinda like it might be in/around ATL. Have any add-ons there?

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1 hour ago, scandinavian13 said:

it seems people from OZ like to make weird names that shirk normal spelling rules

Fair dinkum, do we??

1 hour ago, scandinavian13 said:

qantas

Qantas with a "u" just doesn't look right 🤣

Edited by DavidP
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4 minutes ago, DavidP said:

Qantas with a "u" just doesn't look right 🤣

Agreed. Also an acronym, if I remember correctly, yeah?

Queensland and Northern Territory something-something?

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13 minutes ago, scandinavian13 said:

Queensland and Northern Territory something-something?

Air Service?

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8 minutes ago, downscc said:

Air Service?

"Aerial Services".

There is a great museum, the Qantas Founders Museum at Longreach (YLRE). They have static displays of a 747 Classic as well as a 707. The museum itself is a fantastic experience with displays dating from Qantas' beginnings.

Awesome stuff.

Edited by DavidP

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