Blender memory management improvement? Rammap.exe to clear improves stability #62205

New Issue

shaun · 2019-03-05T10:49:15+01:00

shaun commented

2019-03-05 10:49:15 +01:00

System Information
Operating system: windows 10 pro 64bit
GTX 1070

Blender Version
All of 2.79
Solution is outside app to clear standby memory

Short description of error
When system memory become used increasingly over time via blender operations.. stability improves inside blender (no crashing) when I use Rapmap to clear standby memory

Exact steps for others to reproduce the error
Working in a complex scene which uses a fair bit of system memory... Or using a blend file which is known to crash when baking a physics simulation.. and Let's say 50% of system memory used in windows device manager.
As things such as baking physics or using add-ons like flip fluids standby memory starts filling up in windows task manager..
Even though there is let's say 60% system memory is used in windows. The remaining 40% is standby memory (stuff that's no longer needed but can be used again quickly)
When standby is using the rest of the memory blender crashes or at least... Has a very high percentage of crashing compared to when the standby memory is not filling the remaining memory.
A simple sysinternals app (rammap.exe) selecting clear standby will clear memory usage and trying to repeat the baking of the fluid or physics.. will work fine!

I would give this solution an almost 100% improvement on stability!

Would there in any way possible to add a feature in blender which auto clear standby memory.. and having this option in settings..
Would work like detection system memory amount vs standby amount. If it exceeds xx percent to clear it?

It's a good idea and would save very complex baking from crashing..

I have been using this rammap program for years . It's really good and hope the Devs take a look and demo my method and see if anything can be done for blender?

**System Information** Operating system: windows 10 pro 64bit GTX 1070 **Blender Version** All of 2.79 Solution is outside app to clear standby memory **Short description of error** When system memory become used increasingly over time via blender operations.. stability improves inside blender (no crashing) when I use Rapmap to clear standby memory **Exact steps for others to reproduce the error** Working in a complex scene which uses a fair bit of system memory... Or using a blend file which is known to crash when baking a physics simulation.. and Let's say 50% of system memory used in windows device manager. As things such as baking physics or using add-ons like flip fluids standby memory starts filling up in windows task manager.. Even though there is let's say 60% system memory is used in windows. The remaining 40% is standby memory (stuff that's no longer needed but can be used again quickly) When standby is using the rest of the memory blender crashes or at least... Has a very high percentage of crashing compared to when the standby memory is not filling the remaining memory. A simple sysinternals app (rammap.exe) selecting clear standby will clear memory usage and trying to repeat the baking of the fluid or physics.. will work fine! I would give this solution an almost 100% improvement on stability! Would there in any way possible to add a feature in blender which auto clear standby memory.. and having this option in settings.. Would work like detection system memory amount vs standby amount. If it exceeds xx percent to clear it? It's a good idea and would save very complex baking from crashing.. I have been using this rammap program for years . It's really good and hope the Devs take a look and demo my method and see if anything can be done for blender?

shaun commented

2019-03-05 10:49:15 +01:00

Added subscriber: @toxsickcity

Jacques Lucke commented

2019-03-05 10:54:18 +01:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-03-05 10:54:18 +01:00

Does the same problem happen in Blender 2.8?

Is there anything you can do coding wise to "fix" this in Blender?

I'm not absolutely sure if this is a bug or a feature request. Maybe it would be better discuss this topic on https://devtalk.blender.org first. Maybe someone can create a patch for it.

Does the same problem happen in Blender 2.8? Is there anything you can do coding wise to "fix" this in Blender? I'm not absolutely sure if this is a bug or a feature request. Maybe it would be better discuss this topic on https://devtalk.blender.org first. Maybe someone can create a patch for it.

shaun commented

2019-03-05 10:59:54 +01:00

I have not tried 2.8 for this.

I can experiment a little and let you know.

I don't code sorry. Wish I knew how to. The closest I have come to is using Arduino and the code is super simple and always get help as I don't understand half of what's going on.. anyways that's off topic haha

I can see if my complex scenes that have baking issues also get resolved with 2.8

If It does I will post on the forum you said to

I have not tried 2.8 for this. I can experiment a little and let you know. I don't code sorry. Wish I knew how to. The closest I have come to is using Arduino and the code is super simple and always get help as I don't understand half of what's going on.. anyways that's off topic haha I can see if my complex scenes that have baking issues also get resolved with 2.8 If It does I will post on the forum you said to

Brecht Van Lommel commented

2019-03-05 11:55:12 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-03-05 11:55:12 +01:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2019-03-05 11:55:12 +01:00

Brecht Van Lommel self-assigned this 2019-03-05 11:55:12 +01:00

Brecht Van Lommel commented

2019-03-05 11:55:12 +01:00

This is outside the scope of the bug tracker in any case. In general I don't think we can or should do these kind of system-wide memory changes from Blender, better would be switch to a better memory allocator on Windows as we already do on Linux.

shaun commented

2019-03-07 05:37:20 +01:00

In #62205#632664, @brecht wrote:
This is outside the scope of the bug tracker in any case. In general I don't think we can or should do these kind of system-wide memory changes from Blender, better would be switch to a better memory allocator on Windows as we already do on Linux.

Would you be able to recommend any specific app your speaking about?

> In #62205#632664, @brecht wrote: > This is outside the scope of the bug tracker in any case. In general I don't think we can or should do these kind of system-wide memory changes from Blender, better would be switch to a better memory allocator on Windows as we already do on Linux. Would you be able to recommend any specific app your speaking about?

Brecht Van Lommel commented

2019-03-07 12:15:41 +01:00

I'm not referring to an application, but a change that we developers could make into Blender.

shaun commented

2019-03-07 20:28:06 +01:00

Is this something that blender developers are considering?

I have heard a few times and read on forums that some users have faced random weirdness regarding ram usage?

Is this something that blender developers are considering? I have heard a few times and read on forums that some users have faced random weirdness regarding ram usage?

Ray molenkamp commented

2019-03-07 20:36:03 +01:00

Added subscriber: @LazyDodo

Ray molenkamp commented

2019-03-07 20:36:03 +01:00

You can't just swap out the memory allocator on windows, it doesn't work the way it does on linux, most things link directly into the ms crt and there's no supported way of hooking that.

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Blender memory management improvement? Rammap.exe to clear improves stability #62205