Blender Foundation: Blender 2.x BF release: Detail: 28407 Frequent crashes when sculpting (OSX)

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[#28407] Frequent crashes when sculpting (OSX)

Date:
2011-08-28 21:57 Priority:
3

State:
Closed

Submitted by:
Maarten Truyens (mtruyens) Assigned to:
jens verwiebe (jensverwiebe)

Category:
Sculpting Status:
Fixed / Closed

Relates to: Duplicates:
[#28661]

Patches:

Summary:
Frequent crashes when sculpting (OSX)

Detailed description

Hi there!

When sculpting (with multicore option on), I seem to get frequent crashes on my Lion (10.7.1) Macbook Pro 15" (Intel HD 3000 graphics card selected). It's not really reproducible -- I'm sculpting, not really following dedicated steps -- but I nevertheless thought this could be interesting to know.

Followup

Message

Date: 2011-08-28 22:58
Sender: Campbell Barton
we've had quite a few reports about this, seems that Lion has a problems with blenders use of OpenMP.

Date: 2011-09-15 17:00
Sender: Sergey Sharybin
Closed duplicated report http://projects.blender.org/tracker/index.php?func=detail&aid=28661&group_id=9&atid=498

Date: 2011-09-15 17:15
Sender: Jonathan Williamson
If any testing is needed to help solve this I will be happy to help; assuming it's something that can be changed in Blender vs OS X. This issue is giving me quite the headache.

Date: 2011-09-16 15:50
Sender: Campbell Barton
You could make a build without OpenMP turned on until its fixed.

http://wiki.blender.org/index.php/Dev:2.5/Doc/Building_Blender/Mac

Date: 2011-09-16 16:03
Sender: Sergey Sharybin
In fact, there's an option in toolbox -- Threaded Sculpt. It's on Options panel. Should also help.

Date: 2011-09-25 14:59
Sender: Ton Roosendaal
Jens is working on it. It's very tough stuff... currently he is compiling his own gcc for it even.

Date: 2011-09-26 13:29
Sender: jens verwiebe
Hi
I made now tests with selfcompiled gcc-4.6 ( has newer omp ) and it seems to fix our issues ( almost threadconcurrency related )
Here is a testbuild for OSX 10.6_x86_64, pls test.

http://www.jensverwiebe.de/Blender/blender_x86_64_gcc4.6.zip

I still have to optimize the buildprocess due the new compiler isn´t that apple-like as we know it, but iàm confident to sort this out too.

Jens

Date: 2011-10-04 18:35
Sender: Brecht Van Lommel
Thanks to Jens, our next release 2.60, the release candidate and buildbot builds will now be built with gcc 4.6, which solves this issue. OpenMP has been disabled for other compilers. Instructions for building with a newer gcc are also available:
http://wiki.blender.org/index.php/Dev:2.5/Doc/Building_Blender/Mac/OpenMP

Thanks for reporting, bug closed.

Attached Files:

Name	Date	Download

blender_2011-08-28-215302_Kathleen.crash	2011-08-28 21:57	Download
blender_2011-08-28-212302_Kathleen.crash	2011-08-28 21:57	Download

Changes:

Field	Old Value	Date	By

status_id	Open	2011-10-04 18:35	blendix
close_date	None	2011-10-04 18:35	blendix
Status	Investigate	2011-10-04 18:35	blendix
assigned_to	none	2011-09-25 14:59	ton
Status	New	2011-09-25 14:59	ton
summary	Frequent crashes when sculpting	2011-08-28 22:58	campbellbarton
File Added	17496: blender_2011-08-28-212302_Kathleen.crash	2011-08-28 21:57	mtruyens
File Added	17497: blender_2011-08-28-215302_Kathleen.crash	2011-08-28 21:57	mtruyens

Changes:

Blender 2.x BF release: Blender 2.6 Bug Tracker
[#28661] Sculpting with OpenMP on OS X 10.7 crashes constantly (Relation: Duplicates)