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Author Topic: Server Crash 2.06 - 2.07 or 2.07 OSX / Linux  (Read 455 times)
Description: Server Crash 2.06 - 2.07 or 2.07 OSX / Linux
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Dave13
Forums Freshman
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Posts: 14


« on: March 22, 2016, 11:33:16 AM »

Hi All,

Sorry for the long post, but hopefully it will be useful.

I'm new to Mandelbulber, I was just introduced to it about a week ago by a colleague, so I can't rule out that what i'm experiencing is because I'm doing something wrong.

I downloaded Mandelbulber 2.06 on to Mac 1 to try it out, I noticed the the Client / Server NetRender option in the Rendering Engine section, so I downloaded Mandelbulber 2.07 (not realising the differnt versions at first) on to Mac 2 to try out NetRender.

When I connected Mac 2 (V 2.07) as a client to Mac 1 (V 2.06) as a server Mandelbulber on Mac 1 (Server only) crashed (it didn't matter whether i used IP (V4) or hostname), So then I tried it in the other direction Mac 1 (V 2.06) as a client to Mac 2 (V 2.07) as a server which also crashed.

At this stage I noticed the difference in version numbers, so I updated Mac 1 to V 2.07, at this point I was able to successfully use the NetRender option in both directions.

I then wanted to add another machine to the "render farm", so I downloaded Mandelbulber 2.07 (this time making sure it was the same version) to my Linux Mint (rosa) machine (Mint 1), I compiled and installed following the instructions.

When I connected Mint 1 (V 2.07) as a client to Mac 1 (V 2.07) as a server and Mandelbulber (Server only) crashed. I then tried Mint 1 (V 2.07) as a client to Mac 2 (V 2.07) as a server, same result.

Finally I tried Mac 1 (V 2.07) as a client to Mint 1 (V 2.07) as a server, again Mandelbulber (Server only) crashed.

So my observation is that Mandelbulber's NetRender option only seems to work when you use the same version and the same operating system.

I hope this information is useful, and that in future you will be able to make NetRender more robust, and able to to produce a meaningful error message rather than crash when incompatible versions are connected. I also hope that in future you can make NetRender work with different versions and different OS's.

Below is the crash report from Mac 1 (V 2.07) as a server when Mint 1 (V 2.07) is the client:

Dave.


Process:               mandelbulber2 [12643]
Path:                  /Applications/mandelbulber2.app/Contents/MacOS/mandelbulber2
Identifier:            com.bermarte.mandelbulber2
Version:               huh?
Code Type:             X86-64 (Native)
Parent Process:        huh? [1]
Responsible:           mandelbulber2 [12643]
User ID:               501

Date/Time:             2016-03-22 18:43:54.536 +1000
OS Version:            Mac OS X 10.11.3 (15D21)
Report Version:        11
Anonymous UUID:        362A314A-2AFB-FB31-BAD5-3CF0E8476074

Sleep/Wake UUID:       50AFA7F0-9F28-468E-804C-5781223BC469

Time Awake Since Boot: 340000 seconds
Time Since Wake:       400 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
abort() called
*** error for object 0x7fd18977b458: incorrect checksum for freed object - object was probably modified after being freed.
 

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib           0x00007fff94730002 __pthread_kill + 10
1   libsystem_pthread.dylib          0x00007fff993b95c5 pthread_kill + 90
2   libsystem_c.dylib                0x00007fff995686e7 abort + 129
3   libsystem_malloc.dylib           0x00007fff8a229e66 szone_error + 626
4   libsystem_malloc.dylib           0x00007fff8a21d827 tiny_malloc_from_free_list + 347
5   libsystem_malloc.dylib           0x00007fff8a21c715 szone_malloc_should_clear + 292
6   libsystem_malloc.dylib           0x00007fff8a21c5b1 malloc_zone_malloc + 71
7   libsystem_malloc.dylib           0x00007fff8a21b0dc malloc + 42
8   libc++abi.dylib                  0x00007fff9b99a33e operator new(unsigned long) + 30
9   com.apple.CoreGraphics           0x00007fff9508b14c path_iterator_orientation_create + 109
10  com.apple.CoreGraphics           0x00007fff9547e889 CGGlyphBitmapCreateWithPathAndDilation + 953
11  com.apple.CoreGraphics           0x00007fff953cc91f CGFontCreateGlyphBitmapWithDilation + 723
12  com.apple.CoreGraphics           0x00007fff9508900e CGGlyphBuilderLockBitmaps + 922
13  libRIP.A.dylib                   0x00007fff9b917ac6 render_glyphs + 263
14  libRIP.A.dylib                   0x00007fff9b917961 draw_glyph_bitmaps + 1789
15  libRIP.A.dylib                   0x00007fff9b9171eb ripc_DrawGlyphs + 1929
16  com.apple.CoreGraphics           0x00007fff950f132d draw_glyphs + 836
17  com.apple.CoreGraphics           0x00007fff95116ba0 CGContextShowGlyphsWithAdvances + 415
18  libqcocoa.dylib                  0x0000000113b76aa7 0x113b11000 + 416423
19  libqcocoa.dylib                  0x0000000113b76d9e 0x113b11000 + 417182
20  org.qt-project.QtGui             0x0000000110c1dc84 QImageTextureGlyphCache::fillTexture(QTextureGlyphCache::Coord const&, unsigned int, QFixed) + 84
21  org.qt-project.QtGui             0x0000000110c1da33 QTextureGlyphCache::fillInPendingGlyphs() + 659
22  org.qt-project.QtGui             0x0000000110bb82fd QRasterPaintEngine::drawCachedGlyphs(int, unsigned int const*, QFixedPoint const*, QFontEngine*) + 813
23  org.qt-project.QtGui             0x0000000110bb8f57 QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 615
24  org.qt-project.QtGui             0x0000000110bd35a0 0x110976000 + 2479520
25  org.qt-project.QtGui             0x0000000110a914e8 QTextLine::draw(QPainter*, QPointF const&, QTextLayout::FormatRange const*) const + 3528
26  org.qt-project.QtGui             0x0000000110bd27f5 0x110976000 + 2476021
27  org.qt-project.QtGui             0x0000000110bd165d QPainter::drawText(QRect const&, int, QString const&, QRect*) + 509
28  org.qt-project.QtWidgets         0x00000001103c6392 QStyle::drawItemText(QPainter*, QRect const&, int, QPalette const&, bool, QString const&, QPalette::ColorRole) const + 546
29  org.qt-project.QtWidgets         0x000000011033e9bc 0x11032a000 + 84412
30  org.qt-project.QtWidgets         0x00000001103d571e QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 4862
31  org.qt-project.QtWidgets         0x000000011033cd23 0x11032a000 + 77091
32  org.qt-project.QtWidgets         0x00000001105ce768 QHeaderView::paintSection(QPainter*, QRect const&, int) const + 2232
33  org.qt-project.QtWidgets         0x00000001105cba91 QHeaderView::paintEvent(QPaintEvent*) + 1169
34  org.qt-project.QtWidgets         0x000000011039a1bb QWidget::event(QEvent*) + 2123
35  org.qt-project.QtWidgets         0x000000011048d76d QFrame::event(QEvent*) + 45
36  org.qt-project.QtWidgets         0x00000001105129fa QAbstractScrollArea::viewportEvent(QEvent*) + 170
37  org.qt-project.QtWidgets         0x00000001105b51cd QAbstractItemView::viewportEvent(QEvent*) + 1453
38  org.qt-project.QtWidgets         0x00000001105cdb8a QHeaderView::viewportEvent(QEvent*) + 522
39  org.qt-project.QtWidgets         0x0000000110513515 0x11032a000 + 2004245
40  org.qt-project.QtCore            0x00000001110cccc9 QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) + 217
41  org.qt-project.QtWidgets         0x000000011035b4ab QApplicationPrivate::notify_helper(QObject*, QEvent*) + 235
42  org.qt-project.QtWidgets         0x000000011035e89e QApplication::notify(QObject*, QEvent*) + 8318
43  org.qt-project.QtCore            0x00000001110cc983 QCoreApplication::notifyInternal(QObject*, QEvent*) + 115
44  org.qt-project.QtWidgets         0x0000000110393970 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 3152
45  org.qt-project.QtWidgets         0x0000000110367c9f 0x11032a000 + 253087
46  org.qt-project.QtWidgets         0x0000000110368043 0x11032a000 + 254019
47  org.qt-project.QtWidgets         0x000000011038a65c QWidgetPrivate::syncBackingStore() + 236
48  org.qt-project.QtWidgets         0x000000011039a484 QWidget::event(QEvent*) + 2836
49  org.qt-project.QtWidgets         0x00000001104a4741 QMainWindow::event(QEvent*) + 929
50  org.qt-project.QtWidgets         0x000000011035b4bb QApplicationPrivate::notify_helper(QObject*, QEvent*) + 251
51  org.qt-project.QtWidgets         0x000000011035e89e QApplication::notify(QObject*, QEvent*) + 8318
52  org.qt-project.QtCore            0x00000001110cd65b QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 971
53  libqcocoa.dylib                  0x0000000113b3391e 0x113b11000 + 141598
54  libqcocoa.dylib                  0x0000000113b341a1 0x113b11000 + 143777
55  com.apple.CoreFoundation         0x00007fff9715b5c1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
56  com.apple.CoreFoundation         0x00007fff9714d41c __CFRunLoopDoSources0 + 556
57  com.apple.CoreFoundation         0x00007fff9714c93f __CFRunLoopRun + 927
58  com.apple.CoreFoundation         0x00007fff9714c338 CFRunLoopRunSpecific + 296
59  com.apple.HIToolbox              0x00007fff9be12935 RunCurrentEventLoopInMode + 235
60  com.apple.HIToolbox              0x00007fff9be1276f ReceiveNextEventCommon + 432
61  com.apple.HIToolbox              0x00007fff9be125af _BlockUntilNextEventMatchingListInModeWithFilter + 71
62  com.apple.AppKit                 0x00007fff8b0740ee _DPSNextEvent + 1067
63  com.apple.AppKit                 0x00007fff8b440943 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
64  com.apple.AppKit                 0x00007fff8b069fc8 -[NSApplication run] + 682
65  libqcocoa.dylib                  0x0000000113b3308d 0x113b11000 + 139405
66  org.qt-project.QtCore            0x00000001110ca07d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 381
67  org.qt-project.QtCore            0x00000001110ccf5a QCoreApplication::exec() + 346
68  com.bermarte.mandelbulber2       0x000000010efb3d4d main + 3117
69  com.bermarte.mandelbulber2       0x000000010eefe1e4 start + 52

Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib           0x00007fff94730ff6 kevent_qos + 10
1   libdispatch.dylib                0x00007fff8c078099 _dispatch_mgr_invoke + 216
2   libdispatch.dylib                0x00007fff8c077d01 _dispatch_mgr_thread + 52

Thread 2:: com.apple.NSEventThread
0   libsystem_kernel.dylib           0x00007fff9472a386 mach_msg_trap + 10
1   libsystem_kernel.dylib           0x00007fff947297c7 mach_msg + 55
2   com.apple.CoreFoundation         0x00007fff9714d624 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation         0x00007fff9714caec __CFRunLoopRun + 1356
4   com.apple.CoreFoundation         0x00007fff9714c338 CFRunLoopRunSpecific + 296
5   com.apple.AppKit                 0x00007fff8b133065 _NSEventThread + 149
6   libsystem_pthread.dylib          0x00007fff993b7c13 _pthread_body + 131
7   libsystem_pthread.dylib          0x00007fff993b7b90 _pthread_start + 168
8   libsystem_pthread.dylib          0x00007fff993b5375 thread_start + 13

Thread 3:: com.apple.CFSocket.private
0   libsystem_kernel.dylib           0x00007fff94730176 __select + 10
1   com.apple.CoreFoundation         0x00007fff9719916a __CFSocketManager + 762
2   libsystem_pthread.dylib          0x00007fff993b7c13 _pthread_body + 131
3   libsystem_pthread.dylib          0x00007fff993b7b90 _pthread_start + 168
4   libsystem_pthread.dylib          0x00007fff993b5375 thread_start + 13

Thread 4:
0   libsystem_kernel.dylib           0x00007fff947306de __workq_kernreturn + 10
1   libsystem_pthread.dylib          0x00007fff993b7729 _pthread_wqthread + 1283
2   libsystem_pthread.dylib          0x00007fff993b5365 start_wqthread + 13

Thread 5:
0   libsystem_kernel.dylib           0x00007fff947306de __workq_kernreturn + 10
1   libsystem_pthread.dylib          0x00007fff993b7729 _pthread_wqthread + 1283
2   libsystem_pthread.dylib          0x00007fff993b5365 start_wqthread + 13

Thread 6:
0   libsystem_kernel.dylib           0x00007fff947306de __workq_kernreturn + 10
1   libsystem_pthread.dylib          0x00007fff993b7729 _pthread_wqthread + 1283
2   libsystem_pthread.dylib          0x00007fff993b5365 start_wqthread + 13

Thread 7:: Dispatch queue: NSCGSDisableUpdates
0   libsystem_kernel.dylib           0x00007fff9472a386 mach_msg_trap + 10
1   libsystem_kernel.dylib           0x00007fff947297c7 mach_msg + 55
2   com.apple.CoreGraphics           0x00007fff95092a64 _CGSReenableUpdateForConnection + 92
3   com.apple.CoreGraphics           0x00007fff9509273d CGSReenableUpdateToken + 532
4   libdispatch.dylib                0x00007fff8c07d871 _dispatch_call_block_and_release + 12
5   libdispatch.dylib                0x00007fff8c07233f _dispatch_client_callout + 8
6   libdispatch.dylib                0x00007fff8c076f6f _dispatch_queue_drain + 754
7   libdispatch.dylib                0x00007fff8c07d63b _dispatch_queue_invoke + 549
8   libdispatch.dylib                0x00007fff8c07233f _dispatch_client_callout + 8
9   libdispatch.dylib                0x00007fff8c0761cf _dispatch_root_queue_drain + 1890
10  libdispatch.dylib                0x00007fff8c075a34 _dispatch_worker_thread3 + 91
11  libsystem_pthread.dylib          0x00007fff993b768f _pthread_wqthread + 1129
12  libsystem_pthread.dylib          0x00007fff993b5365 start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000006  rcx: 0x00007fff50cfad28  rdx: 0x0000000000000000
  rdi: 0x000000000000160b  rsi: 0x0000000000000006  rbp: 0x00007fff50cfad50  rsp: 0x00007fff50cfad28
   r8: 0x00000000fffffff0   r9: 0x0000000000000010  r10: 0x0000000008000000  r11: 0x0000000000000206
  r12: 0x0000000000000001  r13: 0x000000011638e000  r14: 0x00007fff7a382000  r15: 0x0000000110098000
  rip: 0x00007fff94730002  rfl: 0x0000000000000206  cr2: 0x00007fff7a3e8008
  
Logical CPU:     0
Error Code:      0x02000148
Trap Number:     133

Logged
zebastian
Conqueror
*******
Posts: 121



« Reply #1 on: March 22, 2016, 07:39:41 PM »

Hi Dave,

thanks for your report.
tried v206 / v207 as client server combo on windows, which works as desired:
server refuses connection. client notifies with "CNetRender - Version mismatch!"
(this is wanted behaviour, since it is hard to keep the netrender backward compatible with older versions of the program)

your crash report looks like segfault in the native qt gui.
Are you running the server headless (no window manager)?

i will forward your report also to our OSX developer

cheers
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Dave13
Forums Freshman
**
Posts: 14


« Reply #2 on: March 22, 2016, 10:24:24 PM »

Hi zebastian,

Re Headless, no, in all cases i was running with the gui.

You may also want to forward to the Linux developers, as it seems to have the same issue and the Mac OSX version is probably just a port of the Linux code.

I not aware there was headless option yet, I will try that out when I have time.

Thanks,

Dave.
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Buddhi
Fractal Iambus
***
Posts: 895



WWW
« Reply #3 on: March 23, 2016, 09:26:32 PM »

Hi

I have found the problem and it's fixed in Github repository.
Even without fix it should work properly until you use the same version of program for server and client. NetRender cannot work with different versions of program.
This bug caused crashing o program without any error message about mismatched versions of programs.

I have tested NetRender between Windows Vista 32-bit and Linux 64-bit and it works in both directions.

Are sure that you used exactly the same versions of application? There was released version 2.07 and 2.07-1.
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Dave13
Forums Freshman
**
Posts: 14


« Reply #4 on: March 23, 2016, 10:55:33 PM »

Hi Buddi,

Thanks for the reply, yes the Mint machine had 2.07-1 and the Mac's had 2.07.

It would be better if you can stabilise NetRender and make it compatible between versions. I can understand not being compatible between major versions, but it does seem weird to not be compatible between minor versions and patch releases.

I understand this may take a redesign of the NetRender, so don't expect it to be resolved quickly, but it's something to think about and discuss in the dev team.

Dave.
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zebastian
Conqueror
*******
Posts: 121



« Reply #5 on: March 23, 2016, 11:52:32 PM »

@dave there are changes to come which might have a big effect on the netrender too. keeping an eye on backward compatibility is not that helpful in this case, since:
- you will not have the fully palette of function through all versions
- every combination of different versions would need to work, which would be hard to test
- yield bloated code
- redundant work

in general you should see the program as a rolling beta program.
every version increment is a mayor release.
IMHO:
if you are planning to use the program in a server client setup, there is no reasonable way around installing the same version on all machines.

When the dev team grows and the program matures to a state, where we have got fewer changes between versions, this can become a topic again.

btw:
cli: open up a terminal / console / cmd box
go to the path/to/your/mandelbulber and type 'mandelbulber --help'
this should get you started...
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Buddhi
Fractal Iambus
***
Posts: 895



WWW
« Reply #6 on: March 24, 2016, 06:24:05 PM »

Starting from next release, minor revision difference will allow to connect client to server. So e.g. 2.08-1 will run with 2.08-2. But 2.07 will not run with 2.08, because every version has small differences in rendering algorithms, so images could be rendered with errors.
Logged

visual.bermarte
Fractal Fertilizer
*****
Posts: 355



« Reply #7 on: March 24, 2016, 07:08:51 PM »

 smiley Thanks Buddhi, saturday I will run some tests as well. Thanks Dave for the report; this bug was also present in the previous mandelbulber built using GTK.
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Dave13
Forums Freshman
**
Posts: 14


« Reply #8 on: March 26, 2016, 09:20:33 AM »

Thanks for the extra info.

Dave.
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visual.bermarte
Fractal Fertilizer
*****
Posts: 355



« Reply #9 on: March 26, 2016, 06:58:09 PM »

I am running a rendering using three machines; a mac, a windows machine and one with Ubuntu OS, there is no crash using 2.07-1 version,
but one cannot delete or overwrite the output files when a rendering is already done  hurt
« Last Edit: March 27, 2016, 07:29:08 PM by visual.bermarte, Reason: correcting » Logged
visual.bermarte
Fractal Fertilizer
*****
Posts: 355



« Reply #10 on: March 27, 2016, 07:25:43 PM »

This is the newest build > http://bit.ly/22FiicC I have used OpenEXR dynamic libraries, but I lost some time with a link error solved using install_name_tool manually.
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