On the laptop, I've got this. I'll try on one of the other machines tomorrow. 
Or maybe not since I'm flying then, but soon.

Thanks for the hints. I'll switch to master if I have trouble

JB

Traceback (most recent call last):
  File "parallelpythontest.py", line 38, in <module>
    DataRepresentation2.ColorArrayName = 'RTData'
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 212, in __setattr__
    setter(self, value)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 2276, in setProperty
    return self.SetPropertyWithName(propName, value)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 267, in SetPropertyWithName
    prop.SetData(arg)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 695, in SetData
    raise ValueError("Could not locate array %s in the input." % arr)
ValueError: Could not locate array RTData in the input.
Traceback (most recent call last):
  File "parallelpythontest.py", line 38, in <module>
    DataRepresentation2.ColorArrayName = 'RTData'
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 212, in __setattr__
    setter(self, value)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 2276, in setProperty
    return self.SetPropertyWithName(propName, value)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 267, in SetPropertyWithName
    prop.SetData(arg)
  File 
"C:\cmakebuild\pv-meshless\Utilities\VTKPythonWrapping\site-packages\paraview\servermanager.py",
 line 695, in SetData
    raise ValueError("Could not locate array %s in the input." % arr)
ValueError: Could not locate array RTData in the input.

From: Andy Bauer [mailto:[email protected]]
Sent: 21 December 2011 21:59
To: Biddiscombe, John A.
Cc: [email protected]
Subject: Re: [Paraview] PV 3.12.0 coprocessing problem

I'm attaching a couple of files that you can use to test if you have the proper 
fix for your branch.  Run the python script with "mpirun -np 8 bin/pvbatch -sym 
parallelpythontest.py".  If you get the same results then you don't have the 
fix yet for the image issue.  Note that parallelpythontest2.png isn't getting 
colored properly while parallelpythontest.png is.

Andy
On Wed, Dec 21, 2011 at 3:48 PM, Biddiscombe, John A. 
<[email protected]<mailto:[email protected]>> wrote:
I'll give it a try using master, a very simple python script is attached.

The original contained a lot more filters, this has most of them stripped out 
and just a contour left. And yes, it is possible that some processes have no 
points.

JB

From: Andy Bauer [mailto:[email protected]<mailto:[email protected]>]
Sent: 21 December 2011 19:10
To: Biddiscombe, John A.
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [Paraview] PV 3.12.0 coprocessing problem

Hi John,

There were a couple of issues when saving images.  One was for saving charts 
and maybe 2d views.  The other one was for when some processes didn't have any 
points or cells.  Looking at your stack traces I don't think it's the latter 
since that would fail in the python script and give a warning in there.  Any 
chance you could test with the paraview's current master branch?

Are you using a python script to drive the coprocessing?  If yes, can you share 
it?

Andy
On Wed, Dec 21, 2011 at 12:15 PM, Biddiscombe, John A. 
<[email protected]<mailto:[email protected]>> wrote:
I'm getting lock ups when saving images using the coprocessing. It looks a lot 
like a bug that was fixed many moons ago, but maybe the fix got lost in a merge 
...

1  process makes it to here and waits for MPI traffic

>       vtkParallel.dll!vtkMPICommunicatorReduceData(const void * 
> sendBuffer=0x000000000012c318, void * recvBuffer=0x000000000012c378, __int64 
> length=3, int type=11, int operation=1476395010, int destProcessId=0, int * 
> comm=0x0000000005d77670)  Line 317   C++
       vtkParallel.dll!vtkMPICommunicator::ReduceVoidArray(const void * 
sendBuffer=0x000000000012c318, void * recvBuffer=0x000000000012c378, __int64 
length=3, int type=11, int operation=1, int destProcessId=0)  Line 1422 + 0x4c 
bytes      C++
       vtkParallel.dll!vtkCommunicator::Reduce(const double * 
sendBuffer=0x000000000012c318, double * recvBuffer=0x000000000012c378, __int64 
length=3, int operation=1, int destProcessId=0)  Line 633 C++
       vtkParallel.dll!vtkMultiProcessController::Reduce(const double * 
sendBuffer=0x000000000012c318, double * recvBuffer=0x000000000012c378, __int64 
length=3, int operation=1, int destProcessId=0)  Line 811       C++
       
vtkPVClientServerCore.dll!vtkPVSynchronizedRenderWindows::SynchronizeBounds(double
 * bounds=0x000000000d18a8a8)  Line 1381      C++
       vtkPVClientServerCore.dll!vtkPVRenderView::GatherBoundsInformation(bool 
using_distributed_rendering=true)  Line 598     C++
       vtkPVClientServerCore.dll!vtkPVRenderView::Render(bool 
interactive=false, bool skip_rendering=false)  Line 882  C++
       vtkPVClientServerCore.dll!vtkPVRenderView::StillRender()  Line 745      
C++
       
vtkPVClientServerCoreCS.dll!vtkPVRenderViewCommand(vtkClientServerInterpreter * 
arlu=0x0000000005d6be10, vtkObjectBase * ob=0x000000000d18a770, const char * 
method=0x000000000e1f7ee9, const vtkClientServerStream & msg={...}, 
vtkClientServerStream & resultStream={...})  Line 258  C++
       
vtkClientServer.dll!vtkClientServerInterpreter::ProcessCommandInvoke(const 
vtkClientServerStream & css={...}, int midx=0)  Line 379 + 0x2f bytes        C++
       vtkClientServer.dll!vtkClientServerInterpreter::ProcessOneMessage(const 
vtkClientServerStream & css={...}, int message=0)  Line 214 + 0x1d bytes        
C++
       vtkClientServer.dll!vtkClientServerInterpreter::ProcessStream(const 
vtkClientServerStream & css={...})  Line 183 + 0x14 bytes   C++
       
vtkPVServerImplementation.dll!vtkPVSessionCore::ExecuteStreamInternal(const 
vtkClientServerStream & stream={...}, bool ignore_errors=false)  Line 636   C++
       vtkPVServerImplementation.dll!vtkPVSessionCore::ExecuteStream(unsigned 
int location=21, const vtkClientServerStream & stream={...}, bool 
ignore_errors=false)  Line 606 C++
       vtkPVServerImplementation.dll!vtkPVSessionBase::ExecuteStream(unsigned 
int location=21, const vtkClientServerStream & stream={...}, bool 
ignore_errors=false)  Line 157 C++
       vtkPVServerManager.dll!vtkSMProxy::ExecuteStream(const 
vtkClientServerStream & stream={...}, bool ignore_errors=false, unsigned int 
location=21)  Line 2092     C++
       vtkPVServerManager.dll!vtkSMViewProxy::StillRender()  Line 137 + 0x18 
bytes     C++
       vtkPVServerManager.dll!`anonymous 
namespace'::vtkRenderHelper::EventuallyRender()  Line 86      C++
       vtkPVVTKExtensions.dll!vtkPVGenericRenderWindowInteractor::Render()  
Line 302   C++
       vtkRendering.dll!vtkRenderWindowInteractor::Initialize()  Line 632      
C++
       vtkRendering.dll!vtkRenderWindowInteractor::ReInitialize()  Line 76 + 
0x13 bytes        C++
       vtkRendering.dll!vtkWin32OpenGLRenderWindow::SetOffScreenRendering(int 
offscreen=0)  Line 1268  C++
       vtkPVServerManager.dll!vtkSMRenderViewProxy::CaptureWindowInternal(int 
magnification=1)  Line 875       C++
       vtkPVServerManager.dll!vtkSMViewProxy::CaptureWindow(int 
magnification=1)  Line 268 + 0x20 bytes        C++
       vtkPVServerManager.dll!vtkSMViewProxy::WriteImage(const char * 
filename=0x000000000b619f50, const char * writerName=0x000000000ac750e0, int 
magnification=1)  Line 307 + 0x11 bytes     C++
       vtkPVServerManagerPythonD.dll!PyvtkSMViewProxy_WriteImage(_object * 
self=0x000000000b62f6d8, _object * args=0x000000000b62b438)  Line 367 + 0x1f 
bytes  C++

------------------------------
but the other N-1 processes end up in here - waiting

>       vtkParallel.dll!vtkMPICommunicator::BroadcastVoidArray(void * 
> data=0x000000000012dd24, __int64 length=1, int type=6, int root=0)  Line 1159 
> + 0x31 bytes        C++
       vtkParallel.dll!vtkCommunicator::Broadcast(int * 
data=0x000000000012dd24, __int64 length=1, int srcProcessId=0)  Line 256       
C++
       vtkParallel.dll!vtkMultiProcessController::Broadcast(int * 
data=0x000000000012dd24, __int64 length=1, int srcProcessId=0)  Line 402     C++
       
vtkPVServerManager.dll!vtkSMUtilities::SaveImageOnProcessZero(vtkImageData * 
image=0x000000000e2c79c0, const char * filename=0x000000000b729f50, const char 
* writerName=0x000000000ac850e0)  Line 139  C++
       vtkPVServerManager.dll!vtkSMViewProxy::WriteImage(const char * 
filename=0x000000000b729f50, const char * writerName=0x000000000ac850e0, int 
magnification=1)  Line 311 + 0x1f bytes     C++
       vtkPVServerManagerPythonD.dll!PyvtkSMViewProxy_WriteImage(_object * 
self=0x000000000b73f6d8, _object * args=0x000000000b73b438)  Line 367 + 0x1f 
bytes  C++

There was a problem with the SaveImageOnProcess Zero which caused exactly this 
some time ago. I'm using a branch of mine derived from the v3.12.0 tag, but I 
cherry picked Andy's patch from kitware/master or wherever that was mentioned a 
few days ago -are there othe fixes on master/next that I might beneeding?

Any ideas. The pipeline is a contour of some image data on N processes. Pretty 
Simple.

Any help appreciated.

thanks

JB


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