<div dir="ltr">The FOAM reader should read the data in parallel. Try changing the CaseType property from Reconstructed (meaning OpenFOAM did the gather) to Decomposed (meaning OpenFOAM left the data as the parallel nodes in the simulation wrote them) case and see if that helps.<div>
<br></div><div class="gmail_extra"><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: <a href="tel:518-881-4909" value="+15188814909" target="_blank">518-881-4909</a></div>
<br><br><div class="gmail_quote">On Thu, Jun 5, 2014 at 2:07 PM, Sebastien Jourdain <span dir="ltr"><<a href="mailto:sebastien.jourdain@kitware.com" target="_blank">sebastien.jourdain@kitware.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Ok, so you are correctly using everything.<div>The question is now on the <i style="font-size:13px;font-family:arial,sans-serif">OpenFOAMReader and if it properly use MPI to read and distribute the data.</i></div>
<div><i style="font-size:13px;font-family:arial,sans-serif">Which unfortunately I don't know.</i></div><div><br></div><div><font face="arial, sans-serif"><i>If you want to force a redistribution of your data across your nodes, you can use the D3 filter just after your reader.</i></font></div>
<div><br></div><div><font face="arial, sans-serif"><i>Seb</i></font></div></div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jun 5, 2014 at 11:44 AM, Daniele Obiso <span dir="ltr"><<a href="mailto:daniele.obiso@phitecingegneria.it" target="_blank">daniele.obiso@phitecingegneria.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hi Sebastien,<br>
<br>
here you can find the main parts of the script.<br>
<br>
<br>
--------------------------------------------------------------------------------------------------------------------------------<br>
<i>try: paraview.simple</i><i><br>
</i><i>except: from paraview.simple import *</i><i><br>
</i><i>paraview.simple._DisableFirstRenderCameraReset()</i><i><br>
</i><i><br>
</i><i>RenderView1 = CreateRenderView()</i><i><br>
</i><i><br>
</i><i>##### Lights</i><i> options<br>
</i><i><br>
</i><i>##### Screen</i><i> options</i><br>
<br>
<i></i><i>##### Set scale parameters</i><i><br>
</i><i>a1_Cp_PVLookupTable = GetLookupTableForArray( "Cp", 3,
RGBPoints=[-1, 0.0, 0.0, 1.0, 0.75, 1.0, 0.0, 0.0],
VectorMode='Magnitude', NanColor=[0.498039, 0.498039, 0.498039],
NumberOfTableValues=100, ColorSpace='HSV', LockScalarRange=1 )</i><i><br>
</i><i>a1_Cp_PiecewiseFunction = CreatePiecewiseFunction()</i><i><br>
</i><i>ScalarBarWidgetRepresentation1 =
CreateScalarBar(Position=[0.33, 0.95], Title='Cp [-]',
Orientation = 'Horizontal', Position2=[0.4, 0.04], Enabled=1,
LabelFontSize=12, LabelColor=[0.0, 0.0, 0.0],
LookupTable=a1_Cp_PVLookupTable, TitleFontSize=12,
TitleColor=[0.0, 0.0, 0.0] )</i><i><br>
</i><i><br>
</i><i></i><i>##### Legend position</i><i><br>
</i><i>GetRenderView().Representations.append(ScalarBarWidgetRepresentation1)</i><i><br>
</i><i><br>
</i><i>##### Time</i><i><br>
</i><i>RenderView1 = GetRenderView()</i><i><br>
</i><i>AnimationScene1 = GetAnimationScene()</i><i><br>
</i><i>AnimationScene1.EndTime = 2500</i><i><br>
</i><i>AnimationScene1.AnimationTime = 2500</i><i><br>
</i><i>RenderView1.ViewTime = 2500</i><i><br>
</i><i><br>
</i><i>##### Open the model: volume mesh</i><i><br>
</i><i>foam_foam = OpenFOAMReader( FileName='../case.foam' )</i><i><br>
</i><i>foam_foam.CellArrays = ['Cp']</i><i><br>
</i><i>foam_foam.CaseType = 'Reconstructed Case'</i><i><br>
</i><i>foam_foam.MeshRegions = ['internalMesh']</i><i><br>
</i><br>
<i>DataRepresentation2 = Show()</i><i><br>
</i><i>DataRepresentation2.ScalarOpacityUnitDistance = 0.01</i><i><br>
</i><i>DataRepresentation2.Representation = 'Outline'</i><i><br>
</i><i>DataRepresentation2.EdgeColor = [0.0, 0.0, 0.5]</i><i><br>
</i><i>DataRepresentation2.Visibility = 0</i><i><br>
</i><i><br>
</i><i>##### Slice</i><i><br>
</i><i><br>
</i><i>RenderView1.CameraViewUp = [0.0, 1.0, 0.0]</i><i><br>
</i><i>RenderView1.CameraPosition = [1.5, 0.3, 18]</i><i><br>
</i><i>RenderView1.CameraFocalPoint = [</i><i><i>1.5, 0.3, 1</i>]</i><i><br>
</i><i>RenderView1.CameraClippingRange = [18, 18]</i><i><br>
</i><i>RenderView1.CameraParallelScale = 0.9</i><i><br>
</i><i><br>
</i><i>SetActiveSource(foam_foam)</i><i><br>
</i><i><br>
</i><i>Slice1 = Slice( SliceType="Plane" )</i><i><br>
</i><i>Slice1.SliceOffsetValues = [0.0]</i><i><br>
</i><i>Slice1.SliceType.Origin = [0, 0, 0]</i><i><br>
</i><i>Slice1.SliceType.Normal = [0, 0, 1]</i><i><br>
</i><i>Slice1.SliceType = "Plane"</i><i><br>
</i><i>DataRepresentation3 = Show()</i><i><br>
</i><i>DataRepresentation3.Visibility = 1</i><i><br>
</i><i>DataRepresentation3.EdgeColor = [0.0, 0.0, 0.5]</i><i><br>
</i><i>DataRepresentation3.ColorArrayName = 'Cp'</i><i><br>
</i><i>DataRepresentation3.LookupTable = a1_Cp_PVLookupTable</i><i><br>
</i><i><br>
</i><i>##### Animation Time</i><i><br>
</i><i>RenderView1 = GetRenderView()</i><i><br>
</i><i>AnimationScene1 = GetAnimationScene()</i><i><br>
</i><i>AnimationScene1.EndTime = 2500</i><i><br>
</i><i>AnimationScene1.AnimationTime = 2500</i><i><br>
</i><i>RenderView1.ViewTime = 2500</i><i><br>
</i><i>AnimationScene1.PlayMode = 'Sequence'</i><i><br>
</i><i>AnimationScene1.NumberOfFrames =10</i><i><br>
</i><i><br>
</i><i>KeyFrameAnimationCue3 = GetAnimationTrack( 'Origin', 2,
proxy=Slice1.SliceType)</i><i><br>
</i><i>KeyFrame1111 = CompositeKeyFrame( KeyValues=[0] )</i><i><br>
</i><i>KeyFrame2222 = CompositeKeyFrame( KeyTime=1.0,
KeyValues=[1.4] )</i><i><br>
</i><i>TimeAnimationCue1 = GetTimeTrack()</i><i><br>
</i><i>TimeAnimationCue1.UseAnimationTime = 0</i><i><br>
</i><i>KeyFrame3333 = CompositeKeyFrame( KeyTime=1.0,
KeyValues=[2500] )</i><i><br>
</i><i>KeyFrame4444 = CompositeKeyFrame( KeyValues=[2500] )</i><i><br>
</i><i>KeyFrameAnimationCue3.KeyFrames = [ KeyFrame1111,
KeyFrame2222 ] </i><i><br>
</i><i>TimeAnimationCue1.KeyFrames = [ KeyFrame3333, KeyFrame4444
]</i><i><br>
</i><i><br>
</i><i><br>
</i><i>##### Write</i><i><br>
</i><i><br>
</i><i>WriteAnimation('Cp.png', Magnification=1, Quality=2,
FrameRate=1.000000)</i><i><br>
</i><i><br>
</i><i>##### End</i><i><br>
</i><i>Render()</i><br>
<br>
--------------------------------------------------------------------------------------------------------------------------------<br>
<br>
Hope this can help you to understand the problem!<br>
<br>
Thanks for the availability!<span><font color="#888888"><br>
Daniele</font></span><div><div><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
On 06/05/2014 07:04 PM, Sebastien Jourdain wrote:<br>
</div></div></div><div><div>
<blockquote type="cite">
<div dir="ltr">Is it using the VTK classes or the paraview Proxy?
<div><br>
<div>Moreover, the reader/source is responsible to distribute
the data to properly handle parallelism.</div>
<div>If it does not, then you right, everything will happen on
the root node.</div>
</div>
<div><br>
</div>
<div>Hense a quick look at the script can help us determine
which part need to change in order to truly use parallel
processing.</div>
<div><br>
</div>
<div>Seb</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Jun 5, 2014 at 8:32 AM, Daniele
Obiso <span dir="ltr"><<a href="mailto:daniele.obiso@phitecingegneria.it" target="_blank">daniele.obiso@phitecingegneria.it</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hi Sebastien,<br>
<br>
thanks for the reply!<br>
<br>
The script is about creating slice and sweep animation.
But it's working fine, i think there is no problem in
it. <br>
Do you need the script to understand something about the
parallelization?<br>
<br>
Let me know!<span><font color="#888888"><br>
Daniele</font></span>
<div>
<div><br>
<br>
<br>
<br>
<br>
On 06/05/2014 04:17 PM, Sebastien Jourdain wrote:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote type="cite">
<div dir="ltr">Hi Daniele,
<div><br>
</div>
<div>can you share what your script look like?</div>
<div><br>
</div>
<div>Seb</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Jun 5, 2014 at
1:56 AM, Daniele Obiso <span dir="ltr"><<a href="mailto:daniele.obiso@phitecingegneria.it" target="_blank">daniele.obiso@phitecingegneria.it</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi All,<br>
<br>
i'm writing here because i would understand
better the functionality of pvbatch in
Paraview.<br>
<br>
At moment i'm able to run Paraview in batch
launching a python script, and it works
good.<br>
<br>
Here the line command i launch:<br>
<u><i>/software/Paraview/ParaView-3.12.0-Linux-x86_64/lib/paraview-3.12/mpirun
-np 6
/software/Paraview/ParaView-3.12.0-Linux-x86_64/bin/pvbatch
python_script.py </i></u><br>
<br>
The problem is that monitoring at processors
loads and memory consumption, it seems that
it's actually working on one single
processor; in fact if i switch to <i>-np 2</i>
or even <i>-np1</i> nothing changes in
terms of computing time.<br>
This is happening with various Paraview
versions (3.10 -3.12-4.1); is there
something missing in the line command? Some
other options? Are some Paraview filters
just working as serial?<br>
<br>
<br>
<br>
<br>
Another question would be about running
pvbatch on clusters without graphic cards: i
know it's possible, compiling Paraview with
OSMesa, and adding in the command line the
option <br>
--<i>use-offscreen-rendering</i>. Could
someone clarify also this point?<br>
<br>
Thank you all in advance!<span><font color="#888888"><br>
Daniele<br>
<br>
<br>
</font></span></div>
<br>
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