# Maximum size of a jvec file

**URL:** https://discourse.paraview.org/t/maximum-size-of-a-jvec-file/7832
**Category:** ParaView Support
**Created:** [August 18, 2021, 11:25am UTC](https://discourse.paraview.org/t/maximum-size-of-a-jvec-file/7832 "2021-08-18T11:25:09Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![mariavd](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/b4bc9f/32.png) [@mariavd](https://discourse.paraview.org/u/mariavd)
#### Post date: [August 18, 2021, 11:25am UTC](https://discourse.paraview.org/t/maximum-size-of-a-jvec-file/7832/1 "2021-08-18T11:25:09Z")

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Hello,

I have a 11 GB vti file that is taking forever to open in version 5.9.1 on Windows with MPI on. After 2 hours I killed the process and tried the latest nightly version without MPI but it was stuck, too. An older one, 5.2, says that it does not recognise the file format, however, we have produced the vti file with the same code as hundreds of other times. I can show the header of the vti file but due to its size it is unreasonable to try sharing it in any way, I believe.

```auto
<?xml version="1.0"?>
 <VTKFile type="ImageData" version="0.1" byte_order="LittleEndian">
   <ImageData WholeExtent=" 0 680 0 680 0 400 " Origin=" -17.000000000000000 -17.000000000000000 -10.000000000000000 " Spacing=" 5.0000000000000003E-002 5.0000000000000003E-002 5.0000000000000003E-002 ">
   <Piece Extent=" 0 680 0 680 0 400 ">
   <PointData Scalars="scalars">
   <DataArray Name="vectors" type="Float64" NumberOfComponents="3" Format="ascii">
  0.000000E+00 0.000000E+00 0.000000E+00
  0.000000E+00 0.000000E+00 0.000000E+00
  0.000000E+00 0.000000E+00 0.000000E+00
  0.000000E+00 0.000000E+00 0.000000E+00

```

The end of the file is also sane

```auto

  0.000000E+00
  0.000000E+00
  0.000000E+00
  0.000000E+00
  0.000000E+00
  0.000000E+00
    </CellData>
    </Piece>
    </ImageData>
 </VTKFile>

```

Best regards,  
Maria

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<div class="post-metadata">

### Author: ![mariavd](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/b4bc9f/32.png) [@mariavd](https://discourse.paraview.org/u/mariavd)
#### Post date: [November 17, 2021, 8:48pm UTC](https://discourse.paraview.org/t/maximum-size-of-a-jvec-file/7832/2 "2021-11-17T20:48:53Z")

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I guess the issue still has not been handled but I can update the thread that a 450 MB jvec file obtained after a calculation on 8 million points creates the same problem. I tested on version 5.10.0-RC1, the newest stable version available from the Downloads section. It is the version with MPI but I tested both with it enabled and off from the settings. I have a powerful workstation with a Ryzen 5950X and 32 GB RAM, so the resources are enough. I tried debugging with Process Explorer and it seems that at some stage it just stops reading the file and hangs. I would be willing to assist with sorting out the problem because it would be very beneficial for our group to perform the analysis of this calculation.

Best regards,  
Maria

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [November 18, 2021, 6:57am UTC](https://discourse.paraview.org/t/maximum-size-of-a-jvec-file/7832/3 "2021-11-18T06:57:10Z")

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Can you try on Linux ?