# Unable to allocate memory for merge block during coprocessing

**URL:** https://discourse.paraview.org/t/unable-to-allocate-memory-for-merge-block-during-coprocessing/2359
**Category:** ParaView Support
**Created:** [August 5, 2019, 3:26pm UTC](https://discourse.paraview.org/t/unable-to-allocate-memory-for-merge-block-during-coprocessing/2359 "2019-08-05T15:26:40Z")
**Posts on this page:** 1
**Showing post:** 4

<div class="post-metadata">

### Author: ![kschau](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/k/a5b964/32.png) [@kschau](https://discourse.paraview.org/u/kschau)
#### Post date: [September 28, 2019, 3:39pm UTC](https://discourse.paraview.org/t/unable-to-allocate-memory-for-merge-block-during-coprocessing/2359/4 "2019-09-28T15:39:30Z")

</div>

See this post for solution

> [@Inconsistent memory behavior in Catalyst](https://discourse.paraview.org/t/inconsistent-memory-behavior-in-catalyst/2444):
>
> I have implemented Catalyst into a Fortran-MPI research code. For now I am using the writers to write out reduced data sets like plotOverLine and Slices for visualization and analysis later. I have built ParaVeiw 5.6.1 from source and that has all gone well. The issue I am running into is, at random intervals, ParaView throwing ERROR: In ParaView/VTK/Common/Core/vtkGenericDataArray.txx, line 452 vtkIdTypeArray (0x2aab12f03e40): Unable to allocate XXXXX elements of size 8 bytes. This happen…

---

_[View the full topic](https://discourse.paraview.org/t/unable-to-allocate-memory-for-merge-block-during-coprocessing/2359)._