# mpi & domain decomp w multiblock
**URL:** https://discourse.paraview.org/t/mpi-domain-decomp-w-multiblock/1475
**Category:** ParaView Support
**Created:** [March 14, 2019, 4:55pm UTC](https://discourse.paraview.org/t/mpi-domain-decomp-w-multiblock/1475 "2019-03-14T16:55:28Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@paraview](https://discourse.paraview.org/u/paraview)
#### Post date: [March 14, 2019, 4:55pm UTC](https://discourse.paraview.org/t/mpi-domain-decomp-w-multiblock/1475/1 "2019-03-14T16:55:28Z")
HI, I have a multiblock dataset that has 9 blocks, When I use N mpi ranks, ParaView is (this is in 5.6) splitting each of the 9 blocks N ways so that each rank is given 1/N the original block. I’d like to disable this feature if possible. Can you tell me how to do so?
Thank you
Burlen
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### Author:  [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)
#### Post date: [March 14, 2019, 6:59pm UTC](https://discourse.paraview.org/t/mpi-domain-decomp-w-multiblock/1475/2 "2019-03-14T18:59:29Z")
this totally depends on the data producer / reader. ParaView doesn’t care which way or if the blocks are actually split among ranks.
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### Author:  [@paraview](https://discourse.paraview.org/u/paraview)
#### Post date: [March 27, 2019, 5:15pm UTC](https://discourse.paraview.org/t/mpi-domain-decomp-w-multiblock/1475/3 "2019-03-27T17:15:18Z")
Sounds like it’s a feature of the vtk XML multiblock reader then, and apparently it can’t be disabled with out doing some coding.