# CalculiX with Intel's MPI cluster sparse solver

**URL:** <https://calculix.discourse.group/t/calculix-with-intels-mpi-cluster-sparse-solver/897>\
**Category:** Uncategorized\
**Created:** [December 8, 2021, 6:30pm UTC](https://calculix.discourse.group/t/calculix-with-intels-mpi-cluster-sparse-solver/897 "2021-12-08T18:30:25Z")\
**Posts on this page:** 1\
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**Author:** ![feacluster](https://yyz2.discourse-cdn.com/free1/user_avatar/calculix.discourse.group/feacluster/32/394_2.png) [@feacluster](https://calculix.discourse.group/u/feacluster)\
**Post date:** [November 21, 2022, 1:27am UTC](https://calculix.discourse.group/t/calculix-with-intels-mpi-cluster-sparse-solver/897/22 "2022-11-21T01:27:52Z")

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I think it looks correct. I get the same files with differences. I think most are due to differences in the eigensolver and natual frequencies. See discussion on that topic here:

> [@Totally different results between Spooles and Pardiso for frequency calculation](https://calculix.discourse.group/t/totally-different-results-between-spooles-and-pardiso-for-frequency-calculation/872):
>
> I am trying to make sense of why results are totally different for the [simplebeampipe3.inp](https://www.feacluster.com/CalculiX/ccx_2.18/doc/ccx/input_deck_viewer.php?input_deck=simplebeampipe3.inp) verification model. When comparing spooles to pardiso, the Eigenvalues are the same, which is good. But the rest of the results are way off, i.e: P A R T I C I P A T I O N F A C T O R S E F F E C T I V E M O D A L M A S S T O T A L E F F E C T I V E M A S S displacements (vx,vy,vz) for set NALL and time 0.1000000E+01 Here is the reference output from Spooles: …

What kind of google cloud machines are you going to run on? To see speedup you will need to use two dedicated machines with all the available cpus on each .

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