# Thermal Transient Analysis
**URL:** https://calculix.discourse.group/t/thermal-transient-analysis/1808
**Category:** Uncategorized
**Created:** [September 11, 2023, 2:18pm UTC](https://calculix.discourse.group/t/thermal-transient-analysis/1808 "2023-09-11T14:18:01Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Antonio\_Crupi](https://calculix.discourse.group/u/Antonio_Crupi)
#### Post date: [September 11, 2023, 2:18pm UTC](https://calculix.discourse.group/t/thermal-transient-analysis/1808/1 "2023-09-11T14:18:01Z")
Hi Calculix comunity, I submitted today a simpre Heat Transient Transfer Analysis on a single component with Pardiso solver as suggested. I found this error message:
iteration 1
Using up to 1 cpu(s) for the heat flux calculation.
Using up to 1 cpu(s) for the symmetric stiffness/mass contributions.
\*ERROR in nonlingeo: the PARDISO library is not linked
Job failed - no results exist.
Process elapsed time: 81.832 s
Suggestions?
Thanks and Have a nice Day
---
### Author:  [@Calc\_em](https://calculix.discourse.group/u/Calc_em)
#### Post date: [September 11, 2023, 2:20pm UTC](https://calculix.discourse.group/t/thermal-transient-analysis/1808/2 "2023-09-11T14:20:33Z")
To use Pardiso, you need some additional libraries. You can find them here: [https://staff.tu.kielce.pl/rokach/instr/misc/ccx\_220.7z](https://staff.tu.kielce.pl/rokach/instr/misc/ccx_220.7z)
---
### Author:  [@Antonio\_Crupi](https://calculix.discourse.group/u/Antonio_Crupi)
#### Post date: [September 11, 2023, 2:35pm UTC](https://calculix.discourse.group/t/thermal-transient-analysis/1808/3 "2023-09-11T14:35:32Z")
Thanks, I’ll try . Where have I to put this file in the installation directory? In the folder named “lib” ?
---
### Author:  [@Calc\_em](https://calculix.discourse.group/u/Calc_em)
#### Post date: [September 11, 2023, 2:46pm UTC](https://calculix.discourse.group/t/thermal-transient-analysis/1808/4 "2023-09-11T14:46:16Z")
It should work if you put them in the same folder as the CalculiX executable. Like it is in that package:
