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[Ziyu Wang <question700587@xxxxxxxxxxxxxxxxxxxxx>]

Question #700587 on Yade changed:
https://answers.launchpad.net/yade/+question/700587

    Status: Needs information => Open

Ziyu Wang gave more information on the question:
Hello,Jan
In fact, I don't know how to deal with my last question, and I don't want to reopen the same question.Anyway, I'm very sorry...

The following is the information from printAllVersions()
----------------------------------------------------
Yade version   :  20220208-6309~ebf9df3~bionic1
Yade features  :  LOGGER USEFUL_ERRORS VTK OPENMP GTS QT5 CGAL PFVFLOW PFVFLOW LINSOLV MPI TWOPHASEFLOW LS_DEM FEMLIKE GL2PS LBMFLOW THERMAL PARTIALSAT POTENTIAL_PARTICLES POTENTIAL_BLOCKS
Yade config dir:  ~/.yadedaily
Yade precision :  53 bits, 15 decimal places, without mpmath, PrecisionDouble
```

Libraries used :

| library       | cmake                | C++                 |
| ------------- | -------------------- | ------------------- |
| boost         | 106501               | 1.65.1              |
| cgal          |                      | 4.11                |
| clp           | 1.16.11              | 1.16.11             |
| cmake         | 3.10.2               |                     |
| coinutils     | 2.10.14              | 2.10.14             |
| compiler      | /usr/bin/c++ 7.5.0   | gcc 7.5.0           |
| eigen         | 3.3.4                | 3.3.4               |
| freeglut      | 2.8.1                |                     |
| gl            |                      | 20190911            |
| ipython       | 5.5.0                |                     |
| metis         |                      | 5.1.0               |
| mpi           | 3.1                  | ompi:2.1.1          |
| mpi4py        | 2.0.0                |                     |
| mpmath        | 1.0.0                |                     |
| openblas      |                      |  OpenBLAS 0.2.20    |
| python        | 3.6.9                | 3.6.9               |
| qglviewer     |                      | 2.6.3               |
| qt            |                      | 5.9.5               |
| sphinx        | 1.6.7-final-0        |                     |
| sqlite        |                      | 3.22.0              |
| suitesparse   | 5.1.2                | 5.1.2               |
| vtk           | 6.3.0                | 6.3.0               |

```
Linux version  :  Ubuntu 18.04.6 LTS
Architecture   :  amd64
Little endian  :  True
-------------------------------------------------------------

About hardware:
Memory 15.6GiB
processor AMD® Ryzen 7 4800h with radeon graphics × 16 
Graphics card NVIDIA GeForce RTX 2060/PCIe/SSE2
disk 101.7 GB

I run the simulation with yadedaily -j 12 script.py(actually no matter
how many threads or single thread, the running speed is 3.0/s,So I think
it is not normal.)

I follow your suggestion and run the timing.stats(),but as follows:
In [10]: timing.stats()
Name                                                    Count                 Time            Rel. time
-------------------------------------------------------------------------------------------------------
ForceResetter                                         0                0.0us                           
InsertionSortCollider                                 0                0.0us                           
"iloop"                                               0                0.0us                           
GlobalStiffnessTimeStepper                            0                0.0us                           
TriaxialStressController                              0                0.0us                           
"flow"                                                0                0.0us                           
"thermal"                                             0                0.0us                           
"VTKrec"                                              0                0.0us                           
NewtonIntegrator                                      0                0.0us                           
"recorder"                                            0                0.0us                           
PyRunner                                              0                0.0us                           
TOTAL                                                                  0.0us 

I do not know what happened..I run another normal script and run
timing.stats(), and all the data is still 0..

Thanks for help!

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