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[Question #690973]: running on a server is slower than on a PC

 

New question #690973 on Yade:
https://answers.launchpad.net/yade/+question/690973

Dear friend

I  meet a very strange question.   Our Lab.  take a new server and I install the yade on the server. But I find that running on the server is slower than on the PC. 

(1)	The hardware and configuration of the server is 
     CPU: Intel XEON Gold 6146  *  4,  3.2GH   96 core
     Memory : 256GB
     OS: Ubuntu 18.04  64bits
     Yade: https://gitlab.com/yade-dev/trunk

(2)	 The hardware and configuration of the PC 
    CPU : I7-9700k 3.6GH     8 core
    Memory :32GB
    OS Ubunut 18.04 64bit
    Yade: https://gitlab.com/yade-dev/trunk

I operate the server by remote desktop -- VNC viewer

I cmake and install the yade like this:

   cd ~/myYade/build
   cmake -DCMAKE_INSTALL_PREFIX=../install ../trunk -DNOSUFFIX=ON -DENABLE_OPENMP=ON
   make -j96
   make install

I run the yade like this:
(1)	On the server 
~/PycharmProjects/myname/yade/Yade20200519_for_Journal of Coal$    ~/myYade/install/bin/yade -j96 20200522.py

(2)	On the PC
~/PycharmProjects/myname/yade/Yade20200519_for_Journal of Coal$    ~/myYade/install/bin/yade -j8 20200522.py


I open the yade simulation, show 3D

The speed of simulation process on server is slower than on the PC, and it is very very obviously. 

When I make the yade : make -j96. The speed is very quickly. But when I running the yade is slower than on the PC. 

The server supplier can insure that the hardware of the server is right. 

Please kindly help me. If the OS on server is right? If process of installation yade on server right? If the running the yade is right?  It makes me very confusion. 

Thank you very much.

Yang Yi







        

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