install openmc,I meat problem again.

User Support
1

Dear sir:
Today I tried to install openmc with clone github.First, I chose ubuntu18.03.

Then I installed Anaconda, the purpose is to have a python environment, choose Anaconda3 5.1.0 version.

Then install prerequisites are needed.So I enter this code"sudo apt install gfortran g++ cmake libhdf5-dev",and installed git.

Finally, I successfully installed openmc and entered the code.
git clone https://github.com/mit-crpg/openmc.git
cd openmc
mkdir build && cd build
cmake …
make
sudo make install

My question is coming. When I type openmc-get-nndc-data, I am prompted that openmc is not found. Therefore, the cross section library cannot be downloaded.

I unpacked the nndc package you gave me last time and filled in the cross sections of the xml file.

After running openmc, the prompt failed to find the cross sections.xml file, so the operation failed.

Should be a problem with python? How should I solve the current problem?

2.After encountering this problem, I did not delete openmc, I installed openmc with conda install openmc command.

After that, I can download the nndc database, and openmc can find the cross sections.xml file.

I really want to know how to solve the git method. After installing openmc, I can’t download the nndc database.

Thank you.

Best wishes.
Tang.
2

Today, I have improved the method. Use git clone to successfully install openmc, download nndc database and run openmc. Because today I have been busy with this matter, very tired, no time to share solutions. I will make up if I have time, so that more people will know.

3

I chose the method of installing openmc from source.
First off all,I instal conda—Anaconda3 5.0.0 on ubuntu 18.04.Next step,I followed “Quick Install Quide”,“Instaling from Source on Ubuntu 15.04+”.
I believe that everyone will do this step. After we clone source frome GitHub, and cd openmc. But we should execute this command: “pip install .”, after which reported an error, we will execute 1. “conda install gxx_linux-64”, 2. “pip install numpy” . After the two instructions are executed, we will re-execute the “pip install .” command.
Finally, compile openmc, and follow these commands to execute “mkdir build && cd build”, “cmake …”, “make”, “sudo make install”.
After successfully installing openmc, you can try “openmc-get-nndc-data” again. Can you successfully download the cross sections library?

在 2018年12月10日星期一 UTC+8下午9:24:16，jiawei tang写道：