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Install VNC Server on CentOS 7

Oct 29, 2020 | 3116 views

#Linux #InstallGuide

VNC with Default desktop [Recommended]

Refer to:  


## install vncserver
yum install tigervnc-server xorg-x11-fonts-Type1

## copy vnc systemc config file, :3 is an example, other number can be used
cp /lib/systemd/system/[email protected] /etc/systemd/system/vncserver@:3.service

## replace  with a user name
grep USER /lib/systemd/system/[email protected]
# 2. Replace  with the actual user name and edit vncserver
ExecStart=/usr/bin/vncserver_wrapper  %i

## change into 
# su - 
## run below command to set user's vnc password 
$ vncserver

VNC with XFCE 

Refer to 

Beware xstartup file requires to unset variables SESSION_MANAGER and DBUS_SESSION_BUS_ADDRESS as below describles.


--------- Install necessary packages in root ------
  881  yum -y install epel-release
  883  yum groupinstall "Xfce" -y
  884  yum -y install tigervnc-server tigervnc-server-minimal
  885  history
--------- login to normal user ------------
	 # su - user
	1  ls
	## set password
    2  vncserver
    3  cd ~/.vnc/
    4  vncserver -list

       cp /etc/X11/Xresources ~/.Xresources

    5  cp xstartup{,.bak}
	## EDIT xstartup as below
    7  cat xstartup
#!/bin/bash

unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

xrdb $HOME/.Xresources
startxfce4 &


For Ubuntu 16.04: How to Install and Configure VNC on Ubuntu 16.04 

For Ubuntu 18.04: How to Install and Configure VNC on Ubuntu 18.04 

Comments: 0

Install CUDA 11.1 and Pytorch 1.7 on CentOS 7

Oct 28, 2020 | 2503 views

#Linux #InstallGuide



How to Install CUDA 11.1 + Pytorch 1.7


=================================================
Install CUDA 11.1
=================================================

下载:https://developer.download.nvidia.com/compute/cuda/11.1.0/local_installers/cuda-repo-rhel7-11-1-local-11.1.0_455.23.05-1.x86_64.rpm
文档:https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html



===== Step One:
 
 Pre-installation Actions [https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#pre-installation-actions] 
 
!!! Important: 
You may need to update kernel if ` yum install kernel-devel-$(uname -r) kernel-headers-$(uname -r)` fails.
How to update kernel: `yum install kernel kernel-tools kernel-tools-libs` [https://www.golinuxcloud.com/how-to-update-kernel-rhel-centos-7-yum-linux/] 



===== Step Two: 
 Package Manager Installation [https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#package-manager-installation]

===== Step Three:
 Post-installation Actions [https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#post-installation-actions]

===== Step Four: Install proper drivers for Graphic cards
[ https://www.server-world.info/en/note?os=CentOS_7&p=nvidia]

===== Step Five: Compile samples
# cuda-install-samples-11.1.sh  [dir]
# make -k -j

检查命令
nvidia-smi
lspci | grep -i nvi
./bin/x86_64/linux/release/deviceQuery

当中可能遇到的错误情况处理:
1. centos7 yum 错误 This system is not registered with an entitlement server [https://blog.csdn.net/whatday/article/details/106106767]
2. cudaNvSci.h: fatal error: nvscibuf.h: No such file or directory [https://cloud.tencent.com/developer/article/1584631] 

其他参考:
1. https://www.server-world.info/en/note?os=CentOS_7&p=cuda&f=4 (samples的测试)
2. https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#abstract (Official installation guide)

=================================================
Install Pytorch 1.7
=================================================
https://pytorch.org/get-started/locally/

Recommend using conda to install Pytorch, refer to above link:
conda install pytorch torchvision torchaudio cudatoolkit=11.0 -c pytorch

For pip, run this Command: pip install torch==1.7.0+cu110 torchvision==0.8.1+cu110 torchaudio===0.7.0 -f https://download.pytorch.org/whl/torch_stable.html 

Test code after successful installation from [https://varhowto.com/install-pytorch-cuda-10-2/]


How to install CUDA 10.2 + Pytorch 1.6 on CentOS 7


=================================================
Install CUDA 10.2 
=================================================

Download:https://developer.nvidia.com/cuda-10.2-download-archive?target_os=Linux&target_arch=x86_64&target_distro=CentOS&target_version=7&target_type=rpmnetwork
Document:https://docs.nvidia.com/cuda/archive/10.2/cuda-installation-guide-linux/index.html



===== Step One:
 
 Pre-installation Actions [https://docs.nvidia.com/cuda/archive/10.2/cuda-installation-guide-linux/index.html#pre-installation-actions] 
 
!!! Important: 
You may need to update kernel if ` yum install kernel-devel-$(uname -r) kernel-headers-$(uname -r)` fails.
How to update kernel: `yum install kernel kernel-tools kernel-tools-libs` [https://www.golinuxcloud.com/how-to-update-kernel-rhel-centos-7-yum-linux/] 



===== Step Two: 
 Package Manager Installation [https://docs.nvidia.com/cuda/archive/10.2/cuda-installation-guide-linux/index.html#package-manager-installation]

===== Step Three:
 Post-installation Actions [https://docs.nvidia.com/cuda/archive/10.2/cuda-installation-guide-linux/index.html#post-installation-actions]

===== Step Four: Install proper drivers for Graphic cards
[ https://www.server-world.info/en/note?os=CentOS_7&p=nvidia]

===== Step Five: Compile samples
# cuda-install-samples-10.2.sh [directory]
# make -k -j

当中可能遇到的错误情况处理:
1. centos7 yum 错误 This system is not registered with an entitlement server [https://blog.csdn.net/whatday/article/details/106106767]
2. cudaNvSci.h: fatal error: nvscibuf.h: No such file or directory [https://cloud.tencent.com/developer/article/1584631] 

其他参考:
1. https://www.server-world.info/en/note?os=CentOS_7&p=cuda&f=4 (samples的测试)
2. https://docs.nvidia.com/cuda/archive/10.2/cuda-installation-guide-linux/index.html#post-installation-actions (Official installation guide)

=================================================
Install Pytorch 1.6
=================================================
-------First: Install Python-3.8.1 (Follow from source guide [https://phoenixnap.com/kb/how-to-install-python-3-centos-7] )---------

How to Install PyTorch with CUDA 10.2: https://varhowto.com/install-pytorch-cuda-10-2/

Comments: 0

How to compile and install Octopus 9.1 with OpenMPI on CentOS 7

Oct 22, 2020 | 1509 views

#InstallGuide

!!! Recommend: You can also compile the latest Octopus with gcc version 8 with the same procedure. 

================= 如何编译安装Octopus 9.1 =====================

说明!!!:using mpif90 as FC compiler when compiling blas, lapack, libxc libraries


According to "Normally it is necessary to compile all Fortran libraries with the same compiler. If you have trouble, try to look for help in the Octopus mailing list." [Testing_your_build]


参考资料:

1. Octopus安装-算盘

2. 安装 Octopus

3. wiki Manual:Building_from_scratch

4. wiki Manual:Installation#Testing_your_build

5. https://octopus-code.org/wiki/Manual:Installation


软件安装到/opt/目录下,如下

[root@mgt lapack-3.9.0]# ls -F /opt/ | more

BLAS-3.8.0/

fftw-3.3.8/

gsl-2.4/

HOW-Octopus-9.1-Was-Installed.txt

lapack-3.9.0/

libxc-4.3.4/

octopus-9.1/

openmpi-4.0.5/


安装一些必须的工具包:

---------------------

yum install -y autoconf automake libtool  


--------------------

环境变量被更改到/etc/profile

--------------------

export LD_LIBRARY_PATH=/opt/gsl-2.4/lib:$LD_LIBRARY_PATH

export LD_LIBRARY_PATH=/opt/openmpi-4.0.5/lib:$LD_LIBRARY_PATH

export LD_LIBRARY_PATH=/opt/libxc-4.3.4//lib:$LD_LIBRARY_PATH

export LD_LIBRARY_PATH=/opt/fftw-3.3.8//lib:$LD_LIBRARY_PATH


export PATH=/opt/gsl-2.4/bin:$PATH

export PATH=/opt/openmpi-4.0.5/bin:$PATH

export PATH=/opt/octopus-9.1/bin:$PATH

export PATH=/opt/libxc-4.3.4//bin:$PATH

export PATH=/opt/fftw-3.3.8//bin:$PATH



=== 1. 编译安装openmpi-4.0.5 =======

Tutorial refer to https://www.jianshu.com/p/7309d3b1c735

Reference:

- openmpi building#easy-build


wget https://download.open-mpi.org/release/open-mpi/v4.0/openmpi-4.0.5.tar.bz2

./configure --prefix=/opt/openmpi-4.0.5

make -j

make -j install

cd examples/

make

./hello_c


echo 'export LD_LIBRARY_PATH=/opt/openmpi-4.0.5/lib:$LD_LIBRARY_PATH' >> /etc/profile

echo 'export PATH=/opt/openmpi-4.0.5/bin:$PATH' >> /etc/profile



=== 2. 编译安装 BLAS-3.8.0/  ===

[root@mgt BLAS-3.8.0]# grep -v '^#' make.inc

SHELL = /bin/sh

PLAT = _LINUX

FORTRAN  = mpif90

OPTS     = -O3

DRVOPTS  = $(OPTS)

NOOPT    =

LOADER   = mpif90

LOADOPTS =

ARCH     = ar

ARCHFLAGS= cr

RANLIB   = ranlib

BLASLIB      = blas$(PLAT).a


mkdir -pv /opt/BLAS-3.8.0/

cp blas_LINUX.a /opt/BLAS-3.8.0/libblas.a



=== 3. 编译安装 lapack-3.9.0 ===

mv make.inc.example make.inc

### EDIT make.inc like below

[root@mgt lapack-3.9.0]# grep FC make.inc

#  Modify the FC and FFLAGS definitions to the desired compiler

FC = mpif90


make -j

cd ..

tar cvf - lapack-3.9.0/*.a | tar xvf - -C /opt/


=== 可选但此教程有安装:编译安装 scalapack-2.1.0 ======

Tutorial can refer to 安装scalapack


wget https://github.com/Reference-ScaLAPACK/scalapack/archive/v2.1.0.tar.gz


[root@mgt scalapack-2.1.0]# grep -v '^#' SLmake.inc | grep -E 'BLAS|LAPACK'

SCALAPACKLIB  = libscalapack.a

BLASLIB       = /opt/BLAS-3.8.0/blas_LINUX.a

LAPACKLIB     = /opt/lapack-3.9.0/liblapack.a

LIBS          = $(LAPACKLIB) $(BLASLIB)


make -j

cd ..

tar cvf - scalapack-2.1.0 | tar xvf - -C /opt/


=== 4. 编译安装 libxc-4.3.4 ===

[root@mgt libxc-4.3.4]#


autoreconf -i

./configure --prefix=/opt/libxc-4.3.4 CC=gcc CXX=g++ FC=mpif90

make -j

make -j install


echo 'export LD_LIBRARY_PATH=/opt/libxc-4.3.4//lib:$LD_LIBRARY_PATH' >> /etc/profile

echo 'export PATH=/opt/libxc-4.3.4//bin:$PATH' >> /etc/profile


=== 5. 编译安装 gsl-2.4 =======

wget http://ftp.gnu.org/gnu/gsl/gsl-2.4.tar.gz

tar xvzf gsl-2.4.tar.gz

cd gsl-2.4

[root@mgt gsl-2.4]#

mkdir build-gsl

cd build-gsl/

../configure --prefix=/opt/gsl-2.4

make -j 

make -j install


echo 'export LD_LIBRARY_PATH=/opt/gsl-2.4/lib:$LD_LIBRARY_PATH' >> /etc/profile

echo 'export PATH=/opt/gsl-2.4/bin:$PATH' >> /etc/profile


==== 6. 编译安装 fftw-3.3.8 ==========

wget http://fftw.org/fftw-3.3.8.tar.gz

tar xzvf fftw-3.3.8.tar.gz

cd fftw-3.3.8/

ls

less README

./configure --prefix=/opt/fftw-3.3.8

make -j

make install

ls /opt/fftw-3.3.8/


echo 'export LD_LIBRARY_PATH=/opt/fftw-3.3.8//lib:$LD_LIBRARY_PATH' >> /etc/profile

echo 'export PATH=/opt/fftw-3.3.8//bin:$PATH' >> /etc/profile


======== FINAL: 编译安装 Octopus 9.1 =============


wget https://octopus-code.org/download/9.1/octopus-9.1.tar.gz


tar xzf octopus-9.1.tar.gz

cd octopus-9.1/

ls

./configure --prefix=/opt/octopus-9.1 --with-libxc-prefix=/opt/libxc-4.3.4/ --with-gsl-prefix=/opt/gsl-2.4/ --with-blas=/opt/BLAS-3.8.0/libblas.a --with-lapack="-L/opt/lapack-3.9.0 -ltmglib -llapack" --with-scalapack="-L/opt/scalapack-2.1.0 -lscalapack" --with-fftw-prefix=/opt/fftw-3.3.8/ --enable-mpi


make -j 

make install


echo 'export PATH=/opt/octopus-9.1/bin:$PATH' >> /etc/profile


# Test octopus 9.1 using a helloworld example 


Comments: 4

Zabbix-server Tutorial on Centos 7

Aug 28, 2020 | 872 views

#Linux #InstallGuide

Update on 2020/12/8:


IPMI with zabbix

  1. 利用zabbix通过IPMI监控服务器硬件 
  2. Template chooses "Template Server Chassis by IPMI“


Tutorials:

Configuring SELinux with zabbix: refer to here and here


Monitoring Tutorials:

Zabbix Related Tutorial:

On this page, we offer quick access to a list of tutorials related to Zabbix installation.





Comments: 0