Thursday, May 18, 2017

Installing Octave with HDF5 on CentOS 6.8 with yum

If you are installing octave on CentOS6 and you wish to install HDF5, you may want to pull HDF5 from EPEL instead of RPMFORGE. You may have both repositories so you have to disable RPMFORGE first

# yum-config-manager --disable rpmforge

Install Octave with HDF5

# yum install octave hdf5 hdf5-devel

Monday, April 17, 2017

Generating public keys from a SSH private key

If you just need to generate a Public Key from SSH Private Key, you will need to
# ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub
where  -y output the public key

References:
  1. How do I retrieve the public key from a SSH private key?

Wednesday, April 12, 2017

Installing OpenCV on CentOS 6 on yum

Installing OpenCV using CentOS 6 using yum is very straightforward. For CentOS 6,
# yum install python-devel python-nose python-setuptools gcc gcc-gfortran gcc-c++ blas-devel lapack-devel atlas-devel

# yum install opencv

Monday, April 10, 2017

Managing MATLAB Users using MLM options for FlexLM

Step 1: Create a file to mlm.opt

Step 2: Edit your license.dat file
SERVER myMATLABLicense 00000000000000009
DAEMON MLM "/usr/local/MATLAB/R2016b/etc/MLM" port=1708 options="/usr/local/MATLAB/R2016b/etc/mlm.opt"
.....
.....

Step 3: Prepare mlm.opt
# Make user names and host names case insensitive when
# listed in a GROUP or HOST_GROUP.  This is not
# required but it is here to prevent some common errors.
GROUPCASEINSENSITIVE ON


# Define GROUP Users
GROUP MATLAB_BLOCK_USERS user1 user2 user3
GROUP MATLAB_INC_USERS user4 user5 user6


# EXCLUDE Users from MATLAB and selected Toolboxes
EXCLUDE "MATLAB asset_info=111111" GROUP MATLAB_BLOCK_USERS
EXCLUDE "Image_Toolbox asset_info=111111" GROUP MATLAB_BLOCK_USERS
EXCLUDE "Signal_Toolbox asset_info=111111" GROUP MATLAB_BLOCK_USERS


# RESERVE for selected for user1
RESERVE 1 "SIMULINK asset_info=111111" USER user1


# Restrict the number of licenses that can be used on machine "server1"
MAX 4 "MATLAB asset_info=111111" HOST server1


# To exclude ALL features 
EXCLUDEALL GROUP MATLAB_BLOCK_USERS


#Includes a user or pre-defined group of users, etc.
#Anyone not in an INCLUDEALL statement is not allowed to use these features. 
INCLUDEALL GROUP MATLAB_INC_USERS

References:
  1. https://www.mathworks.com/matlabcentral/answers/uploaded_files/2331/sampleMLM.opt
  2. The Options File
  3. Is there a way to administer FLEXnet based licenses? How do I create an Options file?