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LDAK is a command-line software, that can be run on either a Linux-base PC or a Mac. I strongly recommend the Linux version, as it will often be much faster than the Mac version. LDAK does not run on Windows, so I suggest you instead log into a Linux server (for example, you can use putty to ssh into your local computer cluster).
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To run LDAK using Linux:
1 - Download and unzip the Linux executable file (link at the bottom).
2 - Open a terminal window (on my Linux, I go to Applications / System Tools / Terminal)
3 - Type the name of the file; for example
/home/doug/Downloads/ldak5.2.linux
or if you are in the same folder as the executable file, you can simply type
./ldak5.2.linux
If compatible with your system, this should produce the LDAK welcome screen. Note that if your computer tells you that you do not have permission to run the file, then first run
chmod a+x ldak5.2.linux
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The pre-compiled Linux version uses the Intel MKL Libraries. The command I used was
gcc -O3 -o ldak5.2.linux source/ldak.c source/libqsopt.linux.a -Wl,--start-group ${MKLROOT}/lib/intel64/libmkl_intel_lp64.a ${MKLROOT}/lib/intel64/libmkl_gnu_thread.a ${MKLROOT}/lib/intel64/libmkl_core.a -Wl,--end-group -lgomp -lpthread -lm -ldl -m64 -I${MKLROOT}/include -lz -fopenmp -static
Should you wish to compile a Linux version yourself, please download and unzip the source code, then from inside that folder run a command similar to
gcc -O3 -o ldak5.2 ldak.c libqsopt.linux.a -lblas -llapack -lm -lz -fopenmp
chmod a+x ldak5.2
The exact command will depend on which libraries you have installed. This should take less than a minute to complete. Note that if you do not have Intel MKL Libraries installed, you will be required to turn off the MKL libraries, by editing Line 63 of ldak.c (replace #define MKL 1 with #define MKL 0). If you are required to do this, then your self-compiled version will likely be slower than the pre-compiled version.
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To run LDAK on a Mac:
1 - Download and unzip the Mac executable file (link at the bottom).
2 - Open a terminal window (go to Finder / Applications / Utilities)
3 - Type the name of the file; for example
Downloads/ldak5.2.mac
or if you are in the same folder as the executable file, you can simply type
./ldak5.2.mac
If compatible with your system, this should produce the LDAK welcome screen. Note that if your computer tells you that you do not have permission to run the file, then first run
chmod a+x ldak5.2.mac
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To compile a Mac version yourself, please download and unzip the source code, then from inside that folder run a command similar to
gcc -O3 -o ldak5.2.mac ldak.c libqsopt.mac.a -lblas -llapack -lm -lz
chmod a+x ldak5.2.mac
The exact command will depend on your system and which libraries you have installed. This should take about a minute to complete. Note that you will be required to turn off the MKL libraries, by editing Line 63 of ldak.c (replace #define MKL 1 with #define MKL 0). Further, it may be necessary to add --framework accelerate to the above command, and/or to install xcode, by first running the command
xcode-select --install
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Current LDAK Executables. Please note that there are no longer separate serial and parallel versions of the Linux executable; to run the parallel version, you should use the option --max-threads (see Parallel Computing for more details).
Click here to download LDAK5.2.linux
Click here to download LDAK5.2.mac
Click here to download the LDAK source code
Click here to download a README file
Beta Linux Executable. This is a (slightly) newer Linux version of LDAK. I suggest you only use this version if Doug has asked you to use it.
Click here to download LDAK5.2.beta
Old LDAK Executables. Click here to see old versions of LDAK.
