When working with Julia, it is common to encounter situations where you need to load external libraries or dependencies. In this article, we will explore different ways to load the Scalapack library from the Intel MKL library inter dependencies.
Option 1: Using the Libdl package
The Libdl package in Julia provides a way to load dynamic libraries at runtime. To load the Scalapack library, you can use the following code:
using Libdl
# Specify the path to the Scalapack library
const LIB_PATH = "/path/to/scalapack/library.so"
# Load the library
Libdl.dlopen(LIB_PATH)
This code uses the `dlopen` function from the Libdl package to load the Scalapack library. Make sure to replace `”/path/to/scalapack/library.so”` with the actual path to the Scalapack library on your system.
Option 2: Using the PyCall package
If you have the PyCall package installed, you can also load the Scalapack library using Python’s ctypes module. Here’s how you can do it:
using PyCall
# Load the ctypes module from Python
ctypes = pyimport("ctypes")
# Specify the path to the Scalapack library
const LIB_PATH = "/path/to/scalapack/library.so"
# Load the library
ctypes.CDLL(LIB_PATH)
This code uses the `CDLL` function from Python’s ctypes module to load the Scalapack library. Again, make sure to replace `”/path/to/scalapack/library.so”` with the actual path to the Scalapack library on your system.
Option 3: Using the PackageCompiler package
If you want to create a standalone executable that includes the Scalapack library, you can use the PackageCompiler package. Here’s how you can do it:
using PackageCompiler
# Specify the path to the Scalapack library
const LIB_PATH = "/path/to/scalapack/library.so"
# Compile the package with the Scalapack library
create_app("MyApp", "/path/to/output", sysimage = LIB_PATH)
This code uses the `create_app` function from the PackageCompiler package to create a standalone executable that includes the Scalapack library. Replace `”MyApp”` with the name of your application, `”/path/to/output”` with the desired output path, and `LIB_PATH` with the actual path to the Scalapack library on your system.
After exploring these three options, it is clear that the best option depends on your specific use case. If you only need to load the Scalapack library temporarily, Option 1 using the Libdl package is the simplest and most straightforward. However, if you need to use the Scalapack library extensively or want to create a standalone executable, Option 3 using the PackageCompiler package is the better choice.
