I am doing two things at the same time: testing IQS (Intel QS), and how to integrate it with Java.
One option (preferably) is using GraalVM. For it I need first to now how to compile and integrate it in Java with Quarkus or Spring Native.
The second option will be generating wrappers/proxies to IQS library. This is interesting as I can write the circuits in Java directly.
The third option is somehow run the executable and get the output. Not very fond of this solution, as it is very naïve.
Checkout and compile intel-qs. Also make sure both this project and intel-qs are in the same folder.
Then run: ´´´ $ g++ qengine.cpp -liqs -o qengine ´´´
With it I can compile and run everything in one single place. I don't need to learn how to write a REST api in C++ and I don't need to struggle to find a Quantum Simulator written in Java.
But the problem is making it working. First I need to compile the c++ code into bytecode, what I'm been failing so far.
Before exploring this simulator, I need to make sure it can be compiled using GraalVM. After that, I will try to reproduce more complex circuits.
´´´ $ swig -c++ -java -package com.github.brunopacheco1.qengine qengine.i $ g++ -c -fpic qengine.cpp qengine_wrap.cxx -liqs -I/home/bruno/dev/graalvm-ce-java17-22.2.0/include/linux -I/home/bruno/dev/graalvm-ce-java17-22.2.0/include $ g++ -shared -liqs qengine.o qengine_wrap.o -o libqengine.so $ sudo cp libqengine.so /usr/lib/libqengine.so ´´´
I'll be trying to compile using GraalVM.
If for any reason I get frustrated, I will try to create proxies to IQS. It looks like there are tools to support this wrapping, namingly SWIG.
Breaking through this barrier, the following step will be writting a quantum circuit that reflex a very simple rules matrix.
After that, a very simple microservice will be created to expose it. I may use Quarkus, to compile to native.
I need to benchmark it against a similar matrix implementation, but using Kogito, also compiled to native.
The idea is to compare memory consumption and throughput.