Quantum error correction codes can now be decoded in real-time using high-performance computing, a crucial step towards building scalable fault-tolerant quantum computers. This development enables the processing of syndrome measurements and determination of corrections within microseconds, thereby preventing data backlog. As the number of logical qubits increases, significant computational power is required to maintain real-time decoding capabilities. Researchers have successfully leveraged high-performance computing to achieve this goal, paving the way for more robust and efficient quantum computing systems. The ability to decode quantum error correction codes in real-time is essential for large-scale quantum computing applications, as it ensures the integrity of quantum data and prevents errors from propagating. This breakthrough has significant implications for the field of quantum computing, particularly in the context of cryptography and secure data transmission, so it matters to practitioners because it brings us closer to realizing the full potential of quantum computing and addressing its associated security challenges1.