1+1 is not 2 in I/O: Interference Mitigation

I/O Scheduling is not an easy task. Some time ago, in the realm of HDD technology, our primary concern was sending (or receiving) data to the HDD in a well-organized manner, in large blocks to minimize disk movements. Every disk movement was a wasted time slot. Numerous techniques and schedulers were developed through simulations. Accurate … Read more

Modeling I/O Performance With Extra-P

In high-performance computing (HPC), large scientific applications are usually executed on huge clusters with a vast number of resources. Twice a year, the Top 500 list presents the top performers in this field. As these systems increasingly become more complex and powerful, so do the applications across various domains (e.g., fluid dynamics, molecular dynamics, and … Read more