Parallel Processing
What is Parallel Processing?
Parallel processing is the idea of breaking down a big task into smaller parts and having multiple computers or processors work on these parts at the same time. This helps solve complex data science problems faster. Parallel processing is used in scientific simulations, data analysis, machine learning, and real-time processing of large-scale data.
The Basic Idea
What if we could tend to a bunch of duties at once without losing steam? With computers, we can split up a big job into smaller chunks. Different processors handle them at the same time—this process is known as parallel processing. This way, instead of waiting for one computer to do everything step by step, multiple tasks are done at once. It’s like having a group of people all working on various parts of a project, instead of a one-man band.
One key idea here is scalability, which is how well a system can handle more work by adding more processors or computers. The more processors you throw at a problem, the faster it gets solved. Another important aspect of parallel processing is load balancing, which ensures that each processor is working at a similar level of effort. This helps processors avoid sitting idle while others are overloaded.
Work must be distributed evenly across all available processors to achieve optimal performance. If one processor has to handle a disproportionately large chunk of the work, it could become a bottleneck, slowing down the entire process.
In large-scale systems or supercomputers, where millions of processors might be working together, proper load balancing allows these systems to scale effectively. This way, the machines can handle extremely complex tasks such as climate modeling, AI training, or 3D graphics rendering.
Redesigning your application to run multithreaded on a multicore machine is a little like learning to swim by jumping into the deep end.
— Herb Sutter, Chair, ISO C++ standards committee, Microsoft
About the Author
Lily Yuan
Lily Yuan is a three-time author in the industrial-organizational (IO) psychology space and is always thinking about how people and ideas are connected. She works with the Strong Interest Inventory, Extended DISC, Ikigai, and positive psychology to help students and professionals excel on their career journeys. Lily enjoys improv, elevator music, HIIT workouts, and board games.