> For the complete documentation index, see [llms.txt](https://docs.nuvolos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nuvolos.com/concepts/nuvolos-basic-concepts/credits-hpc-and-gpus.md).

# Credits, HPC, and GPUs

**Credits** are the unit of account for everything beyond the regular Nuvolos subscription. They are used for credit-based Application sizes, GPU computing, large file storage, database computation overage, and professional services. Credits can be purchased at any time provided you have a Nuvolos subscription, and unused Credits roll over as long as the subscription is renewed.

**HPC (High Performance Computing)** in Nuvolos refers to scaling Applications onto dedicated nodes for complex computational workloads. Nuvolos supports interactive HPC use cases through credit-based sizes that allocate exclusive CPU, RAM, and GPU resources to a single running Application. This makes it possible to run workloads that would otherwise require submitting to a batch cluster, while keeping the same notebook-style or IDE-style interactive workflow.

**GPU** computing is supported as part of the credit-based sizes. Because GPUs rely on parallel operations, they outperform regular processors for stream-processing tasks on large amounts of data - common in machine learning, scientific simulation, and image processing.


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