
GPUs, explained without the datasheet
Why does AI need this particular chip?
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A good AI deployment usually comes down to a few decisions you want to make early: which GPU fits the job, where your data should live, how to keep storage persistent, and which region makes sense for the workload. We pulled together the mistakes we see most often and the fixes that can save teams time, budget, and a few rebuilds.

The hard part of running a model in the cloud is rarely the model. You already know your architecture, your framework, and your weights. What slows you down is the configuration choices that surround the model once you rent GPUs, and any one of them can cost you money, time, or a training run.
The failures are predictable. You pay for VRAM you never touch, or you wait on container rebuilds you could have skipped. Data lands in the wrong place and the training run dies with it. You serve requests from the wrong region and then wonder why production latency looks bad. None of these is a model problem. They are all setup problems, and setup is the part people underestimate.
Here are five places engineers most often trip when they get started, with why each one happens and the configuration that avoids it.
Do not treat deployment as the final step. If you build everything locally and assume the move to the cloud is a formality, you find out at the worst moment that the container will not build or the code will not run once it is remote. Now you are debugging your application, your container, and your cloud environment at once.
There are two supported paths to get your code onto Runpod: a Docker image or the GitHub integration. Both work. The part people underestimate is containerizing cleanly, so do not save it for last.
Two things make containerizing easier than it looks. First, you rarely start from scratch. Runpod maintains prebuilt templates for common stacks, including PyTorch, vLLM, ComfyUI, and Whisper, and starting from one is usually faster than writing a Dockerfile from zero. When you do need your own image, build it, push it to a container registry, and point your pod or endpoint at it. Second, if your code lives on GitHub, the integration builds and deploys a Serverless endpoint on every push, so you can skip the manual image steps. Either way, get the container running on your own machine first, because a container that runs locally almost always runs on Runpod.
Flash is the third option, and for many workloads it changes the iteration loop. You install the runpod-flash package, authenticate once with flash login, and decorate the functions you want on a GPU with @Endpoint. There is no image to build and no registry to push. You run your script the ordinary way, with python your_script.py. Everything outside the decorated function runs locally, and only the decorated function runs on Runpod. The first call provisions a Runpod Serverless endpoint, installs your dependencies, and starts a worker, which takes 30 to 60 seconds. After that, calls return in about 2 to 3 seconds because the worker is already warm, and when you change your code Flash injects the update into the running worker, so it takes effect without reprovisioning. When you are done, flash undeploy removes the endpoints, and the same decorated code is what you promote to a production API when you build a Flash app.
The contrast holds even if you never use Flash. The usual cloud loop is build, push, pull, run, and it costs 15 minutes or more every time you change a line. Running everything except the GPU calls on your own machine collapses that to a couple of seconds once the worker is warm, after the one-time 30-to-60-second spin-up on the first call. The time you save goes back into the code.
Best practice: pre-build your Docker image and store it in a registry before deployment, or wire up the GitHub integration for Serverless. Running the same Docker runtime locally and in the cloud removes the "works on my machine" gap before it costs you anything.
For the full walkthrough, see the Runpod docs on getting started with Flash.
This is where people struggle most, usually by picking a GPU on name recognition instead of on the workload. Start with VRAM. You either run out of it halfway through a job, or you rent a card far larger than the work needs and pay the difference every hour. VRAM is almost always the binding constraint, so size the card to the model first. For large language models, a useful rule of thumb is roughly 2 GB of VRAM per billion parameters at 16-bit precision. Estimate that before you deploy. Here's what that looks like in practice:
Take a look at that 13B parameter model. The same model can yield two very different hourly rates determined by how you configure it. Quantization changes the hardware requirement, and the hardware requirement changes the bill.
Make the decision in the right order:
Two cards with similar peak numbers can behave very differently on your actual model, and a quick head-to-head on our GPU comparison page will tell you more than an afternoon of reading.
Right-sizing is also where the real money is. Teams that match the card to the workload instead of defaulting to the largest card routinely cut their compute spend by more than half. Moving up means deploying a new pod or endpoint on a different GPU, so the choice is never locked in, and there is no reason to overbuy on day one.
Training and inference pull in different directions. Training rewards throughput and large VRAM. Inference is latency-sensitive and often runs better and cheaper on a smaller card. You are allowed to use different GPU types for different phases of the same project, and you usually should.
One practical habit will save you a bad afternoon: keep a comparable fallback card in mind before you deploy. Cards of similar memory and class are generally interchangeable for a given model, so if your first choice is not available, you can pick an equivalent one and keep moving instead of waiting.
Best practice: right-size deliberately. Start with the minimum viable card and scale up, since development and testing need less than production. Aim to use roughly 70 to 80 percent of GPU memory, and choose a card with slightly more VRAM than you need rather than over-provisioning "to be safe."
For more on matching hardware to your workload, see the Runpod docs on choosing a Pod.
Storage is the pitfall that costs you data rather than money, which is what makes it worth the most care. The mistake is common: you leave important data on temporary storage, and it disappears when the pod stops or terminates.
Runpod gives you three storage types, and the job is matching each to the data it holds. Container disk is temporary and fast, local to the machine, and cleared the moment the pod stops. It is the right home for caches and scratch files you can regenerate. Volume disk persists for the pod's lease and survives a stop and restart, but it is deleted when you terminate the pod. A network volume is permanent, lives independently of any single pod, can attach across multiple pods, and survives pod deletion. That last one is where your model weights, datasets, and anything else you cannot afford to lose belong.
Choose by answering three questions. How ephemeral is the data? Does it matter if you lose it? Do you need to keep all of it? Container disk is the fast choice for throwaway data. A network volume is for anything you reload, reuse, or would rather not recreate.
The trap catches people constantly. Data written only to container storage is lost if the pod is interrupted, restarted, stopped, or terminated. Store anything important on a network volume or an external backup, and do it before the run rather than after.
One constraint shapes the rest. A network volume must be attached when you deploy the pod, and it lives in a specific data center, so your storage decision and your region decision are the same decision. Make them together.
On Flash, the same split applies. Flash workers get a temporary container disk, so anything not written to the persistent volume path is erased when the worker stops, and they can mount a network volume tied to a data center. Configure that volume with explicit size and datacenter values rather than leaning on the defaults, which are a convenience rather than a plan.
Best practice: network volumes are NVMe-backed, come in standard and high-performance tiers, and attach at deploy time. If your data needs to outlive a single session, put it on one from the start instead of migrating it later.
For the full breakdown of each option, see the Runpod docs on storage types.
This one is easy to miss. You skip file cleanup, so temporary files, intermediate artifacts, and stale training data accumulate until they become a problem. Clean up as part of the job rather than something you get to later.
Process, then clean, on every run. Treat intermediate files as temporary by default so they do not survive past their usefulness. This matters for three concrete reasons. Physical media fills up, and you pay for storage you are not using. Large sets of training images and artifacts slow lookups and I/O, so your own queries drag. Retained personal or customer data becomes a privacy and compliance risk the moment it outlives the purpose you collected it for.
Cleanup discipline is also what keeps a network volume from growing into both a bill and a liability. A stopped pod keeps billing for its attached volume storage even while nothing is running, so stale data you forgot about is money leaving the account for no return. A persistent volume does not mean you should keep everything forever.
Best practice: check your usage withdu -sh. before you run low, and find the biggest offenders with a one-liner likefind /workspace -type f -exec du -h {} + | sort -rh | head -n 10.The default container overlay is around 20 GB, so if you routinely push past it, move to a network volume rather than fighting the ceiling every session.
For more, see the Runpod docs on handling a full disk.
The last pitfall is location. You deploy wherever the default lands, and you pay for it in latency to your users, or you run regulated data somewhere that does not meet your obligations.
Get your compute as close to your users as you can. Runpod runs across 30+ global regions with strong bandwidth, so proximity is usually available, and the mistake is failing to use it. If response time does not matter for your workload, you can host anywhere and optimize for cost or availability instead.
Plan region and storage together, for the reason from the storage section. A network volume is tied to a data center, so for anything latency-sensitive, the location of your compute and the location of your data need to line up.
For regulated workloads, location is a hard requirement. Run these on Secure Cloud, which uses T3/T4 data centers with single-tenant hardware and is the right home for production and regulated data. Community Cloud draws on vetted third-party capacity and suits training and experimentation, but it is not the place for sensitive data or customer-facing production. Choose a data center in a region that matches your regulatory obligations, and start from a template in Runpod's template library that already fits your stack rather than assembling one under time pressure. Runpod met HIPAA and GDPR standards as of February 2026, and you can filter for compliant infrastructure while you deploy. Data is encrypted in transit and at rest by default.
Compliance certifications apply at the platform level, and individual data center certifications can vary, so verify the specific region you are deploying a regulated workload into. Qualifying customers can also put custom legal agreements in place, such as a BAA for HIPAA-covered work or a DPA for GDPR.
Best practice: use the Security and compliance filter when you deploy. On a pod, it lives under Additional filters. On Serverless, it is under the endpoint's Advanced configuration. Filter first, then choose your card, so you do not commit to a GPU in a region you cannot use.
For details on regions and certifications, see the Runpod docs on security and compliance.
Configuration is where cloud GPU work is won or lost. Almost every choice here is reversible: you can resize a card, switch a region, or add storage as you grow. The one exception is the data you forget to persist, which does not come back. Set your defaults with that asymmetry in mind. Get the code, the card, the storage, the cleanup, and the region right at the start, and the rest of your time goes to the model.
This guide covers configuration. Hardening for production, checkpointing long runs, handling worker restarts, and designing for capacity that flexes under load are their own discipline, and they are worth a deliberate pass once these five are solid.
If you get stuck on any of it, the docs cover each of these in depth, and we are available to help you containerize and deploy.
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