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theaiengineer.substack.comLatest Issues
What is CUDA?
CUDA is NVIDIA’s platform for programming its GPUs: a compiler, a driver, a runtime and two decades of libraries that turn ordinary-looking C++ into work for thousands of cores at once. Every major ML framework stands on it, and a version m...
REINFORCE vs PPO vs DPO vs GRPO
REINFORCE, PPO, DPO and GRPO are the four ways to train a language model after supervised fine-tuning. They differ in how many models sit in GPU memory: two, four, two and three. PPO adds a critic. DPO removes the reinforcement learning loo...
What is a Forward Deployed Engineer?
A forward deployed engineer writes production code inside the customer’s environment and answers for whether the customer’s workflow actually changed. Not a consultant, who advises and leaves. Not a solutions architect, who designs and hand...
Inngest vs Temporal vs DBOS vs LangGraph
Durable execution saves the result of every step your agent finishes, so a crash costs you the one step that was running and not the hour of API calls behind it. LangGraph checkpoints graph nodes. DBOS, a library that keeps the workflow log...
What Makes Inference Nondeterministic?
Send the same prompt to the same endpoint twice, with temperature at zero, and you can get two different answers. The model did not change its mind. Adding the same numbers in a different order gives a different total, and how many other pe...
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Shipping Production AI: Agents, Inference, GPU. Read by 1M+ AI engineers.
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