Adrian Mircea Nenu computo, ergo sum

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// BCS, The Chartered Institute for IT

Chartered IT Professional (CITP MBCS)

Upholding the highest professional standards and helping shape the future of technology.

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Latest videos

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I gave my game's NPC a language model | Building nanoMMO #25
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MMO zones and portals in C++ with raylib | Building nanoMMO #22
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MMO items in C++ with protobuf text format | Building nanoMMO #26
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Pretraining a GPT on a laptop in 10 minutes | Minimum Viable GPT #2
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Fine-tuning a GPT to follow instructions | Minimum Viable GPT #3
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Where a GPT's time goes, profiled | Minimum Viable GPT #6
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Build a GPT from scratch: 14.6M parameters | Minimum Viable GPT #1
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A KV cache makes a GPT write 4× faster | Minimum Viable GPT #4
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A GPT in the browser, a quarter the size | Minimum Viable GPT #5
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DPO: a GPT learns from preferences | Minimum Viable GPT #7
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PPO: a GPT learns from its own stories | Minimum Viable GPT #8
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A BPE tokenizer in C++, 116× faster | Minimum Viable GPT #11
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RoPE: a GPT that reads past its window | Minimum Viable GPT #10
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LoRA: fine-tune 2% of a GPT's weights | Minimum Viable GPT #9
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Flash attention: 12 GB down to 48 MB | Minimum Viable GPT #13
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Latest writing

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Training a 14M GPT to Generate Children Stories in 20 Minutes: Pretraining, SFT, and Direct Preference Optimization

End to end implementation, parameter and architecture analysis, and light evaluation of the checkpoints

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Could Actor Systems Be All We Need for Agentic AI Workflows

Are We Reinventing the Wheel of Actor Systems as We Develop Agentic Orchestration for AI?

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Is Computer Science a Worthwhile Pursuit Today?

As of 2026, It Will Most Certainly Endure the Test of Time, Albeit With a Raised Bar of Expectations

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