EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Sep 2·5 min read
CTTI is Exponential, RTTI is Linear
TL;DR
Runtime Type Information (RTTI) offers a linear cost model for type handling, while Compile-Time Type Information (CTTI) incurs exponential costs, especially in larger systems. Choosing RTTI can simplify development and reduce compile-time overhead.
✦ Why It Matters
Consider using RTTI in your projects to avoid exponential compile-time costs associated with CTTI.
Key Takeaways
- RTTI scales linearly with the number of types.
- CTTI can lead to exponential growth in compile-time costs.
- Choose RTTI for data-driven applications to simplify type handling.
- Be cautious of CTTI's hidden costs in larger systems.
How It Works
RTTI uses a single table to store type information, allowing for constant-time lookups and minimal code duplication. This contrasts with CTTI, which generates separate code for each type, leading to increased complexity and longer compile times.