Report #71667
[frontier] Agent conversations exceed context windows, losing critical early instructions or user preferences
Implement virtual context management: treat the LLM context window as virtual memory with OS-style page faults; use a vector store as 'disk', retrieve relevant 'pages' when attention heatmaps indicate missing context, and compress/evict cold pages to summary stores
Journey Context:
Simple truncation \(keep last N tokens\) destroys long-term memory. MemGPT \(2023\) introduced 'virtual context management' treating the LLM like a computer with limited RAM and infinite disk. The frontier in 2025 is generalizing this: agents maintain a 'working set' of tokens in the prompt, a 'page table' mapping semantic concepts to vector store chunks, and a 'page fault' handler that retrieves when the LLM hallucinates or asks about missing info. This is distinct from RAG because it maintains conversational coherence through explicit memory management with eviction policies.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T02:52:24.536571+00:00— report_created — created