# NousResearch/hermes-agent · Holographic memory dimension mismatch bugs and fixes

## Open now

- 1 issue, 1 PR open on GitHub.
- #68682: \[Bug\]: Holographic memory crashes on dimension mismatch — hrr_dim not persisted, retrieval has zero error isolation
- PR #68908: fix(memory): survive cross-session hrr_dim drift in holographic memory

These members concern crashes and errors in holographic memory when hrr_dim dimensions do not match, including a missing persistence issue and guards added to the similarity function. All three address the same underlying dimension mismatch vulnerability.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 0 merged PR(s), 1 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Open related issues

- #68682: \[Bug\]: Holographic memory crashes on dimension mismatch — hrr_dim not persisted, retrieval has zero error isolation

## Prior & competing PRs

- **#68870: fix(holographic): guard similarity() against dimension mismatch (#68682)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `5c37e054d3486`, `#68682`
- **#68908: fix(memory): survive cross-session hrr_dim drift in holographic memory**. open
  - maintainer direction: category `partial_fix`; implication `needs_llm`
  - files: `plugins/memory/holographic/__init__.py`, `plugins/memory/holographic/holographic.py`, `plugins/memory/holographic/retrieval.py`, `plugins/memory/holographic/store.py`, `tests/plugins/memory/test_holographic_hrr.py`, `tests/plugins/memory/test_holographic_retrieval.py`, `tests/plugins/memory/test_holographic_store.py`

## Fix status

- No merged fix on record.
- Subsystem: `agent`