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github-data/pull_requests/195 - Deepseek MLA Optimizations V2.md

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+### 🔀 [#195](https://github.com/ikawrakow/ik_llama.cpp/pull/195) -  Deepseek MLA Optimizations V2
+
+| **Author** | `saood06` |
+| :--- | :--- |
+| **State** | ❌ **Closed** |
+| **Created** | 2025-02-08 |
+| **Updated** | 2025-02-09 |
+
+---
+
+#### Description
+
+@ikawrakow 
+
+This PR contains the following things
+- A fairydreaming commit that is supposed to increase PP
+- Avoid allocating the MHA KV cache in MLA mode
+- Adds a change I originally missed that is used for gguf-py.
+
+I will follow up with:
+- Having all the MoE experts load during warmup, that can be placed in this PR if you want, or a separate one. It is a very large QoL feature for large MoE. Without it the model is slowly loaded in on use, with it, the model is loaded immediately and at a faster rate.
+- The mmap based KV cache buffer, it is functional but I have yet to make it a CLI option.
+
+---
+
+#### 💬 Conversation
+
+👤 **ikawrakow** submitted a review the **2025-02-09** at **07:36:43**: ✅ `APPROVED`<br>
+
+Looks good. I added a minor change to check if `wk_b` and `wv_b` are available before turning on MLA (so we don't crash if someone is using an old model and asked for MLA).
+
+PP-4096 for `Q8_0_R8` quantized DeepSeek-Lite with `-mla` goes up to 292 t/s from 275 t/s with this change.