Add per-board compute-backend diagrams on board pages.

VisionFive 2 shows Scalar+GPU; K1 boards show all four paths with board-specific labels.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: hugomeiland

assets/images/compute-backends-k1.svg

@@ -2,6 +2,12 @@ The Banana Pi BPI-F3 is built on the SpaceMiT **K1** SoC: eight **SpacemiT X60**
 
 ![](f3.jpg)
 
+## Compute paths on this board
+
+Same **K1** silicon as the [Orange Pi RV2](RV2.html) — scalar, **RVV**, **IME**, and integrated **GPU** (identical compute features; half the RAM).
+
+![Compute backends on the Banana Pi BPI-F3](../assets/images/compute-backends-k1.svg)
+
 Cross-board confirmation from [opensolvers/benchmarks](https://github.com/opensolvers/benchmarks): same `gemv_n` bug, same [easyconfigs#26444](https://github.com/easybuilders/easybuild-easyconfigs/pull/26444) fix, bit-identical residuals where measured.
 
 ## IME (Integer Matrix Extension)

assets/images/compute-backends-visionfive2.svg

@@ -2,6 +2,12 @@ The Orange Pi RV2 is built on the SpaceMiT **K1** SoC: eight **SpacemiT X60** co
 
 ![](rv2.png)
 
+## Compute paths on this board
+
+The K1 SoC exposes all four paths we benchmark: scalar baseline, **RVV** OpenBLAS, **IME** int4 matrix ops (cluster 0), and an integrated **GPU**.
+
+![Compute backends on the Orange Pi RV2](../assets/images/compute-backends-k1.svg)
+
 ## IME (Integer Matrix Extension)
 
 Besides RVV, each X60 core cluster exposes SpaceMiT's **IME** — a dedicated **int8 matrix unit** via the custom instruction `smt.vmadot`. One `vmadot` fuses a **4×4 int32** tile update from two **4×8 int8** operand tiles; this is the hardware behind the part's quoted AI TOPS rating.

boards/F3.md

@@ -2,6 +2,12 @@ The StarFive VisionFive 2 board is built around the StarFive **JH7110** SoC: fou
 
 ![](vf2.jpg)
 
+## Compute paths on this board
+
+The JH7110 has **scalar** CPU cores (U74-tuned OpenBLAS) and an integrated **GPU** — no RVV vector unit or vendor matrix extension.
+
+![Compute backends on the VisionFive 2](../assets/images/compute-backends-visionfive2.svg)
+
 ## HPL via EESSI
 
 See also the [HPL app overview](../apps/hpl.html).