docs: Standardize Fedora OS version references and update IOMMU kernel parameter from amd_iommu=off to iommu=pt in documentation.

README.md

@@ -176,17 +176,17 @@ This should work on any Strix Halo. For a complete list of available hardware, s
 | **CPU**           | Ryzen AI MAX+ 395 "Strix Halo"                              |
 | **System Memory** | 128 GB RAM                                                  |
 | **GPU Memory**    | 512 MB allocated in BIOS                                    |
-| **Host OS**       | Fedora 43 (Rawhide), Linux 6.18.5-200.fc43.x86_64            |
+| **Host OS**       | Fedora 43, Linux 6.18.5-200.fc43.x86_64            |
 
 ### 6.2 Kernel Parameters (tested on Fedora 42)
 
 Add these boot parameters to enable unified memory while reserving a minimum of 4 GiB for the OS (max 124 GiB for iGPU):
 
-amd_iommu=pt amdgpu.gttsize=126976 ttm.pages_limit=32505856
+iommu=pt amdgpu.gttsize=126976 ttm.pages_limit=32505856
 
 | Parameter                   | Purpose                                                                                    |
 |-----------------------------|--------------------------------------------------------------------------------------------|
-| `amd_iommu=off`              | Disables AMD IOMMU to reduce overhead for better performance               |
+| `iommu=pt`              | Sets IOMMU to "Pass-Through" mode. This helps performance, reducing overhead for both the RDMA NIC and the iGPU unified memory access.               |
 | `amdgpu.gttsize=126976`     | Caps GPU unified memory to 124 GiB; 126976 MiB ÷ 1024 = 124 GiB                            |
 | `ttm.pages_limit=32505856`  | Caps pinned memory to 124 GiB; 32505856 × 4 KiB = 126976 MiB = 124 GiB                     |
 

docs/index.html

@@ -506,7 +506,7 @@
                 </div>
                 <div class="sys-item">
                     <span class="sys-label">OS/Kernel</span>
-                    <span>Fedora 43 (Rawhide) · Linux 6.18.5-200.fc43.x86_64</span>
+                    <span>Fedora 43 · Linux 6.18.5-200.fc43.x86_64</span>
                 </div>
                 <div class="sys-item">
                     <span class="sys-label">Interconnect</span>

rdma_cluster/setup_guide.md

@@ -73,8 +73,8 @@ Perform these steps on the **Host OS** (Fedora 43) of **both nodes**.
 
 | Node | Kernel | OS | IP (RDMA Interface) |
 | :--- | :--- | :--- | :--- |
-| **Node 1** | `6.18.5-200.fc43.x86_64` | Fedora Linux 43 (Rawhide) | `192.168.100.1/30` |
-| **Node 2** | `6.18.6-200.fc43.x86_64` | Fedora Linux 43 (Rawhide) | `192.168.100.2/30` |
+| **Node 1** | `6.18.5-200.fc43.x86_64` | Fedora Linux 43 | `192.168.100.1/30` |
+| **Node 2** | `6.18.6-200.fc43.x86_64` | Fedora Linux 43 | `192.168.100.2/30` |
 
 > **Note:** These specific kernel versions were verified to work. Fedora 43 is recommended.
 

rdma_cluster/troubleshooting_rccl.md

@@ -43,7 +43,7 @@ I have established a stable low-latency RDMA link and a functional Ray cluster o
 *   **Interconnect:** Direct connection via Intel Ethernet Controller E810-CQDA1.
 *   **Protocol:** RoCE v2 (RDMA over Converged Ethernet).
 
-### Host Software (Fedora Rawhide)
+### Host Software (Fedora)
 | Node | Hostname | Kernel | OS | IP (RDMA Interface) |
 | :--- | :--- | :--- | :--- | :--- |
 | **Node 1** | `frmwk-dsk` | `6.18.5-200.fc43.x86_64` | Fedora Linux 43 | `192.168.100.1/30` |