From d57f6bf0bfb860405b162a9b4228e32bf3c968b4 Mon Sep 17 00:00:00 2001
From: Frederick Roy <froy@lnrobo.com>
Date: Fri, 20 Mar 2026 13:31:50 +0900
Subject: [PATCH] sofacuda: add diagnostic info

---
 .../plugins/SofaCUDA/Core/CMakeLists.txt      |  2 --
 .../SofaCUDA/Core/src/sofa/gpu/cuda/mycuda.cu | 19 +++++++++++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/applications/plugins/SofaCUDA/Core/CMakeLists.txt b/applications/plugins/SofaCUDA/Core/CMakeLists.txt
index bd186d249c3..05e8d3c428c 100644
--- a/applications/plugins/SofaCUDA/Core/CMakeLists.txt
+++ b/applications/plugins/SofaCUDA/Core/CMakeLists.txt
@@ -109,8 +109,6 @@ if (${CUDA_HOST_COMPILER} MATCHES "ccache$")
 endif()
 
 add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES} ${CUDA_SOURCES})
-set_target_properties(${PROJECT_NAME} PROPERTIES CUDA_ARCHITECTURES "${CMAKE_CUDA_ARCHITECTURES}")
-message("CMAKE_CUDA_ARCHITECTURES ${CMAKE_CUDA_ARCHITECTURES}")
 set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "${SOFACUDA_COMPILE_DEFINITIONS}")
 if(SOFACUDA_VERBOSE_PTXAS)
     target_compile_options(${PROJECT_NAME} PUBLIC $<$<COMPILE_LANGUAGE:CUDA>:--ptxas-options=-v>)
diff --git a/applications/plugins/SofaCUDA/Core/src/sofa/gpu/cuda/mycuda.cu b/applications/plugins/SofaCUDA/Core/src/sofa/gpu/cuda/mycuda.cu
index 61934bfcb6d..ce9ce60ea00 100644
--- a/applications/plugins/SofaCUDA/Core/src/sofa/gpu/cuda/mycuda.cu
+++ b/applications/plugins/SofaCUDA/Core/src/sofa/gpu/cuda/mycuda.cu
@@ -80,10 +80,29 @@ int mycudaInit(int device)
 {
     if (cudaInitCalled) return 1;
 
+    // Driver and API checks
 #if defined(__cplusplus)
     mycudaPrintf("C++ standard = %ld", __cplusplus);
 #endif
 
+    // ── Driver & Runtime versions ──────────────────────────────────────────
+    int driverVersion = 0, runtimeVersion = 0;
+    cudaDriverGetVersion(&driverVersion);
+    cudaRuntimeGetVersion(&runtimeVersion);
+
+    mycudaPrintf("=== CUDA Version Diagnostics ===\n");
+    mycudaPrintf("Driver  version : %d.%d\n", driverVersion  / 1000, (driverVersion  % 100) / 10);
+    mycudaPrintf("Runtime version : %d.%d\n", runtimeVersion / 1000, (runtimeVersion % 100) / 10);
+
+    if (driverVersion < runtimeVersion) {
+        mycudaPrintf("[ERROR] Driver is too old for this runtime!\n");
+        mycudaPrintf("        Minimum required driver for runtime %d.%d: see CUDA release notes.\n",
+               runtimeVersion / 1000, (runtimeVersion % 100) / 10);
+        return 0;
+    }
+    mycudaPrintf("[OK] Driver is compatible with runtime.\n\n");
+
+    // Hardware checks
     cudaInitCalled = true;
     const cudaError_t getDeviceCountError = cudaGetDeviceCount(&deviceCount);
     if (getDeviceCountError != cudaSuccess)