From 2a4bc347def9711d272652594f63b36ac73bc35c Mon Sep 17 00:00:00 2001
From: Emanuel Gull <emanuel.gull@gmail.com>
Date: Tue, 23 Jun 2026 11:06:27 +0200
Subject: [PATCH] fix: replace removed cudaDeviceProp::memoryClockRate for CUDA
 13 compatibility

cudaDeviceProp::memoryClockRate was removed in CUDA 13. Use the driver
API cuDeviceGetAttribute with CU_DEVICE_ATTRIBUTE_MEMORY_CLOCK_RATE
instead, which returns the same value in kHz and is available across all
CUDA versions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/cuda_check.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/cuda_check.cpp b/src/cuda_check.cpp
index 7435e5f..8f79d8a 100644
--- a/src/cuda_check.cpp
+++ b/src/cuda_check.cpp
@@ -36,7 +36,9 @@ void check_for_cuda(MPI_Comm global_comm, int global_rank, int &devCount_per_nod
       cudaGetDeviceProperties(&prop, i);
       std::cout<<"Device Number: " << i << std::endl;
       std::cout<<"  Device name: " << prop.name << std::endl;
-      std::cout<<"  Peak Memory Bandwidth (GB/s): "<<2.0*prop.memoryClockRate*(prop.memoryBusWidth/8)/1.0e6<<std::endl;
+      int memClockKHz = 0;
+      cuDeviceGetAttribute(&memClockKHz, CU_DEVICE_ATTRIBUTE_MEMORY_CLOCK_RATE, i);
+      std::cout<<"  Peak Memory Bandwidth (GB/s): "<<2.0*memClockKHz*(prop.memoryBusWidth/8)/1.0e6<<std::endl;
       std::cout<<"  Compute Capability: "<<prop.major<<"."<<prop.minor<<std::endl;
       std::cout<<"  total global mem: "<<prop.totalGlobalMem/(1024.*1024*1024)<<" GB"<<std::endl;
     }