CUDA 13 removes the cudaMallocManaged fallback to system memory for Pascal and earlier. ➜ Your code will still run, but UM will error out. Migrate to cudaMalloc + explicit cudaMemcpy or upgrade hardware.
New way (CUDA 13+):
import cuda
For the average developer, the latest CUDA release cycle offers . For the HPC engineer, it offers the tools necessary to saturate Blackwell's massive bandwidth . It is a mature, robust platform that has successfully transitioned from a graphics API to the operating system of the AI era. cuda release news
cuda_target(myapp) SOURCES main.cu ARCHITECTURES 90a 100 120 ENABLE_CUFFT CUDA 13 removes the cudaMallocManaged fallback to system