# Shared Memory CPU/GPU programming in Julia (M4 / ROCm)

**URL:** <https://discourse.julialang.org/t/shared-memory-cpu-gpu-programming-in-julia-m4-rocm/123477>\
**Category:** GPU\
**Tags:** question\
**Created:** [December 5, 2024, 1:36am UTC](https://discourse.julialang.org/t/shared-memory-cpu-gpu-programming-in-julia-m4-rocm/123477 "2024-12-05T01:36:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Perrin\_Meyer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/perrin_meyer/32/15686_2.png) [@Perrin\_Meyer](https://discourse.julialang.org/u/Perrin_Meyer)\
**Post date:** [December 5, 2024, 1:36am UTC](https://discourse.julialang.org/t/shared-memory-cpu-gpu-programming-in-julia-m4-rocm/123477/1 "2024-12-05T01:36:44Z")

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I’ve noticed that my new M4 (which just arrived) uses a shared CPU / GPU memory (similar to the old Silicon Graphics boxes 25 years ago…). Also AMD seems to have something called ROCm

Is there a Julia way to experiment (openmp offload?) with these new/old GPU architectures?

I did quick browse of AMDGPU.jl, but it seems rather low level and does not mention shared memory. I did not find an equivalent apple package, but maybe I just dont know the right marketing speak…

Thanks for any pointers or papers

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**Author:** ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)\
**Post date:** [December 5, 2024, 5:52am UTC](https://discourse.julialang.org/t/shared-memory-cpu-gpu-programming-in-julia-m4-rocm/123477/2 "2024-12-05T05:52:51Z")

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Is it not Metal.jl. ?