From f7cf9fd5fba9ab98584dd06d59012008f0940f6c Mon Sep 17 00:00:00 2001
From: tomsmierz <smierzchalski.tomek@gmail.com>
Date: Tue, 19 Mar 2024 18:20:01 +0100
Subject: [PATCH] mwe for CUDA problems

---
 benchmarks/MWE.jl | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 benchmarks/MWE.jl

diff --git a/benchmarks/MWE.jl b/benchmarks/MWE.jl
new file mode 100644
index 00000000..deed8e49
--- /dev/null
+++ b/benchmarks/MWE.jl
@@ -0,0 +1,22 @@
+using CUDA
+using SparseArrays
+
+a = CUDA.rand(1, 1)
+b = cu(sprand(Float64, 1, 1, 1.))
+
+# works
+b * a
+a * b
+
+# explodes for CUDA driver v12 but works for CUDA driver v11.4, tested on julia 1.9 and 1.10
+c = CUSPARSE.CuSparseMatrixCSC{Float64, Int32}(b.colPtr, b.rowVal, b.nzVal, (1, 1))
+d = CUDA.rand(Float64, 1, 1)
+
+d * c
+c * d
+
+e = CUSPARSE.CuSparseMatrixCSR(c)
+e * d
+
+# also explodes for CUDA driver v11.4, on both versions of julia
+d * e
\ No newline at end of file