doe300

Isn't this also related to https://github.com/raspberrypi/linux/issues/4321? Can you check how long it actually took to time out (from the start of that particular Mailbox call to the timeout error)?

@ThijsWithaar, do you use clinfo from the repository or a manually compiled version? The version in the repository has an error, because of which I started using the [github version](https://github.com/Oblomov/clinfo)....

On my Raspberry Pi, the `clinfo` from the repository fails (before any output) with > terminate called after throwing an instance of `unsigned int` The manually compiled version runs fine,...

The `VC4CL_NO_VCSM` environment variable skips the usage of the libvcsm.so, would that work for you?

This means that there is some OpenCL C code that VC4C does not handle correctly:) Do you have access to the source code of the OpenCL kernel? I.e. you can...

No, not really, at this point there is no association anymore between the intermediate code and the original source code positions. Judging by the error message, the variable accessed is...

First of all, thanks for the investigation:) > I fixed the Not normalized instruction by just commenting the printf Yes, `printf` is not supported yet (and it won't be for...

> I don't see that much of clang running, but I did spot some process llvm-spirv /tmp/vc4c-EgnXeW /dev/stdin being ran. The file /tmp/vc4c-EgnXeW seems to be non-zero size. But no...

> I don't seem to be able to get any new file `/tmp/vc4c-xxx`. This could be, because the compilation results are cached. At least that is what your first post...

> Just to make it clear, cl_cache in my first post refers to Intel's Neo OpenCL driver's caching feature Ah okay, I misunderstood that. If this is all the VC4CL...