Windows builds are failing

[jaimergp]

@peastman @jchodera

Just writing here that Windows builds are failing. CUDA is not being found (but OpenCL is?). Example log lines:

• OpenCL found
• CUDA not built

[peastman]

I can't tell what the real error is. There are a lot of messages that read

PGO: UNKNOWN is not implemented yet!
PGO: UNKNOWN is not implemented yet!
PGO: UNKNOWN is not implemented yet!

But I suspect that may not be important. It successfully runs testInstallation, but only finds the Reference and CPU platforms. But since I don't think the build machine has a GPU(?), it wouldn't be expected to find any others. getPluginLoadFailures() lists some errors :

Error loading library C:/Miniconda/conda-bld/openmm_1625543563873/_test_env/Library/lib\plugins\OpenMMOpenCL.dll: 126
Error loading library C:/Miniconda/conda-bld/openmm_1625543563873/_test_env/Library/lib\plugins\OpenMMRPMDOpenCL.dll: 126
Error loading library C:/Miniconda/conda-bld/openmm_1625543563873/_test_env/Library/lib\plugins\OpenMMDrudeOpenCL.dll: 126
Error loading library C:/Miniconda/conda-bld/openmm_1625543563873/_test_env/Library/lib\plugins\OpenMMAmoebaOpenCL.dll: 126

Apparently error 126 can have many causes. A common one is that the library needed to link to some other library that couldn't be found. Perhaps OpenCL.dll? And I don't see any mention of it compiling the CUDA platform, but also no error messages about being unable to find CUDA.

[jchodera]

This is still failing every day and I don't believe I have permissions to even view the errors: