Since I did not see any Microsoft/other 'official' folks pick up the ball, let me step up. I have been lurking in this list for quite a while and I am a generic scientific programmer (i.e. I use many frameworks such as OpenCL/OpenMP etc, not just MPI)
Although I am primarily a Linux user, I do own multiple versions of Visual Studio licenses and have a small cluster that dual boots to Windows/Linux (and more nodes can be added on demand). I cannot do any large scale testing on this, but I can build and run regression tests etc.
If the community needs the Windows support to continue, I can take up that responsibility, until a more capable person/group is found at least.
I completely missed the message about Shiqing departing as the OpenMPI Windows maintainer. I'll try and keep Windows builds going for 1.6 at least, I have 2011 and 2013 Intel licenses and VS2008 and 2012, but not 2010. I see that the 1.6.3 code base already doesn't build on Windows in VS2012 :-(.
While I can try and keep builds going, I don't have access to a Windows cluster right now, and I'm flat out on two other projects. I can test on my workstation, but that will only go so far. Longer-term, there needs to be a decision made on whether Windows gets to be a first-class citizen in OpenMPI or not. Jeff's already told me that 1.7 is lagging behind on Windows. It would be a shame to have all the work Shiqing put in gradually decay because it can't be supported enough. If there's any Microsoft/HPC/Azure folks observing this list, or any other vendors who run on Windows with OpenMPI, maybe we can see what can be done if you're interested.
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