[my123]

Habana has their own SynapseAI layer that their TF/PyTorch port runs on. Custom ops are supported too, via a compiler targeting the TPCs, using a C language variant.

Oh, and they have an open-source UM software stack for those but it's really not usable. Doesn't allow access to the systolic arrays (MME), only using the TPCs is just _starting_ to enumerate what it doesn't have. (but, it made the Linux kernel maintainers happy so...):

https://github.com/HabanaAI/SynapseAI_Core#limitations (not to be confused with the closed-source SynapseAI)

[aseipp]

Well, that's good to hear at least! I knew there was some back and forth between the kernel maintainers recently due to all these accelerator drivers going in without any usermode support; Habana's case was kind of interesting because they got accepted into accel/ early by Greg, but they wouldn't have passed the merge criteria used later on for most others like Qualcomm.

Frankly I kind of expected the whole result of that kerfuffle to just be that Habana would let the driver get deleted from upstream and go on their merry way shipping drivers to customers, but I'm happy to be proven wrong!