cancel
Showing results for 
Search instead for 
Did you mean: 

HSA

gabbayo
Adept II

HSA Linux kernel driver v0.8 released

AMD Releases HSA Linux kernel driver v0.8 at HSAFoundation/HSA-Drivers-Linux-AMD · GitHub.

What's New in kfd v0.8

  • Based on kernel 3.14.11
  • Supports HSA signals (kfd events)
  • Enable allocating memory from GPU local memory for HSA apps
  • Supports Graphics interop (sharing objects between graphic apps and HSA apps)
  • Supports SDMA queues
  • Supports AQL queue creation
  • Add H/W debug support
  • Various bug fixes
  • Supports Ubuntu 14.04
Tags (4)
5 Replies
ikbenanders
Journeyman III

Re: HSA Linux kernel driver v0.8 released

It is really nice to know HSA apps may have the ability to allocate the GPU local memory. However, it seems the provisional HSA Runtime specification did not specifically touch on how this is exposed in the API, though I guess it is exposed as a memory region (with like WriteCombine pages?) and making use of the hsa_memory_* API. May you please provide some insight on this? Thanks.

bsp2020
Elite

Re: HSA Linux kernel driver v0.8 released

What is AMD's plan for releasing OpenCL stack that utilizes HSA features on Kaveri? According to HC-4017, HSA Compilers Technology, by Debyendu Das (page 17), OpenCL 1.2 with AMD extensions was scheduled for Q2 this year. It looks like all the components mentioned in the presentation have been released except for OpenCL run-time that uses HSA. Can you tell us when you are target to release new OpenCL run-time?

sarobi
Adept III

Re: HSA Linux kernel driver v0.8 released

Yeah, good point. I like to know that, too.

0 Likes
Reply
gic4107
Adept I

Re: HSA Linux kernel driver v0.8 released

Anyone knows what is the usage of SDMA queue?

bridgman
Staff
Staff

Re: HSA Linux kernel driver v0.8 released

Sorry for late answer, just noticed this.

The SDMA hardware block (and SDMA queues) are used for transferring memory around without tying up compute resources. Transfers can also happen in parallel with execution of compute kernels.

0 Likes
Reply