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What is HSA? (from the link) Heterogeneous System Architecture (HSA) driver for radeon-family GPUs. HSA allows different processor types (CPUs, DSPs, GPUs, et
by j_s 12y ago
What is HSA? (from the link)
Heterogeneous System Architecture (HSA) driver
for radeon-family GPUs.
HSA allows different processor types (CPUs, DSPs, GPUs, etc..) to share system resources more effectively via HW features including shared pageable memory, userspace-accessible work queues, and platform-level atomics. In
addition to the memory protection mechanisms in GPUVM and IOMMUv2, the Sea Islands family of GPUs also performs HW-level validation of commands passed in through the queues (aka rings).
- dragontamer 12y agoThe exciting part of HSA though is the APU architecture that AMD is putting out. Its hardware specific, but the CPU and embedded GPU have a coherent cache. (CPU and GPU are on the same die with APUs).
- sliverstorm 12y agoAgreed, that's the most thrilling development to HSA in my eyes. Coherent memory structures (with much of it shared) all the way down truly elevates the GPU to first-class citizenship.
- ris 12y agoWhat I don't really see, HSA-wise, is how they plan to cater for the fact that graphics and compute cores favour significantly different types of memory (DDR vs GDDR). From what I understand, one of the major cripplers of on-die graphics so far as been its reliance on the same bog-standard memory interface shared with the CPU. How will this interact with AMD's side-port memory schemes?
- ferrari8608 12y agoDDR4 will help when it comes to market next year. The speeds start at 2133 MT/s.
- dragontamer 12y agoIn addition to what other posters have noted... there are rumors that future AMD APUs are going to support both DDR4 and GDDR5 RAM. http://hardware-beta.slashdot.org/story/14/01/20/0159210/amd-considered-gddr5-for-kaveri-might-release-eight-core-variant http://hardware-beta.slashdot.org/story/14/01/20/0159210/amd... AMD has had sub-par (compared to Intel) memory controllers recently. So maybe the improved memory is for naught. Nonetheless, they're working on it...