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Worth noting that Intel already has a many weaker core design -- the Xeon Phi. While it exists as an add-in "co-processor" right now, in 2015 it will become a s
by personZ 12y ago
Worth noting that Intel already has a many weaker core design -- the Xeon Phi. While it exists as an add-in "co-processor" right now, in 2015 it will become a stand-alone platform via Knights Landing.
- bitL 12y agoXeon Phi seems to be targeting two markets at once - many-core (x64) server computing and GPGPU with their 512-bit SIMD. For general server the memory limitation to 8GB is too low, which is however very competitive in GPGPU market.
- personZ 12y agoTheir new models are 16GB, but you are exactly right that the model is very similar to the GPGPU (less memory, but what it does have is incredibly fast), albeit fewer but higher performance cores than something like a Tesla. Knights Landing is when the model becomes a server unto itself, with 384GB of addressable memory, albeit still maintaining the ultra-fast 16GB of local memory per CPU.
- bitL 12y agoExciting times ahead ;-) Also, there is a difference in required memory architecture when it comes to optimizing CPU thread performance vs SIMD - CPU is more sensitive to latency, SIMD to bandwidth. You usually have to pick the memory type (e.g. DDR3 vs GDDR5) that optimizes one of those and that would tell you what market you target. I am not sure how AMD handles their HSA - they seem to have discontinued plans for GDDR5 so their Fusion GPU is going to be bandwidth-starved.