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Reasons Unbeknownst
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"45
Reasons Unbeknownst
1
1
15
May 10, 2009
1c
3c
Software RAID with a GPU (CUDA)
d
Filed under:
7e
Random Thoughts —
120
Tags: hard drive , raid , SSD , technology —
4
Kirk
3
@
1
26
daa
[Edit: I just got a bunch of traffic from Nvidia and Sandia labs so I'm thinking I may be on to something here]
So I was sitting here thinking about how modern RAID cards are completely inadequate when it comes to solid state hard drives (as I often do), and I had an idea. Why can’t graphics card hardware be used to accelerate software RAID? We have CUDA right?
For a second I thought I was onto something truly original but after a quick search it looks like some guys over at Sandia Labs beat me to the punch by a few months:
“One example is the RAID software developed by researchers at the University of Alabama and Sandia National Laboratory that transforms CUDA-enabled GPUs into high-performance RAID accelerators that calculate Reed-Solomon codes in real time for high-throughput disk subsystems (according to “Accelerating Reed-Solomon Coding in RAID Systems with GPUs” by Matthew Curry, Lee Ward, Tony Skjellum and Ron Brightwell, IPDPS 2008). From their abstract, “Performance results show that the GPU can outperform a modern CPU on this problem by an order of magnitude and also confirm that a GPU can be used to support a system with at least three parity disks with no performance penalty.” I’ll bet the new NVIDIA hardware will perform even better. My guess is we will see a CUDA-enhanced Linux md (multiple device or software RAID) driver in the near future.”
The problem for using this sort of tech in the consumer space is that people want to boot from their ridiculously fast RAID arrays and software RAID makes that difficult (though not impossible with Linux if you don’t RAID the kernel). If you’re using a software RAID array and the OS crashe"
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