Hardware upgrade to cut down reconstruction time

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4 comments

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    chris
    are you running out of ram at the moment?

    running everything off ssds?
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    Justin Jang
    Hi,

    Yes, We are running everything on SSD.
    No, we never had trouble with RAM ..
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    chris
    its probably also worth figuring out what takes longer gpu or cpu.

    I'm also not sure how well rc handles multiple numa nodes. but think it suffers a bit so your probably best to stay single cpu rather than dual xeon. esp if you don't need the extra ram.

    adding anymore video's cards will only add a little bit of extra speed.

    for cpu's you could go a 6900k or 6950k. (im running at 6900k @ 4ghz).

    or you could go for a single xeon like a e5 2687w v4. just keep in mind keep below 16 cores unless you want to disable hyper threading.

    probably by far the cheapest thing would be to get a few machines, at similar spec to what you have.

    I think going for 1 very powerful pc, makes sense if you need lots of ram, or are getting cli version.
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    Castlenock
    Hey a couple of observations which are based partly from experience, partly from research, and a good bit of guessing so don't take this as gospel. Also, this is a bit eclectic, major headache and running out the door...

    - I think you'll be hard pressed to get 1/2 the speed of your current set up: could be wrong, please someone chime in if I am. CR has suggested that node based clusters are being actively worked on, so I'm getting ready for that.
    - I upgraded to 64GB from 32GB of RAM with a similar set-up and was surprised to see that RC happily used it - don't know how well that equated to performance, but it wasn't eating up more than 55% when I use using 32GB either so I was surprised it used it.
    - Wishgranter just posted a good article from Tweaktown (there is another on Tom's Hardware I think) about building some really good multi-CPU systems on the cheap given a quirky dip in the CPU market. Can't find it at the moment but chase that down...
    - From everything I have seen, I think the best bang for the buck right now is a 6900 overclock it a bit if you want, with 64GB+ of ram, 2 GPU cards, some PCIe-like (nvme) memory speeds, and some crazy good coolers if you want to overclock for 10-20% gains (good luck on that though). You'll get faster speeds with more CPUs if you start to switch over to Xeons, but I don't think by much at all to be honest. Read puget system's multi-CPU/GPU analysis on **************** totally different software, but it's efficiencies for multi-GPU and CPUs are crazy good, RC may be the same, but the multi cpu/gpu return ratio seems to putter out pretty quickly, so going for 32 CPUs isn't necessarily the best decision if price is a major factor.
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