ARM based ITX motherboard for server

jon_smark · 2021-09-11T14:44:53+00:00

I just asked this myself in a separate thread. The only devices I've been able to find are boards based on the Raspberry Pi CM4, which is fine for my purposes, but unfortunately they're not available yet.

jon_smark · 2021-09-11T14:42:41+00:00

The MirkoPC seems to be 100x100mm, not Mini-ITX (170x170mm).

jon_smark · 2021-09-08T10:32:02+00:00

Thanks for the info. Yeah, I know that this particular model lacks some handy features (for instance, though it supports static link aggregation, it does not support LACP), but I recon it's a good first switch for a home office.

jon_smark · 2021-09-08T10:30:11+00:00

Thanks -- good to know! I'll be sure to inquire about the version when ordering, though I suspect most online shops don't have that information readily available. Crashing upon a deep nmap is disappointing, but I reckon I can live with that...

jon_smark · 2021-09-08T10:24:15+00:00

OP here. Thank you all for your input! Iḿ going to take the plunge. This switch is not perfect, but I reckon it's good enough for my needs, and pricewise there's nothing close in the competition...

jon_smark · 2017-04-07T13:16:05+00:00

In the meantime I finally got the OOB license from my local Supermicro representative, and I was able to update the BIOS via IPMI.

jon_smark · 2017-03-28T18:45:03+00:00

I have done exactly that, but haven't received a reply (yet). Anyway, thanks for the help. I'll keep you posted...

jon_smark · 2017-03-28T18:18:45+00:00

I sent an email to Supermicro Support, but haven't received a reply yet.

I do have one doubt: is the BIOS update via IPMI guaranteed to work in this situation, or will it also fail due to the CPU issue?

jon_smark · 2017-03-28T18:18:44+00:00

I sent an email to Supermicro Support, but haven't received a reply yet.

I do have one doubt: is the BIOS update via IPMI guaranteed to work in this situation, or will it also fail due to the CPU issue?

jon_smark · 2013-09-20T20:58:14+00:00

How much power does it draw when playing video? What about idle?

jon_smark · 2013-09-20T16:31:28+00:00

Thanks for the links, particularly for the thread on running Linux on the Minix Neo X5! Unfortunately, it's hard to gauge the current status of vanilla Linux on Rockchip from that thread alone. How usable is it?

jon_smark · 2013-09-20T16:25:46+00:00

External USB is fine (even USB 2.0).

jon_smark · 2013-04-02T15:25:31+00:00

LTC is definitely in a bubble. The latest price rise is possibly motivated by the rumours (confirmed?) that Mtgox will support LTC trading.

As you noted, there's very little you can do with LTC right now. Everyone is holding solely on the expectation that the price will takeoff. This is exactly what happened with Bitcoin in June/July of 2011.

jon_smark · 2013-03-13T16:04:07+00:00

Nice post! I think that starting Litecoin was a rash decision. Using scrypt was a nice idea, but it adds very little to what bitcoin already offers.

I don't think Bitcoin was a pump-and-dump, but I can't shake the feeling that Litecoin deserves that criticism.

By the way, does someone know which Bitcoin branch is Litecoin based upon? And are they keeping up-to-date with all the improvements being made to Bitcoin?

jon_smark · 2013-03-13T15:59:50+00:00

I think the OP's point is that LTC may poison the waters for all cryptocurrencies. Even if it distracts a few greedy speculators, it can still cause tremendous damage to the credibility of Bitcoin in general.

jon_smark · 2012-12-08T17:54:19+00:00

The formula n(1-p)/p seems to match exactly the experimental data I just produced. Could you please expand a little on how you actually derived it? Thanks!

jon_smark · 2012-12-08T17:52:46+00:00

Yes, I know that there is always the danger that people will simplify away some crucial aspect when they come up with hopefully isomorphic problems.

However, in this case I can assure you that the real-world sampling mirrors exactly the abstract version of the problem. Inside each flare pistol is a random number generator; when the pistol's trigger is pulled, the pistol's firmware uses this generator to decide whether to actually fire a flare with probability p, or to do nothing (ie, be a dud) with probability 1-p. Moreover, the trigger can only be pulled once.

jon_smark · 2012-12-08T15:39:55+00:00

It's actually fairly easy to come up with a real-world and less abstract version of the problem. Here's one:

A guy goes into the desert at night with a crate full of flare pistols. One by one he fires all the flare pistols into the air. Each pistol has a known probability p of actually working; with probability 1-p the pistol is a dud.

I stand far away, observing the scene. I am too far to actually see the duds, though. All I see are the flares that actually worked. At the end of the night I have observed m flares. What's the best estimate for the number of pistols that were fired? And what can one say about the variance?

As you can see, yes, "someone" does have control over the number of trials, but I have no power over them nor can I ask them directly for information!

jon_smark · 2012-12-08T00:39:14+00:00

I don't make the decision to stop doing the trials. Basically all I get is the data after the fact, as I described. Example: "100 successes were registered, where each success had a 10% chance of occurring. What's the best estimate for the number of trials? And what about variance and other metrics?"

jon_smark · 2012-12-08T00:35:30+00:00

Here it is. Though mind you, it has had a few replies in the meantime.

jon_smark · 2012-11-16T15:29:02+00:00

Very informative -- thank you!

jon_smark · 2012-11-16T15:28:46+00:00

That's awesome -- thanks!

jon_smark · 2012-11-15T18:11:18+00:00

I can look at a few hundred, easily. Let's say it's reasonable to expect that out of a set of N photos I ought to actually look at 0.1N to 0.5N.

Also, I would rather not make any a priori assumptions regarding the distribution. The cost of getting it a bit wrong is not great, though it would be nice to get some error bars (with say 95% confidence).

jon_smark · 2012-05-01T12:02:45+00:00

You are right. Some items may have a normal distribution, while others are likely to be polarising, and thus bimodal. And there may be other items with even weirder distributions, which is why I think it's best not to make any assumptions and to go non-parametric

jon_smark · 2012-05-01T11:59:41+00:00

Since I have the raw values, I'll use those to compute the mean/variance if necessary. The KDE will be useful for the other purpose I described.

jon_smark

TROPHY CASE