Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 441. (Read 1260350 times)

Your argument is essentially that TSMC might have poor precision, but they wouldn't have poor accuracy. Your argument is that TSMC would not have made a systematic error in their production process. I think it is quite plausible that TSMC might have had one of their machines poorly calibrated for the low voltage threshold transistor type that is so important for bitcoin mining ASICs, but less important for most other applications.

By the way, is that username chosen to deliberately troll people?

For those of you who don't understand semiconductors: You do not get multi lots and multiple wafers of an "EXTREMELY SLOW CORNER." Stop letting Guy take advantage of your lack of knowledge. Given the orders which they have in the pipe and what they have communicated, I would guess there are AT LEAST 12 lots (25 wafers per lot) in the pipe. You do NOT get 12 lots processed systematically to a slow corner unless you deliberately asked for it.

You're welcome

2% is a little difficult to notice.

I think my SP30 might be running a little bit faster now on 260V than when it was doing burn-in in Israel (probably at 230V). The difference looks like about 1-2%, if it's not just my imagination. That might just be due to tweaking or a firmware update, though. I doubt it's due to cooler temperatures, because 93% of my datacenter's cooling equipment is still offline and we're running at 27°C intakes.

One of these days, I'll have to figure out the format for /mnt/mmc-config/rrd/hashrate.rrd so I can actually compute the numbers instead of guesstimating from the graphs...

In other news, the performance of my SP30 seems to vary by roughly 8 GH/s per 1°C difference in intake temperature. Last evening, when intake temps were around 22°C, I was getting around 4530 GH/s out of my SP30, but now, with intake around 28°C, I'm getting around 4485 GH/s. I'm looking forward to summer ending and improving our cooling.

My Units are not showing any noticeable impact on 208, Im happy to let you remote in and play with the settings if that will help

208 is a bit low, and might have some small performance impact (~2%) - it really depends on exact voltage.
We will investigate next week to see if we can improve that.

By the way, here's a little mod to SP10s and SP30s to improve the graphs. This changes the graphs so that they don't start the vertical axis at 0, and instead start it at something close to the lowest hashrate observed by the unit. This makes it much easier to see what's going on in detail.

First, enable SSH access via the WebUI if you haven't already. You'll probably need to create a password. Then:

Next, use the arrow keys to scroll down to around line 60, to the line that says
and press 'i' (to go into 'insert' mode in vi). Add a # sign at the beginning of the line, so it says
and then press ESC (to leave insert mode), then type ':w' and enter (without quotes, to write to disk), then ':q' and enter, and you're done! Graphs should update with the new vertical axis in a few minutes, or you can type
to make it update immediately. Type "exit" (enter) to quit the SSH session.

I think the algorithm is pretty awesome. I think it would be awesomer if it had a temperature coefficient built in, of course, but it's still pretty great.

I'm an electrical engineer. I've made consumer hardware devices before. Sometimes they fail. Sometimes when they fail, it's a design error. Usually, it's a manufacturing error. I'd say the chances are pretty good that something wasn't soldered properly, or there was a capacitor that blew, or a fan locked up, something like that. My expectation is that about 80% of the failures Spondoolies gets would have happened even at 1250W. I could be wrong, though.

With all due respect, I do have some doubts about that program which pushes PSU to the actual limit through repeated shutdowns.
Could it be the culprit? Perhaps, it is better to limit power to 1300 or even 1250W?
It is not worth a few extra GH if it significantly increases the PSU failure rate (for the purposes of argument- I don't know if this is true or not).

Very well said

I really like this.  Why don't we have a counter: 124/1200 out the door on 08/15/14


We all appreciate this thanks.  However, that doesn't preclude them from publishing some estimations about where they are and where they expect to be at the end of the week.  We are trying to make serious plans which are contingent upon these arriving.  Open ended: after Aug 15th really screws our ability to operate with efficiency.  ST knows when that group buy will begin to ship and approximately how many units per week are possible.  Thus, they could be giving some pretty good guesses now as to where we all are.

Silence is KnC's trademark.  ST doesn't need to use their playbook.

Let have some progress reports - even if they are not 100%

Our margins are REALLY thin.  In part this is due to a reduced hash rate.  Careful planning is essential to squeeze out a tiny profit.  I'll miss this tiny profit if I don't have the information which ST clearly knows.  Why can't they just give us a better update on where we are and where we expect to be at the end of the next week?  I'll end up paying an extra month rent if I don't get this right.

Is there any official date for when the RoadStress group buy units are shipping to the hosting facility?

As the last units of this week were produced and shipped today, I think my assumption of groupbuy units shipping after the 15th will prove to be quite accurate.

I understand how painful it is to wait for ordered miners, but I am sure spondoolies is producing a quality product as fast as possible.

Good point -- unless it is shipping unit # 150 / 2000 and we know what shipping unit # our individual orders are

That gives you little indication, as some orders contain 30+ units, and some only one.

For planning purposes ... Can you tell us what order number you are currently shipping and when you expect to ship the balance of the Aug GB units?

Suggestion:  In the order status, how about putting an "anticipated ship date"
or something on the website, "currently shipping order #"

wanna swap? I have a Titan on order (heh) you could then 'experiment'

as to the hosting compensation if a unit is down..on the WA DC site ....would they also compensate if my unit goes 'poof' or am I screwed for 3 weeks or
so if it had to be RMA'd back to spondoolies (new to hosting)

thanks

Searing

KNS Nesletter:
"Since the Neptune was released it’s firmware has been updated and Neptune owners worldwide have been fine-tuning their settings to achieve maximum efficiency. Through this widespread deployment we’ve been able to gather info on how much power they consume in different environments, voltages and setups - and can conclude that the Neptune is the most efficient Bitcoin miner on the market today.

Here’s a comparison chart with the a few of the most talked-about hardware miners’ power requirements as reported by their users online - or - as stated/promised by it’s manufacturer (one may read such claims with a ”grain of salt”).

POWER (J/GH) - at-the-wall

0,57 J/GH - KNC Neptune - 1950 watts at 3400 GH/s (reported average)
0,62 J/GH - Bitfury BF3500 - 2200 watts, 3500 GH/s (stated, unconfirmed)
0,76 J/GH - Spondoolies SP30 - 3200 watts at 4200 GH/s (reported average)
0,77 J/GH - Antminer Bitmain S3 - 388 watts at 441 GH/s (reported average)
1,10 J/GH - Terraminer IV - 2200 watts @ 2000 GH/s (stated, unconfirmed)
1,20 J/GH - Avalon3 - 350 watts @ 290 GH/s (stated, unconfirmed)

”Reported average” = average real-world figures as reported by users.
”Stated” = as promised by it’s manufacturer, not sufficiently confirmed by user reports.

The Neptune Bitcoin Miner has actually reached even lower figures in specialized setups, as low as 0.43 J/GH, as reported by some of our customers."

They are so arrogantly full of shit :-)

Yes I am aware of that, but spondoolies configures and hosts the units. So I can't change that on my own.
But it seems they have a good eye on the devices and so it is not necessary for me to see each device.

208V is fine.
I have 3 machines operating on 208-210 (According to the machines) and all of them are running almost exactly 4.5Th @ 2950-3050W, right on spec.

Zvisha will reply on Sunday.