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Avalon's packaging of Batch#2 is first class 10/10. Lots of foam padding and bubble wrapped.
Avalons ship w/o any RF antenna and Power cable so that it really is what is advertised, that it's an engineering sample. Good move Bitsyncom!
Beware customs have been snooping inside the packages, before shipping in China. One of the packages was delayed due to customs.
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I will hook up a Kill-a-Watt and check both the boards with the same bitstream.
It is a proxy, but not perfect measurement for power differences.
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Thanks... i think $39 is a stupid low price. It practically ensures that they check it. The last paragraph sound a bit like someone played snitch. What an ass if true. Will Serbian customs auction that blade on ebay or will the buyer get a chance to pay the fine? |
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Okay I tried the 600MH/s bitstream on a second Kintex-7 325T device and the temps are 70C. For the record in the same environment the other Kintex-7 325 chip hovers at 30 - 35C in the same setting.
So I pretty much guess Xilinx is downselling some of the higher performing chips which can be good if these chips are bought in bulk and can be user-binned.
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I have a question about compiling sha256_pipes2.v under Vivado. It compiles fine under Xilinx ISE, but vivado seems to not like this source, it always points the following line with syntax error. for (i = 0; i <= STAGES; i = i + 1) begin : S Anyone got this verilog source to compile in Vivado? |
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THX, where are you from? How did it went thru customs?
Did you get some invoice?
-> I live near Rotterdam in the Netherlands. No custom problems I think there was an invoice on the outside of one box, I will check later. Yes, that is what I had. 4 days from Hong Kong to Atlantic City, New Jersey USA with no customs issues. I am have posted my setup experience, pictures, and I am also tracking the profitability of operating the units and I am posting the payouts that I get: http://cointext.com/When you say 4 days from HK to NJ, does it mean you received your Avalons on the fourth day or the fifth day? Thanks. I got the tracking number on Wed. It left HK on Friday. Arrived in NJ on Monday. Thanks! +1 |
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THX, where are you from? How did it went thru customs?
Did you get some invoice?
-> I live near Rotterdam in the Netherlands. No custom problems I think there was an invoice on the outside of one box, I will check later. Yes, that is what I had. 4 days from Hong Kong to Atlantic City, New Jersey USA with no customs issues. I am have posted my setup experience, pictures, and I am also tracking the profitability of operating the units and I am posting the payouts that I get: http://cointext.com/When you say 4 days from HK to NJ, does it mean you received your Avalons on the fourth day or the fifth day? Thanks. |
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I have requested a pull for the open-source fpga project on github. Hello goxed! I just checked your pull requests. There are no code changes in them. One just adds a file named "600MHz" with the text "600MHz" in it. The other is the same. There must have been a mistake somewhere. Hey thanks for letting me know. my bad! I think I have to learn how to correctly use github. |
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Given that the Spartan 6 150's on other mining boards burn ~10W and only run at ~27C under a small (40mm squared) heat sink and moderate airflow, I would have thought that the Kintex is far more likely to be running at around 30C than 70C. If it is burning 10W then that heatsink and fan would have to have a thermal resistance of 5C/W to get the chip that hot - and that's pretty crappy for a heatsink with a fan...
As I remember Spartan-6 has no internal temp measuring, isn't it? My Spartan-6 boards on by both mq boards said round about 40 °C at room temp of 25 °C = 15 K difference. But they have an gpu cooler with an 6cm diameter. The KC705 cooler with running fan tastes more than 40 °C (my finger means it's nasty warm, not to leave them to long on the cooler). So the internal +50 K looks like is a fact. I checked the coolers stats from malico.com.tw web site (30x30x6 = MLT30-06) which I've measured. The stats says for that cooler an resistance of 4.82 K/W @ 200LFM to 2.4 K/W @ 600LFM. I'm unshure whats LFM means. The Fan is 30x30 mm 2. I've found an titan TFD-3007M12S which could have 5m 3/h (2,95cfm). I guess with values + internal resistance ~ 4K/W at >12W on chip looks like is not so much aside from you calculation. The cooler on MMP K7 boards which runs only on 350 MHz because of the limited pdc tastes warm round about <40°C, but not hot. With <8W and reported internal 55° C that's consistence to the KC705. I will search my PT100 thermometer to check the temp later on cooler, but I guess that the high results are a fact. I tried to start chipscope but never did this before and have problems how to do that  Hey can you please report your KC705 VccInt from either XADC / chipscope or a DMM? Mine's 1.05V |
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Given that the Spartan 6 150's on other mining boards burn ~10W and only run at ~27C under a small (40mm squared) heat sink and moderate airflow, I would have thought that the Kintex is far more likely to be running at around 30C than 70C. If it is burning 10W then that heatsink and fan would have to have a thermal resistance of 5C/W to get the chip that hot - and that's pretty crappy for a heatsink with a fan...
The KC7k325T kintex-7 FPGA on my KC705 board has consistent temps between 25 to 35C hashing as 600MH/s. I am using the default heatsink, and reading temps off the chipscope. I will soon have access to another kc705, and will report its temps once ii is set up. |
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Is your fan rotating at full speed?
Depends on noise...yes. Is it readable? As I understood theres a pin on fpga which powers the fan. Possible the rotate count information from the fan could been connected to the fpga for calculation by an counter. But I think that it is Here is my temperature while mining at 600MHZ
2013-05-23 22:28:30.048826 [500] stdout: Temperature: 26.8926113129
Thats to less or you are living in Alaska and your miner is outside  Could you check the temp calculation? It's a good idea to modify the print line given above with my extension to have an cross check. Eighter the calculation in the python script is wrong or your kc705 reports really to less temperature or mine reports to much. In my opinion with this cooler and the amout of 12 W consumption the temperature should been room temp + 40 °C estimated. By me it should 66° C but at the moment I get 71°C. I've clocked now my fpga to 550 MHz and Vivado reports < 12 W. My AVNet MMP reports 55 °C at <8W which confirms the values of KC705. So lets precheck the calculation of: 2013-05-24 04:22:30.601187 [500] stdout: ('Temperature: ', '0xB20A', 77.34701766967777) The formula on README of OSFPGA KC705_Experimental says: Temp (C) = reading * 503.975 / 65536 - 273.15: Python 3.2.4 (default, May 8 2013, 20:55:18)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 0xB20A
45578
>>> 0xB20A * 503.975 / 65536
350.49701766967775
>>> ( 0xB20A * 503.975 / 65536 ) - 273.15
77.34701766967777
>>> 0xB20A * 503.975 / 65536 - 273.15
77.34701766967777
I will edit the python code in a day or two. currently trying to improve the miner. But meanwhile here is temperature output from Chipscope while mining at 600MHz.  |
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according to the kc705 datasheet pg 65, the PmBus has to be read using a PMBus pod from Texas Instruments to figure out current drawn from the voltage regulators.
Using chipscope one can monitor the voltage though.
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received shipping info as well.
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Is your fan rotating at full speed?
Here is my temperature while mining at 600MHZ
2013-05-23 22:28:30.048826 [500] stdout: Temperature: 26.8926113129
2013-05-23 22:28:30.298841 [350] Untitled KC705UART worker: Found share: XXXXXXX
:000000021910f9e1ac919036f4c838972845e8bff5a5676eaa8294fc0000008500000000495a089
9298a623a17a125e003af676ad660389dfc2e3ab7269cafdc95f292f3519ede561a017fe9:b54360
0a
2013-05-23 22:28:30.339843 [250] Untitled KC705UART worker: Eclipse accepted sha
re b543600a (difficulty 1.39333)
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70C. The chip is rated to 85C, what temperature were you at at 600mhz
implemented various implementation strategies to cherry pick get a good bitstream running stable at 550MHz+. The temperature is between 30 to 45 C depending on the time of day. My KC705 came with a heatsink + fan though. Hmm, I used exactly you vivado project to create an bitstream. But the temparature is near by 76-78 °C realted to my room temperature (24 °C at the moment): 2013-05-24 01:20:10.619202 [500] stdout: ('Temperature: ', 76.9086849212647) I'm still on 600 MHz at the moment because it looks like stable. In my opinion we should switch the clock frequency dynamicable to an less value if the temp will increase over an limit, e.g. 80 °C. What do you think? It should not be so hard to do that. My heatsink + fan looks like the same as on your pictures. Hmm this is interesting. My room temp is 26C, and the FPGA never reported more than 45C on the 600MHz bitstream. |
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14 units accounted for. Please reply if you received a Batch#2 and your details are not on Page1.
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But my FPGA still runs fine at 600MHz.
I guess it's stretching the limits. Also it could vary chip to chip, since -3 speed grade has a Fmax of 601.32MHz Did you just modify the clock on fpgaminers code? I upped the clock to 450mhz and it was running stable at 70C. The chip is rated to 85C, what temperature were you at at 600mhz Very minor mods. I modified settings of the FIFO, and the Clock multiplier. I can PM you my vivado project. Moreover I implemented various implementation strategies to cherry pick get a good bitstream running stable at 550MHz+. The temperature is between 30 to 45 C depending on the time of day. My KC705 came with a heatsink + fan though. |
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