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Author Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 and 860 MH/s FPGA Boards  (Read 174177 times)
ztex
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July 12, 2012, 10:18:32 AM
 #821

2 Feature requests/suggestions:
- Would be nice to be able to print out boards stats with a command. Now it automatically does it from time to time, but the wait is pretty long..

Has been implemented since the test version 120622. It's the "i(nfo)" command.

Quote
- Also, identifying boards in a cluster is quite impossible (without labeling them). Would it possible to add a command to blink an LED on a board by entering it's serial number?

For that purpose the labeling / serial number function was implemented. Use it, if you need it.

A disconnect command is planned for future. It would allow to identify the disconnected device by the "configure-me" LED's

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July 12, 2012, 11:45:45 AM
 #822


A disconnect command is planned for future. It would allow to identify the disconnected device by the "configure-me" LED's


Ok, good. This makes it easier to spot a unit with a low hash rate due to heatsinking problems.

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July 13, 2012, 08:04:32 AM
 #823


A disconnect command is planned for future. It would allow to identify the disconnected device by the "configure-me" LED's


Ok, good. This makes it easier to spot a unit with a low hash rate due to heatsinking problems.

I strongly recommend the serial number function in clusters. What happens if there is a faulty USB cable in a 100 board cluster and the boards are not labeled? No BTCMiner command will help ...

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July 13, 2012, 10:12:59 AM
 #824

If BTCMiner block monitor detects a new block, shouldn't the longpoll request be reset?

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July 16, 2012, 07:10:54 AM
 #825

If BTCMiner block monitor detects a new block, shouldn't the longpoll request be reset?

If block monitor detects a new block new work is requested.

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July 16, 2012, 09:59:04 AM
 #826

Yes, of course, but that also means that the longpoll probably doesn't work (timed out or was cut off by some router) and should be reset too?

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July 18, 2012, 10:58:13 AM
 #827

Yes, of course, but that also means that the longpoll probably doesn't work (timed out or was cut off by some router) and should be reset too?

LP and BM (block monitoring) are two independent mechanisms. The pool server (that responds to the LP) does not know when BTCMiner detected a new block by BM.

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July 18, 2012, 09:41:46 PM
 #828

Yes, again I know (having written my own pool) but if the longpoll doesen't trigger it's very likely that the longpoll connection is dead (TCP layer) and will never trigger, so to make sure the longpoll is used as much as possible, you should reconnect it!

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July 19, 2012, 03:45:05 PM
 #829

What happens if there is a faulty USB cable in a 100 board cluster and the boards are not labeled? No BTCMiner command will help ...
It would be nice to use the setserial-function via some "blinkserial"-option so that the called serial(s) begin to blink leds (for e.g. 3min or a time in seconds set via the option) without disconnecting. Also this could help identifying all boards while running and enabling the admin to (re)label them if needed..

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July 20, 2012, 09:00:22 AM
 #830

Yes, again I know (having written my own pool) but if the longpoll doesen't trigger it's very likely that the longpoll connection is dead (TCP layer) and will never trigger ...

Not never, only for 16min 40s. This is the read timeout.

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July 20, 2012, 09:06:43 AM
 #831

What happens if there is a faulty USB cable in a 100 board cluster and the boards are not labeled? No BTCMiner command will help ...
It would be nice to use the setserial-function via some "blinkserial"-option so that the called serial(s) begin to blink leds (for e.g. 3min or a time in seconds set via the option) without disconnecting.

It's difficult to send a command over USB if USB cable is broken. Therefore: label it.

Furthermore only 1.15x boards have a general purpose LED which could be used for this purpose.

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July 20, 2012, 04:20:03 PM
 #832

Yes, again I know (having written my own pool) but if the longpoll doesen't trigger it's very likely that the longpoll connection is dead (TCP layer) and will never trigger ...

Not never, only for 16min 40s. This is the read timeout.

Where did you get 16:40 from? just random or is it in some spec.?

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July 20, 2012, 05:09:36 PM
 #833

Where did you get 16:40 from? just random or is it in some spec.?

It equals to a nice round number: 1000 sec.
Only programmers notice these things Smiley
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August 16, 2012, 12:04:21 PM
 #834

I'm having issues running a cluster of 16 Ztex 1.15x boards with CGMiner or BFGMiner on Raspberry Pi. For some reason, 1random board dies within 1 hour and LED 2 goes on. Then it keeps mining nicely as long as I leave the dead board connected. If I disconnect the dead board, soon another board dies. Everything works on BTCMiner, so I doubt it's a USB cable. LED 2 points to the EZ USB, any ideas?

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August 16, 2012, 01:02:17 PM
 #835

I'm having issues running a cluster of 16 Ztex 1.15x boards with CGMiner or BFGMiner on Raspberry Pi. For some reason, 1random board dies within 1 hour and LED 2 goes on.

It's still alive, it's just twiddling thumbs. If LED2 is on the board is in power save mode. This happens if the board receives no new work for 5min.

I'm not familiar with BFGMiner please report this bug in the BFGMiner thread (or use BTCMiner).


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August 16, 2012, 04:18:15 PM
 #836

I'm having issues running a cluster of 16 Ztex 1.15x boards with CGMiner or BFGMiner on Raspberry Pi. For some reason, 1random board dies within 1 hour and LED 2 goes on.

It's still alive, it's just twiddling thumbs. If LED2 is on the board is in power save mode. This happens if the board receives no new work for 5min.

I'm not familiar with BFGMiner please report this bug in the BFGMiner thread (or use BTCMiner).


Thank you for your analysis. I've already contacted developers of both programs, but was trying to get some more clues as to what is causing this. You see the miner software thinks the board is not responding and thus first declares it as "sick" after 60 or 90 sec of inactivity (don't remember precisely) and tries to restart it. That seems to fail every time. Then it's finally declared "dead" after 10 minutes of inactivity. Interestingly enough, this bug doesn't seem to affect rigs which also have GPUs in them.

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August 24, 2012, 11:38:26 AM
 #837

I can provide solid copperplates to cool the backside of the ZTEX platine.
these professionally milled plates are 5mm thick and should increase the MH/s at least a little bit and support the longevity of the board.
prices strongly depend on volume. assuming at least 20 plates for the y-version (4 FPGAs) are ordered,
the price would approximately be 29€.
for singles approximately 15€. you can pay in BTC of course.
postage is extra. every y-plate weights about 400g. I send from germany.
please post your interest or send pm.

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August 24, 2012, 12:47:19 PM
 #838

I can provide solid copperplates to cool the backside of the ZTEX platine.
these professionally milled plates are 5mm thick and should increase the MH/s at least a little bit and support the longevity of the board.
prices strongly depend on volume. assuming at least 20 plates for the y-version (4 FPGAs) are ordered,
the price would approximately be 29€.
for singles approximately 15€. you can pay in BTC of course.
postage is extra. every y-plate weights about 400g. I send from germany.
please post your interest or send pm.

please send pictures of this.

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August 24, 2012, 12:58:07 PM
 #839

I can provide solid copperplates to cool the backside of the ZTEX platine.
these professionally milled plates are 5mm thick and should increase the MH/s at least a little bit and support the longevity of the board.
prices strongly depend on volume. assuming at least 20 plates for the y-version (4 FPGAs) are ordered,
the price would approximately be 29€.
for singles approximately 15€. you can pay in BTC of course.
postage is extra. every y-plate weights about 400g. I send from germany.
please post your interest or send pm.

Can you be more specific on how many MH/s increase to expect?
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August 24, 2012, 03:04:10 PM
 #840

I can provide solid copperplates to cool the backside of the ZTEX platine.
these professionally milled plates are 5mm thick and should increase the MH/s at least a little bit and support the longevity of the board.
prices strongly depend on volume. assuming at least 20 plates for the y-version (4 FPGAs) are ordered,
the price would approximately be 29€.
for singles approximately 15€. you can pay in BTC of course.
postage is extra. every y-plate weights about 400g. I send from germany.
please post your interest or send pm.

please send pictures of this.

I'm also interested in pictures as well. Some thermal or speed measures are also certainly welcomed. Smiley
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