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Re: Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!)
Double check me on this:
Code:
tx_pre_w <= s0(rx_w[2]) + rx_w[1]; // Calculate the next round's s0 + the next round's w[0].
tx_new_w <= s1(rx_w[14]) + rx_w[9] + rx_pre_w;
tx_new_w <= s1(rx_w[14]) + rx_w[9] + rx_pre_w;
right.. though the tx_pre_w can be saved at w[0]'s place that is to be transmitted to next loop, it will save a register..
Re: Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!)
if the above solution is applied, the calculation of new_w will be the new critical path...
new_w = s1_w + rx_w[319:288] + s0_w + rx_w[31:0];
again s0_w can be calculated a loop ahead and added to rx_w[31:0]. this way our new_w will be shortened to:
new_w = s1_w + rx_w[319:288] + rx_w[31:0];
dcreasing the critical path and possibly increasing the clock frequency...
Can anbody tell me the %age LUT utilized after synthesis... there may be a possibility of replacing the adders logic...
new_w = s1_w + rx_w[319:288] + s0_w + rx_w[31:0];
again s0_w can be calculated a loop ahead and added to rx_w[31:0]. this way our new_w will be shortened to:
new_w = s1_w + rx_w[319:288] + rx_w[31:0];
dcreasing the critical path and possibly increasing the clock frequency...
Can anbody tell me the %age LUT utilized after synthesis... there may be a possibility of replacing the adders logic...
Re: Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!)
For S6-LX150, this is probably the preferred project to start from:
https://github.com/progranism/Open-Source-FPGA-Bitcoin-Miner/tree/master/projects/LX150_makomk_Test
You'll want to adjust main_pll.v:98 to 5 for 50MHz, to make the compile easier and the firmware actually usable (assuming you have the S6-LX150T dev board) without cooling.
https://github.com/progranism/Open-Source-FPGA-Bitcoin-Miner/tree/master/projects/LX150_makomk_Test
You'll want to adjust main_pll.v:98 to 5 for 50MHz, to make the compile easier and the firmware actually usable (assuming you have the S6-LX150T dev board) without cooling.
well i had used LX150_test. and i dnt have a lx150 dev board, so i think i will just share my ideas here..
the critical path in this circuit is "t1 = rx_state[`IDX(7)] + e1_w + ch_w + rx_w[31:0] + k"..
but k and rx_w[31:0] can be calculated one loop ahead and added to rx_state[`IDX(7)] at the point below:
state_buf[`IDX(7)] <= rx_state[`IDX(6)];
the new code should look like this:
state_buf[`IDX(7)] <= rx_state[`IDX(6)] + rx_w[31:0] + k;
----> where k and rx_w are of next loop
This will reduce the adders to:
t1 = rx_state[`IDX(7)] + e1_w + ch_w;
this should improve clock speed, provided routing issues dont interfere....
Re: Official Open Source FPGA Bitcoin Miner (Spartan-6 Now Tops Performance per $!)
hi to all,
i am having a little trouble here. I had some experience in designing sha1 hash cracker on fpga, so this project caught my interest. When i downloaded the code and tried to compile it for S6 lx150, it took about an hour to just synthesize the code and then the software said i had overused my resources.. so i wanted to knw, where did i go wrong?...
i am having a little trouble here. I had some experience in designing sha1 hash cracker on fpga, so this project caught my interest. When i downloaded the code and tried to compile it for S6 lx150, it took about an hour to just synthesize the code and then the software said i had overused my resources.. so i wanted to knw, where did i go wrong?...
My FPGA design can do 1GH/s on Stratix IV 530. The dev board costs USD$8k, and would need fan/heatsink added. I'm guessing that power usage would be around 40-50W?
Is it stand alone? or a computer is required?
Usually the designing software could provide the power requirements of a system, try checking that..
sorry, i wasn't talking about design feasibility, rather the market feasibility... what any designer would need to know is the worth of his effort... if i develop a system and people still prefer GPU's over fpga rigs, then why would i want to waste my time?... in short if i could such a system in the market, how many people would want to buy it?
I am a newbie in the BTC world and I was wondering what would be the feasibility of an fpga based hardware with these specs:
900Mhashes/sec
about 5 watt power consumption
$1300-$1500 unit price
900Mhashes/sec
about 5 watt power consumption
$1300-$1500 unit price
Hi. I'm also new to the BTC world, but I'm an electrical engineer and I've been following the threads on FPGA mining recently. I think that for that hash rate, your power target is off by about a factor of 25 and your price target is off by at least a factor of 2.
Disclaimer: I have not yet built, designed, used or measured an FPGA based mining rig. If one of the experienced FPGA miners drops in here, they may be able to provide a more accurate estimation. Maybe I'll play around with FPGA mining myself sometime, if I don't get distracted by a shiny object first.
well what are fpga's worth for if they consume 5*25=125 watt?? it may rise upto 10 watt but not more....
I can design the system with above specs but i really need to know if such a system is feasible....
Hi,
I am a newbie in the BTC world and I was wondering what would be the feasibility of an fpga based hardware with these specs:
900Mhashes/sec
about 5 watt power consumption
$1300-$1500 unit price
??
I am a newbie in the BTC world and I was wondering what would be the feasibility of an fpga based hardware with these specs:
900Mhashes/sec
about 5 watt power consumption
$1300-$1500 unit price
??
well i see that most of the people here are in favour of GPU's.. but fpga are not as costly as we think...
I am not a miner, rather an fpga system developer. and if the estimates on these forums are accurate, i am quite sure that the fpga can take over gpu anytime. it is just till the right product gets in the market.
I am not a miner, rather an fpga system developer. and if the estimates on these forums are accurate, i am quite sure that the fpga can take over gpu anytime. it is just till the right product gets in the market.
Hi,
I am an engineer and i saw this thread while surfing, http://forum.bitcoin.org/index.php?topic=8543.200. I believe i have some great updates to share as i am working on an fpga mining system which is hoped to outclass GPU mining. So, can you please drop the restrictions as i am writing this request to you instead of preparing for my exam due on monday.
regards,
I am an engineer and i saw this thread while surfing, http://forum.bitcoin.org/index.php?topic=8543.200. I believe i have some great updates to share as i am working on an fpga mining system which is hoped to outclass GPU mining. So, can you please drop the restrictions as i am writing this request to you instead of preparing for my exam due on monday.
regards,