Latest posts of: dgtlmrln

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on: June 23, 2011, 08:33:48 AM

Well, according to http://bitminer.info/, the 8400 GS only gets about 2 MH/s... NVidia cards really aren't the best mining tools I'm afraid :/

on: June 21, 2011, 04:23:59 AM

I decided to do some testing to see if I could get a better estimate of my hashing power. I modified mine.tcl to poll my hashrate (based on a 10 minute average) from deepbit every time I timeout searching for a golden ticket (so approximately every 20 seconds). I then average my polls to get an estimate. After about 4 hours of running my estimate is ~ 13 MH/s. Looks like I was just getting lucky earlier Quote from: makomk on June 20, 2011, 04:14:16 PM Quote from: dgtlmrln on June 20, 2011, 02:02:21 AM I'm running makomk's branch on a DE2 (not -115) at 80MHz with CONFIG_LOOP_LOG2=3. I should be able to run at at least 90MHz because I have plenty of slack but I haven't had the time to look into that yet. At the moment, setting a higher frequency causes "Place & Route" to do worse instead of better. Should be 10 megahash/sec in theory, yeah. I'm surprised you managed to reach 80MHz though. Just to check, you're not running one of my older branches that's broken with CONFIG_LOOP_LOG2!=0? They should all be clearly labelled and it would probably be obvious if you were because you wouldn't get any shares, but still... I believe I'm using your master branch. I did try one of your broken branches: I was able to get 100 MHz with CONFIG_LOOP_LOG2=2! I knew it didn't make any sense, but I went ahead and tried it anyways. Of course all my submits were rejected.

on: June 20, 2011, 02:02:21 AM

First off, I'd like to say that I totally love this project. I've been out of the loop in terms of hardware design for the last 3-4 years and this project is giving me the motivation to get back into it I'm running makomk's branch on a DE2 (not -115) at 80MHz with CONFIG_LOOP_LOG2=3. I should be able to run at at least 90MHz because I have plenty of slack but I haven't had the time to look into that yet. At the moment, setting a higher frequency causes "Place & Route" to do worse instead of better. Anyways, my question is this: How fast am I hashing? If I understand correctly, the frequency that I'm running at is approximately my hashing speed... So assuming fully unrolled, 80 MHz would give me 80 MHashes/s. However, with CONFIG_LOOP_LOG2=3, my hashing power should be 80 * (0.5 ** 3) or 10 MHashes/s. However, based on shares submitted to a pool, I'm very roughly estimating ~25MHashes/s. Is there a way to get a better idea of how fast I'm hashing?

on: June 19, 2011, 04:30:44 PM

I've got an older ATI HD 4650 running under ubuntu. Using aticonfig, the lowest I can set the memory clock to is 400MHz. Is there a way around that?

on: June 19, 2011, 08:26:48 AM

How about an escort service that accepts bitcoins?

on: June 19, 2011, 03:17:03 AM

I'm envisioning the need for untraceable currency...

on: June 19, 2011, 02:52:56 AM

I think I understand now... As we get close to the year 2140 / 21,000,000 BTC, won't the difficulty drop? (all the more difficult blocks will have been solved and the 6 blocks / hour would be enforceable?)

on: June 19, 2011, 01:09:21 AM

According to http://bitminer.info/ Quote The cost to mine a single BTC varies wildly per day. This has to do with the way the blocks are calculated. Some days the difficulty is higher than other days. Today's current difficulty is: 877226.66666667 From what I'm reading in this post though, this isn't true? Or perhaps this was true when bitcoin first came into existence?

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