Latest posts of: Chris Acheson

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321

Other / Obsolete (buying) / Re: [30 BTC] Tuition: Teach me to compile Win32 bitcoin client.

on: May 27, 2011, 10:02:28 AM

The prereqs for this are taking a really long time to build (possibly because I'm running it on a VM which is only using one core). I need to sleep, as it's 6 AM here. I'll PM you my contact info.

322

Other / Obsolete (selling) / [SOLD] XFX 5870 - $200 (worth of BTC)

on: May 27, 2011, 09:57:09 AM

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Selling a 1GB XFX 5870, Model number HD-587X-ZN. Comes with the box and all accessories. I'll take $200 (worth of BTC) for it, unless I hear any better offers. I paid $240 for it, but I'd rather move it sooner rather than later. $15 for standard USPS shipping, $20 for priority mail, $50 for express mail. Shipping outside the US probably won't be worth it. Full disclosure: this is an XFX card. It runs kinda hot (around 75C for me with the fan speed adjusted) and the fan is loud. You'll want decent airflow and/or a tolerance for the sound of a hairdryer. To the best of my knowledge, the card is in good working condition. I did have some very minor stability issues with it, but I believe those were due to an inadequate power supply. I was able to get 380 MH out of it when overclocked to stock limits. I haven't replaced the BIOS or anything like that. - -Chris Acheson, 5/27/11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBCAAGBQJN4ADAAAoJEBgPDxtXUJkinTsP/3vfv3cRC4+x2VHQHtGNVPHS pdZanmqr/u9fnvjs9ljYnDvq4FgXIg/ZauT/iNUFL702OrPaQTtoTNtfJUtgZ/bJ GbKjDAu6xKWzeSr/AYp9KY2e5U2O3JjAdJv2PdD1tf28UWwx4vohHhPnG4GUuGXt /EgKlCBT0BXxsL77+WXj/5lfLVptkEHq7P3nKoUEivWx5UtJkt+i0NRiRYi34hac 6Ivgk35aOBBLgFOy4aUmFG6YvcWWygEc8qc/SjQY82oebb49KT9QNoT9jl/+yJLQ Gyv/WN66vh/UQuWdFh7IaFBeYS6NSLPaLIAkfNRoRTQ5+57tg98iFEhPs8OuUCr1 EELI0U3rRaCwe7Ew3Dkt32VLW6n95c+wwxGHrPUj7k6To/Z2ocFS5YByDy5pOdC2 Y7PxsaGqT5rGivTJhE7vePF5BDubdQdpRLGQhdJ/jHrDHc4SLj1oFgxLS4lSH/SC uvQ2cgI0cz1vFXcalo6jqfPBcyYPRRoJtc7e2h6yljqcKIndy/SpWeh6ZbeW7yy1 ugj2w9HqMfBjeb+XuijC/5sIvBbNm2Oxl88wNvfbflrj4fzAg3HvGj0fJsr1hmkJ dQcRvXob4310JD/XzDDMQptEKQtnRCTw1P4ztGRcSnaPEJ9X7tmEAqxYUK8f+0Xo c+COrEhV8pIvXbrEC7iP =y7Rx -----END PGP SIGNATURE-----

323

Other / Obsolete (selling) / [SOLD] I have some extra x1 PCIe extender cables - $8 (in BTC) each

on: May 27, 2011, 09:44:32 AM

I have some extra PCIe extenders that I don't need. I believe they're the same ones that you get from Cablesaurus. I have four x1 cables ~~and two x16 cables~~. $8 (worth of BTC) each, free shipping within the US. For an extra $3 each I'll cut the x1 cables down for you so that you can fit an x16 card into them. YOU CANNOT DAISY CHAIN THEM. I found out the hard way. :-/

324

Other / Obsolete (buying) / Re: [30 BTC] Tuition: Teach me to compile Win32 bitcoin client.

on: May 27, 2011, 09:02:12 AM

I'd like to help you with this. I've used MinGW before, though it's been a while. I'm running through the build right now to make sure I get it right.

325

Economy / Computer hardware / Re: FOR SALE: PCIe 1x & 16x Extender Cables, Mining Chassis & GPU Dummy Plugs

on: May 27, 2011, 07:53:36 AM

Daisy chaining DOES NOT WORK. If you get it to work at all, your system will be horribly unstable. This is unfortunate, because as far as I can tell, it's impossible to get longer cables than the ones Cablesaurus sells for a reasonable price. That said, I've bought several cables from Cablesaurus, and they work just fine, and service has been great. There was a small miscommunication in which I was sent a x1->x16 w/ molex cable instead of a full x16 w/ molex cable. He sent out the proper cable immediately at no charge, and I used to x1->x16 in the meantime. By the way Cablesaurus, I picked up some envelopes today, so I'll send the x1->x16 cable back to you as soon as I get a chance to go to the post office.

326

Bitcoin / Hardware / Re: 100 BTC Bounty: development of efficient open-source FPGA/ASIC mining solution

on: May 27, 2011, 05:27:30 AM

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Unfortunately I'm not in a financial position to be offering bounties at the moment. I withdraw the bounties that I offered on 5/17/11 and 5/24/11 until further notice. - -Chris Acheson, 5/27/11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBCAAGBQJN3zYOAAoJEBgPDxtXUJkig+oP/jgbxVIxOL9EQ8NIJOOkS4gz 2TMpHms88zbUzo24zXPliEcdZp5GrbDKzsHdQlfiRQqpaycD2z/9JQehlh9eFRBK CBGS3DhHP5qhtnhVBWqyJFJt9a1CwssVA3y2x4uWkWuagHXN4Pe1SG1boSS3KwZY HynQ8bcXQ5SJC6Zl/ZvX11DIwX2+Nrv+Iikl1oixpT50VKiiCMMNN4C/3s4OZbNG yKuMtSOlOKJx3vMnO8yNpJQJsXezB0srmpEgaY2MGOVrSVN6jUu9LekH1hVc50nc WkyPmCxjTHcZznsH7SO/6+vJ8aN3J3eg05OQQkAEf4HDezDV5ewv3jeH7E+IFa/j 203r46XH96F6tf563jOXGNY4Fq464Fx1e2N+vEvaZgKmEqXRTY84pp7feAc68El1 EgWXieOfOvIDi+is+1A3cHyQrrFUe3ceUZSzkF3btfRyER+lip5I0yVgry4K7zKK llodGl5EHD/LyaIUrYx/57X8hovx64ozZ5t3h/VtYJ0ZaGsedYk+H2x+nVgLi/qo 1XWgGiafFImig5Qd6QjTAbE4FMVZ7WyFWvr22dZ3xgBJUmuEcNNvgxTW8csQu39F ptJBd3HrCo4kxCrzJ7OcHztEa+vjS07+mM/KggakSOKrlkR+rjd2F3yk8X9gaOxw Uly9jB2gta7/jGiff8ye =Gdgq -----END PGP SIGNATURE-----

327

Bitcoin / Hardware / Re: Bounty: development of efficient open-source FPGA or ASIC mining solution

on: May 24, 2011, 03:18:13 PM

Quote from: fpgaminer on May 20, 2011, 08:49:21 PM But I will continue to work and improve on it. The $0.60 USD requirement is insane, but so am I! I picked that requirement as a "competitive with GPU mining" price point. I think I might be interested in investing in FPGA mining around a $2 per MH price point, so I'll add a second bounty for that. Unless I'm misunderstanding what he said, ArtForz has already achieved this: Quote (05:56:15 PM) ArtForzZy: my S6 LX150s get 113Mhps for $180 per chip It would be good the have bounties at various development milestones anyway. If there's anyone else who wants to change their bounty requirement, let me know and I'll update the original post. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I will offer an additional 10 BTC bounty with the same requirements as my previous bounty offered on 5/17/11, with the exception that the device must cost no more than $2.00 USD per megahash per second. - -Chris Acheson, 5/24/11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBCAAGBQJN28jnAAoJEBgPDxtXUJkinbMQAJUuVqloTeofK+pp3RcU+S7s eC0uWztf7vPYcXnpbigv0Jf2BMvY2CXDj2NmpxW19j0ItvsjdMpDcqib2uqXHjWf UT7iJtoJsH9K0+5oiBvbtZtfUcBtFRA4rwQ8k8erj+ouNXYozMRT0ReGhMSV8SJh Ohoc+jQtdJhSyKsghI9I+CSWDf5MC0wiFn89ZCqBy3kESsrYgGfStbcaMIfIYFqI TZRDlhRNd3fVU4V5fnkieSqNW/8VPUV58xRMsyx3UL3rRL56fpP3dyPyyYkjoG8X Aq9PTDDgRRcV13afG0QiLvkWK9rENegouQkLdIt+qPyudPkhA3N/3dqwvqTgNGTR 39RUI4Z6EwfaetmoVvrhyKke1SV2fC7OdG+0HGn0+oIOgqh7cy1USm8e1QeRaPfI tLZJkQsOEG/P3gildyE11pFuq5q1Ottvy7z6GiqnV7ietgT+7hjb9RoQMwQS15BK MKJ2tEht3DwNU7vT0WeSWG48RNirb8up+c4uJ9fHLdtRsJTo0Ywn28T5xZCjgJRJ EsDajFrT8j0uJTo2DAzzhdfR5XRg/A3z+wI7LWfKe+9qNG+Kr0on/QAhn7wCZkA6 ONDAEiq4QxJ1/40mUcFXoiFN9ROSlwXPRZoiVeqoW91NK1sjOIA5vE0eVEiXsQH8 zrleqx/7nUrBwkS3wk8V =OCTV -----END PGP SIGNATURE-----

328

Bitcoin / Mining / Re: FPGA mining for fun and profit

on: May 19, 2011, 07:58:29 AM

Those of you voicing concerns about the possibility of Bitcoin being taken over by mining corporations with FPGA/ASIC clusters should check out the bounty thread for an open-source FPGA mining implementation. Encouraging people to develop this stuff out in the open will help to prevent any one party from gaining too much of an advantage.

329

Bitcoin / Hardware / Re: Bounty: development of efficient open-source FPGA or ASIC mining solution

on: May 18, 2011, 11:10:57 AM

Quote from: Silverpike on May 18, 2011, 06:19:31 AM I hate to be the one to be the destroyer of hopes & dreams, but I need to explain the economics of this to you guys. Nobody will ever sell you an ASIC miner. The reason is simple: profits. The amount of money to be made selling ASIC is so miniscule compared to the profits that will be made by using them for mining. Using simple estimates, I would say it is 1000x more profitable to use ASICs for personal mining vs. selling them. It makes no sense to sell them to other miners, which only increases the global difficulty anyways. Furthermore, the number of savvy miners around who would buy ASICs is small (I'm guessing less than 100 at the time of this post), so the market is tiny. The only point at which it would make any financial sense to sell them is after the block reward goes down to something really small. At that point, mining would have very limited profitability, and money would be made from transaction fees. Then it may make sense to sell them to other miners. Just as a reminder to everyone, Artforz already has mining ASICs. He is wisely keeping them to himself. This milestone already has been reached, and the number of people who will join this club is very very limited. The numbers in the bounty requirements that I posted are a marginal increase over the efficiency of existing GPUs. The power consumption requirement of 0.3 watts per megahash (as compared to about 0.4 w/mh for a 5970) is pretty much a freebie. The dollars per megahash requirement of $0.60 is not even as good as what you get from a 5850 (mine were 50 cents/mh at $170 each, including express shipping), but is in the same ballpark as a decent price on a 5870. The point of this bounty is not to entice someone to design and give away the ultimate ASIC that's going to render GPU mining totally obsolete. The point is to encourage someone (perhaps a student rather than a full-time professional engineer) to work on optimizing an FPGA design to the point where it's merely on-par with current GPU mining; and to share that design with the community as a starting point for continued open development. This bounty is much more likely to be achieved with FPGAs, but I figure there's no point in excluding an unforseen ASIC-based solution from it. Artforz has stated that his ASICs, while quite power-efficient, are not competitive with GPUs in terms of dollars per megahash.

330

Bitcoin / Hardware / Bounty: development of efficient open-source FPGA/ASIC mining solution

on: May 17, 2011, 09:25:36 PM

I'm splitting this off from the FPGA mining for fun and profit thread. Current contributors: $2.00 USD per MH/s and 0.3w per MH/s: BitterTea - 20 BTC teknohog - 10 BTC ~~cacheson - 10 BTC~~ retracted Milestone Total - 30 BTC $0.60 USD per MH/s and 0.3w per MH/s: ~~cacheson - 10 BTC~~ retracted gmaxwell - 10 BTC riX - 20 BTC gusti - 20 BTC Milestone Total - 50 BTC Grand Total - 80 BTC Those of you who are interested in making sure that Bitcoin remains a distributed system through the transition from GPU mining to FPGA/ASIC mining are encouraged to contribute. I know the total isn't much yet, but if enough of us chip in we should be able to provide a decent incentive. Quote from: cacheson on May 17, 2011, 05:10:06 PM -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I will offer a 10 BTC bounty to the first person who either: 1) Makes publicly available the source code and complete setup instructions for an FPGA-based Bitcoin mining device that can be created with off-the-shelf hardware. or 2) Offers an ASIC-based Bitcoin mining device for sale to the general Bitcoin community, and makes publicly available all schematics, source code, and other relevant information used to develop said device. Either of the above devices must cost no more than $0.60 USD per megahash per second that they provide, and must consume no more than 0.3 watts per megahash. Designs must not be encumbered by any sort of "intellectual property" restrictions, with the exception of GPL-style copyleft licenses. - -Chris Acheson, 5/17/11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBCAAGBQJN0qr4AAoJEBgPDxtXUJkiGM8QAIO+uqNz2vte4lo+BXtbRLsD rxZAKWmnirlrl3+XxyewwFytmufi469qf+gcEvYURXVOfbzB2lT4/SZu3TWpWtuv 8jTeCSlM+AqCs5JJfX0yI86QqSVmCMa7V7cj/sU6Y1ad77JQEiNuoWhfYzUjeaQP naDhlZlw/dbrbWmVPN4NsKawXKqQ0RDOyZfG/y5uLJAvFM6JK3qZ9nWd4aFKkV1K mULv+PJ9vgzDElQKlNfvfQZ7ITYcNM+DER7Dn7p7TgTFlqOnIZz/SfG3c03yWfPB FixNZz0RzzCcCUv0wr086HiLEuC9FB0z3sDxQJvGGQ7LBl+LrlsqvTu+dQLdf5R4 c0HN3RPTm+VIyMv8P/mIiqx05Tfnn1wvdc9AD4L7xwuhlKemHEmMLPueMV82Ciol d7yusC/s+KCOTxkOS4twXDwCQNQi8noYaF+HE0w4mMu8I/NNqyCdi2qExCwO8oqz 6PUnfjKNS302lGHo3Gwh9KXdGSO6tLLX97uRil2i4rHyUz7z4zGBX+2Sla/b12CE Ucwv0u/Kt6mWLQaVd5HzEp8R5GIB/TgUnHl3Z/eh1j85TBpmbyNJnSUO8sG6M9IU uk2nwG8BtF2jDN+237kvNB1FZl7U1wZigahd75zfGe+TfjNIeHLtxEcdZNfCwBIv s8Ga7TYsYeA/+g6Ra75f =onT1 -----END PGP SIGNATURE----- Quote from: gmaxwell on May 17, 2011, 05:23:40 PM -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I will gladly match Chris Acheson's bounty of 10BTC on his terms. A basic FPGA miner isn't a lot of work and it would be a fun project for someone who hasn't done this kind of work before. A _fast_ fpga miner which will achieve competitive performance would be a decent accomplishment. I think it's important to the health, security, and public confidence in bit coin that a few large private parties do not retain a substantial long term advantage in their ability to control the hashchain. Making sure that the public has the lowest cost access to the mining state of the art should be helpful for this purpose. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk3SruYACgkQrIWTYrBBO/p58wCfYeGrfT9ptb/bOapN0zJ0Dt9J XFoAoMuISTUBUGqeOqJc1TBesyG6e0Fh =WAwq -----END PGP SIGNATURE-----

331

Bitcoin / Mining / Re: FPGA mining for fun and profit

on: May 17, 2011, 09:11:16 PM

Quote from: cypherf0x on May 17, 2011, 08:31:57 PM So someone should release the code and maybe get a bounty? You can play with maybe all day. In the end I already have a working prototype and now someone else with more FPGA experience than myself to polish the code. He develops chips for a living, I develop hardware boards and embedded software so that seems like a pretty reasonable combo for getting something done. If you're serious about this, you should arrange to have the contributions put in escrow until you actually release something. Just putting up a black-hole donation address means that no one knows how much has been contributed, and if the total only gets halfway there the whole thing's a loss. Anyway, the bounty isn't aimed at you specifically, so I'm going to split it off into its own thread.

332

Bitcoin / Mining / Re: FPGA mining for fun and profit

on: May 17, 2011, 08:11:44 PM

Quote from: Grinder on May 17, 2011, 05:26:33 PM Quote from: cacheson on May 17, 2011, 05:10:06 PM I will offer a 10 BTC bounty to the first person who either: You probably have to make that bounty about 1000 times higher to make it remotely interesting to those who have the know how and money to make this stuff in the first place. Quote from: cypherf0x on May 17, 2011, 05:31:25 PM The bounty is laughable... A person keeping the code to themselves could profit a lot more than that and keep the competitive advantage. You may not like it but it's capitalism and just a good business practice to keep that advantage. I'm not looking to finance the entire project myself. If I were, I'd just hire an engineer and not bother talking about it here. I'm trying to get the ball rolling and prompt others who are also concerned about Bitcoin remaining a distributed currency to chip in. Quote from: cypherf0x on May 17, 2011, 05:31:25 PM Ok, buisiness... I have agreements not to release my current design which involves FPGAs 142MeH5qrYmHBEGkzVYGMKaLc66KVHZe4q If I get enough to that address to fund getting an ASIC produced, I will along with an easy to use board. Really? We should give you money so that maybe something will come of it?

333

Bitcoin / Mining / Re: FPGA mining for fun and profit

on: May 17, 2011, 05:10:06 PM

Quote from: cypherf0x on May 17, 2011, 04:16:30 PM Apologies but no more development information will be posted. I've been offered a 25% share from someone that owns 2 FPGA clusters. If you haven't seen that type of hardware before think a 156 FPGAs per machine. I was afraid this would happen. I don't think it's good for this stuff to be kept secret. To that end: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I will offer a 10 BTC bounty to the first person who either: 1) Makes publicly available the source code and complete setup instructions for an FPGA-based Bitcoin mining device that can be created with off-the-shelf hardware. or 2) Offers an ASIC-based Bitcoin mining device for sale to the general Bitcoin community, and makes publicly available all schematics, source code, and other relevant information used to develop said device. Either of the above devices must cost no more than $0.60 USD per megahash per second that they provide, and must consume no more than 0.3 watts per megahash. Designs must not be encumbered by any sort of "intellectual property" restrictions, with the exception of GPL-style copyleft licenses. - -Chris Acheson, 5/17/11 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAEBCAAGBQJN0qr4AAoJEBgPDxtXUJkiGM8QAIO+uqNz2vte4lo+BXtbRLsD rxZAKWmnirlrl3+XxyewwFytmufi469qf+gcEvYURXVOfbzB2lT4/SZu3TWpWtuv 8jTeCSlM+AqCs5JJfX0yI86QqSVmCMa7V7cj/sU6Y1ad77JQEiNuoWhfYzUjeaQP naDhlZlw/dbrbWmVPN4NsKawXKqQ0RDOyZfG/y5uLJAvFM6JK3qZ9nWd4aFKkV1K mULv+PJ9vgzDElQKlNfvfQZ7ITYcNM+DER7Dn7p7TgTFlqOnIZz/SfG3c03yWfPB FixNZz0RzzCcCUv0wr086HiLEuC9FB0z3sDxQJvGGQ7LBl+LrlsqvTu+dQLdf5R4 c0HN3RPTm+VIyMv8P/mIiqx05Tfnn1wvdc9AD4L7xwuhlKemHEmMLPueMV82Ciol d7yusC/s+KCOTxkOS4twXDwCQNQi8noYaF+HE0w4mMu8I/NNqyCdi2qExCwO8oqz 6PUnfjKNS302lGHo3Gwh9KXdGSO6tLLX97uRil2i4rHyUz7z4zGBX+2Sla/b12CE Ucwv0u/Kt6mWLQaVd5HzEp8R5GIB/TgUnHl3Z/eh1j85TBpmbyNJnSUO8sG6M9IU uk2nwG8BtF2jDN+237kvNB1FZl7U1wZigahd75zfGe+TfjNIeHLtxEcdZNfCwBIv s8Ga7TYsYeA/+g6Ra75f =onT1 -----END PGP SIGNATURE----- It's not a whole lot, but hopefully others will join me.

334

Other / Politics & Society / Re: Justice Under Anarchy

on: May 15, 2011, 04:29:20 AM

Relevant: Quote Q. Without government cops, and government courts, and government prisons, who will stop unscrupulous criminals from robbing honest people blind? A. We will.

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