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1  Economy / Marketplace / For Sale : VisionTek ATI Radeon HD 3870 OC Graphics Card on: July 15, 2010, 02:32:09 AM
Slightly used, in good condition.
Looking for 2000 900 BTC OBO, thanks!

http://www.compusa.com/applications/searchtools/item-details.asp?EdpNo=4398715&csid=ITD&body=MAIN#detailspecs

Quote
 Lifestyle:    Performance
  Chipset:    ATI Radeon
  GPU Series:    ATI Radeon HD 3000
  GPU/VPU:    RADEON HD 3870
  Additional Features:    HDCP Enabled
    Game Physics Capable
    ATI Avivo HD Technology
  Video Memory:    512MB
  Memory Type:    GDDR4
  Memory Interface:    256-bit
  Stream Processors:    320
  Core Clock:    800 MHz
  Interface Type:    PCI Express 2.0
  Interface Speed:    x16
  Connector(s):    HDTV
    Dual DVI (Dual Link)
    VGA (w/DVI to VGA Adapter)
    HDMI (w/ Adapter)
  Multi-GPU Support:    CrossFire-X
  Overclocked:    Yes
  APIs:    DirectX 10.1
  1080p Support:    Yes
  Video Output:    DVI
    S-Video
  Low Profile:    No
  Cooling Type:    Fan
    Heatsink


2  Bitcoin / Bitcoin Technical Support / UPDATED - Linux x64 bins for those having libcrypto and GLIBCXX_3.4.11 troubles on: July 13, 2010, 06:32:44 PM
This is mostly for those having troubles on fedora with newer openssl than the binaries on the front page of the site were built with.

Please try these or compile yourself using these instructions: http://heliacal.net/~solar/bitcoin/bitcoin-linuxbuild.pdf


http://heliacal.net/~solar/bitcoin/builds/Linux-amd64-SVN-102/

3  Economy / Marketplace / Wanted: Canon camera equipment on: June 15, 2010, 01:33:31 AM
I would be willing to pay a combination of bitcoins and USD for used Canon compatible photo equipment.. lenses and filters and such.  If anyone is looking to sell this kind of stuff let me know.

Thanks,
Laszlo
4  Economy / Marketplace / Pizza for bitcoins? on: May 18, 2010, 12:35:20 AM
I'll pay 10,000 bitcoins for a couple of pizzas.. like maybe 2 large ones so I have some left over for the next day.  I like having left over pizza to nibble on later.  You can make the pizza yourself and bring it to my house or order it for me from a delivery place, but what I'm aiming for is getting food delivered in exchange for bitcoins where I don't have to order or prepare it myself, kind of like ordering a 'breakfast platter' at a hotel or something, they just bring you something to eat and you're happy!

I like things like onions, peppers, sausage, mushrooms, tomatoes, pepperoni, etc.. just standard stuff no weird fish topping or anything like that.  I also like regular cheese pizzas which may be cheaper to prepare or otherwise acquire.

If you're interested please let me know and we can work out a deal.

Thanks,
Laszlo
5  Bitcoin / Development & Technical Discussion / Generating Bitcoins with your video card (OpenCL/CUDA) on: May 10, 2010, 02:03:57 PM
I have a working prototype of Bitcoin generation with OpenCL.  OpenCL is similar to OpenGL but it's for doing computation, not graphics.  Other similar technologies are CUDA (NVIDIA) and DirectCompute (Microsoft).  OpenCL is Apple's version of it but it is available for Linux and Windows as well.

I posted a Mac OS X binary package in my other thread.  I will create a patch and write up instructions for each platform this week as I have time but I wanted to find out who if anyone is interested in this even.

Please reply if you're interested and what OS/Video card you have.

Supported video cards:
NVIDIA: http://www.nvidia.com/object/cuda_gpus.html
AMD (ATI): http://developer.amd.com/gpu/ATIStreamSDK/Pages/default.aspx#two

Just to give people an idea of the benefit..
In my development computer I have an Intel E8600 CPU which runs at 3.3ghz normally.. I have it clocked at 4.1ghz
With 2 threads running the normal way I get about 1800k iterations per second in the bitcoin miner.
With an NVIDIA 8800 GTS (G80 GPU) video card I get around 3300-3800k iterations per second (varies with tuning of the code).

I find the best total performance comes from running one CPU thread and one OpenCL thread for the GPU (which does a bunch of work in parallel).  I get about 5000k/sec total that way on my development machine.  If I use 2 CPU threads it slows down the overall results to about 3600k/sec because the CPU is tied up computing and not pumping data to the GPU fast enough.

6  Bitcoin / Development & Technical Discussion / Mac OS X full build instructions and updated binary package on: May 02, 2010, 03:51:07 AM
It took a little while to figure this out.. I have created a document and a little patch file to make it painless to build this on Mac OS.  Intel only, PPC doesn't work right now unless someone wants to make a patch for it.  The daemon mode isn't working yet, I will take a look at that eventually, but others are welcome to help out with a patch too Smiley

Instructions and files are all here http://heliacal.net/~solar/bitcoin/mac-build/

Here is an updated binary with the menus and stuff fixed to work like other Mac apps..

http://heliacal.net/~solar/bitcoin/Bitcoin-MacOSX-intel-svn-75-20100501.dmg

Your wallet and debug.log and such are stored in ~/Library/Application Support/Bitcoin so back this up regularly.

Currently I'm working on adding OpenCL support to increase the yield so expect to see more updates soon.

Thanks for checking it out, let me know how it works out for you!
7  Bitcoin / Development & Technical Discussion / Mac OS X universal build for testing on: April 19, 2010, 11:21:55 AM
Screen shot:


Disk image: http://heliacal.net/~solar/bitcoin/Bitcoin-MacOSX-universal-svn-75-20100419.dmg

Installation: Run directly from disk image or drag to Applications folder

I have not tested ppc so it probably doesn't work.  I got it to run on 10.5 and 10.6 64-bit Intel though.

This is based on svn but the daemon/commandline mode isn't working yet, only the GUI.

Please post any problems.  If it crashes I'll try to help but screen shots, logs or crash dumps might be needed to figure it out.

Thanks
Laszlo
8  Bitcoin / Bitcoin Discussion / Saying hello, and have a few questions on: April 14, 2010, 04:57:22 PM
Hi all, I'm a new Bitcoin user and I'm starting to generate some of my own coins.  I have a few friends who are also using it now.

I am a programmer by trade and have a fair amount of experience with different platforms like linux, Mac OS, iPhone, etc.

I am interested in running Bitcoin on other platforms like iPhone and I'm wondering if there is any interest in this or if anyone has a problem with this.  I'm also wondering if someone has already done this so I don't waste my time.  Thanks!

My Bitcoin address is 1XPTgDRhN8RFnzniWCddobD9iKZatrvH4

-Laszlo
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