BV2 has a new home on blogger (google) as I just couldn't be bothered to run my own backups, email hosting etc etc anymore and the expense of hosting my own server was getting a bit excessive.
The blog has been renamed to ComputeCube as the idea is to merge the two seperate blogs into one, both links should point here.
The automated wordpress->blogger import tool did a good job but some of the image links have broken. I will be working on fixing these. Just to be clear my move to blogger has nothing to do with wordpress. I still think its a really good blogging system, just at the moment my needs are better served here.
Google now pretty much hosts everything of mine. Email, blog and google+ for the social networking thingies. In my push to move with the times I even have a twitter account now (ComputeCube) which contains personal, blog and GPU related stuff.
On the GPU front: I'm still running 2x 8800GT's and a Tesla C1060 but am considering getting a 560Ti as they seem to offer the best price/performance ratio and allow me to use the new CUDA features.
The server crash did knock the wind out of my blogging sails somewhat but since my last post I've not been idle and have implemented a lot of my ideas in CUDA, watch this space for more details.
Tuesday, 25 October 2011
Saturday, 24 July 2010
Server Crash
Unfortunately about 36hours ago the Hard Drive in my web server decided to end its little spinning life. Although the site has been restored from a couple of backups some of the file download links are not working.
The files are still available but I need to fix the download links - please be patient :)
For anyone running download monitor out there, the newer update changed the DB table names. Don't do what I did or rather didn't.... and forget to change the SQL backup scripts to reflect these changes.
The files are still available but I need to fix the download links - please be patient :)
For anyone running download monitor out there, the newer update changed the DB table names. Don't do what I did or rather didn't.... and forget to change the SQL backup scripts to reflect these changes.
Wednesday, 7 July 2010
PC Design Lab - new case
I just got an email update from PC Design Lab regarding their new case. Those of you who follow the blog will know my ComputeCube machine is built into their QMicro2 case, which has been really good with only one or two tiny niggles. Although in fairness they are caused by the the amount of power cables and the heat emitted by the Asus rampage 2 gene northbridge arrangement and the Tesla C1060.
The new case looks good and their have adopted the suggestions from their clients. You may have a look at the new pre-order case here. Even though they have raised the cage I would have liked it to be slightly taller to help with airflow over the GPU's and power cable routing. Strangely they mention it can now support 750w power supplies, but I have been running a 1250w one in the older case for a while now with no problems.
The radiator bracket is a really good idea and would have helped sort out the Rampage 2 Genes overheating northbridge rather nicely.
If you are looking for a SFF case in my opinion there is nothing better out there and this new model raises the bar even further. Now if I could only get my hands on the new one and a watercooling kit :)
The new case looks good and their have adopted the suggestions from their clients. You may have a look at the new pre-order case here. Even though they have raised the cage I would have liked it to be slightly taller to help with airflow over the GPU's and power cable routing. Strangely they mention it can now support 750w power supplies, but I have been running a 1250w one in the older case for a while now with no problems.
The radiator bracket is a really good idea and would have helped sort out the Rampage 2 Genes overheating northbridge rather nicely.
If you are looking for a SFF case in my opinion there is nothing better out there and this new model raises the bar even further. Now if I could only get my hands on the new one and a watercooling kit :)
Tuesday, 6 July 2010
Windows 7
While ordering a replacement power supply for one of my machines I decided to add a Windows 7 to the shopping cart.
This was in no small part prompted by the NVidia parallel nsight addin for visual studio which would not work on my XP machines. An additional contributing factor was the lack of SP3 for Windows XP Pro x64. Of course the new office 2010 will only run on XP SP3, Vista and Windows 7.
Having had a brief and scary encounter with Windows Vista I am pleasantly surprised with the new version of Windows. Microsoft have done a good job with this one.
The installation process had to be a "clean" one as there is no upgrade path from winXP x64. I took a full backup of my "ComputeCube" machine and without bothering to format the C drive just popped the DVD in and rebooted.
This was in no small part prompted by the NVidia parallel nsight addin for visual studio which would not work on my XP machines. An additional contributing factor was the lack of SP3 for Windows XP Pro x64. Of course the new office 2010 will only run on XP SP3, Vista and Windows 7.
Having had a brief and scary encounter with Windows Vista I am pleasantly surprised with the new version of Windows. Microsoft have done a good job with this one.
The installation process had to be a "clean" one as there is no upgrade path from winXP x64. I took a full backup of my "ComputeCube" machine and without bothering to format the C drive just popped the DVD in and rebooted.
Wednesday, 30 June 2010
Site Changes
Yes..... I sold out. There is now a google adwords space on the top right on the sidebar and at the bottom of individual posts. I went for what I think is the most unobtrusive design they offered.
Google have emailed me adwords related stuff for ages and I have resolutely resisted as this site is in no way a marketing site. However, in the last few months the site and related equipment failures (power supply, hard drive, mail server etc) have cost me quite a bit and hopefully this will help me recoup some of that.
Looking at what they seem to be placing as ads on the pages I have been starting to wonder how good their contextual advertising is... still it's early days.
In related site news the forums are now permanently removed, although there are still some links left over as I write this. With the amount of spam / hacking etc its just not worth maintaining a forum on a small site like this.
Google have emailed me adwords related stuff for ages and I have resolutely resisted as this site is in no way a marketing site. However, in the last few months the site and related equipment failures (power supply, hard drive, mail server etc) have cost me quite a bit and hopefully this will help me recoup some of that.
Looking at what they seem to be placing as ads on the pages I have been starting to wonder how good their contextual advertising is... still it's early days.
In related site news the forums are now permanently removed, although there are still some links left over as I write this. With the amount of spam / hacking etc its just not worth maintaining a forum on a small site like this.
Tuesday, 22 June 2010
Catch up
No apologies for the long delays between posts, or even checking the blog. It just has to fit in with life at the moment and there is so much going on!
Those of you who have left comments on the blog and emails for me should have got an answer last night or this morning. A bit of a delay for some of you. I do apologise for those of you who sent an email and haven't got a reply back. My computer that used to handle all my email died and I haven't had a chance to fix it yet. I think its just the power supply.... hopefully! so will get the emails back in a few weeks when I eventually get around to fixing it.
I've subsequently upgraded my email server - so any forthcoming mails will get to me.
In development work I've been working on my SPH simulations, and some GP stuff whenever I get a chance. GP stuff is traditionally recursive - well the equation trees anyway and have needed a substantial amount of reworking to get working efficiently on the GPU.
Speaking of recursive.... in order to be Turing Complete (assuming infinite memory for now) do you need to support / include recursion? Some posters on certain forums seem to think it is needed, but personally I can't see why? Most recursion with a bit of effort can be iterative - although possibly not very pretty or efficient.
For example. A GPU doesn't really support recursion*, but I would consider cuda / GPU combination as Turing complete. Admittedly not very efficient in certain cases - single thread for example. And again ignoring the infinite memory issue. *You can if you implement your own stack type system in global memory...
I'd be interested in knowing others views on this - email the normal place or comment here :)
To all the regular readers of the blog - anyone else being amazed by the absolute explosion of GPU / CUDA related code / products / hardware. Very exciting indeed!
Those of you who have left comments on the blog and emails for me should have got an answer last night or this morning. A bit of a delay for some of you. I do apologise for those of you who sent an email and haven't got a reply back. My computer that used to handle all my email died and I haven't had a chance to fix it yet. I think its just the power supply.... hopefully! so will get the emails back in a few weeks when I eventually get around to fixing it.
I've subsequently upgraded my email server - so any forthcoming mails will get to me.
In development work I've been working on my SPH simulations, and some GP stuff whenever I get a chance. GP stuff is traditionally recursive - well the equation trees anyway and have needed a substantial amount of reworking to get working efficiently on the GPU.
Speaking of recursive.... in order to be Turing Complete (assuming infinite memory for now) do you need to support / include recursion? Some posters on certain forums seem to think it is needed, but personally I can't see why? Most recursion with a bit of effort can be iterative - although possibly not very pretty or efficient.
For example. A GPU doesn't really support recursion*, but I would consider cuda / GPU combination as Turing complete. Admittedly not very efficient in certain cases - single thread for example. And again ignoring the infinite memory issue. *You can if you implement your own stack type system in global memory...
I'd be interested in knowing others views on this - email the normal place or comment here :)
To all the regular readers of the blog - anyone else being amazed by the absolute explosion of GPU / CUDA related code / products / hardware. Very exciting indeed!
Friday, 19 March 2010
SPH Screenshot
Finally the promised screenshot :)
It's not all that impressive to look at as I've restricted all the particles to 2d although it does use 3d calculations. I do this to help look for any issues in the code as I find it hard to spot errors in a 3d particle rendering.
This particular screenshot has 64000 particles that have been dropped into the box in a column formation and are now starting to slosh around at the bottom.
The unusual thing with regards to a CUDA implementation is that it is using symmetry in the interactions thereby decreasing the memory/processing load. I've still got more work to do but its showing a lot of promise in running superfast particle interaction simulations.
I've aso been doing a bit of work on my second version of my raytracer. I've once again stepped away from KD-trees and Octrees and am using a type of BVH, ray marching system. Screenshots once I have a decent scene rendered :)
In other news I'm now compiling all my new C++/CUDA code in 64bit with the CUDA 3.0 beta. Although I think putting in c++ object support into CUDA was a mistake the new version does produce decent code.
 |
| SPH with symmetry |
It's not all that impressive to look at as I've restricted all the particles to 2d although it does use 3d calculations. I do this to help look for any issues in the code as I find it hard to spot errors in a 3d particle rendering.
This particular screenshot has 64000 particles that have been dropped into the box in a column formation and are now starting to slosh around at the bottom.
The unusual thing with regards to a CUDA implementation is that it is using symmetry in the interactions thereby decreasing the memory/processing load. I've still got more work to do but its showing a lot of promise in running superfast particle interaction simulations.
I've aso been doing a bit of work on my second version of my raytracer. I've once again stepped away from KD-trees and Octrees and am using a type of BVH, ray marching system. Screenshots once I have a decent scene rendered :)
In other news I'm now compiling all my new C++/CUDA code in 64bit with the CUDA 3.0 beta. Although I think putting in c++ object support into CUDA was a mistake the new version does produce decent code.
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