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Ask Slashdot: GPU of Choice For OpenCL On Linux?

Bram Stolk Re:What do you need the 3D for? (106 comments)

Submitter here:
I don't need 3D as in the sense of rasterizing triangles in 3D space.
I need the GPU to do General Purpose computing, as clearly stated in the summary.

In my case: I need to do a massive amount of intersection tests between rays and AABBs.

2 days ago

Jaguar and Land Rover Just Created Transparent Pillars For Cars

Bram Stolk Waste (191 comments)

Such a waste of money.
This will not make it onto the roads: overly complex.

The money would be better spent on actual transparent material.
If we could manufacture a material as transparent as glass or plastic, with similar properties as steel, they would make excellent pillars.

about a month and a half ago

The Physics of Why Cold Fusion Isn't Real

Bram Stolk Re:Wrong (350 comments)

Maybe you should read the summary again. I did not bring up 'the sun', the summary did, claiming only the sun can do net positive fusion.

about 3 months ago

The Physics of Why Cold Fusion Isn't Real

Bram Stolk Wrong (350 comments)

Only the sun you say?
A hydrogen bomb yields more energy than was put it, by a large margin.

We can do fusion, we just cannot control it yet.

about 3 months ago

Dropbox Caught Between Warring Giants Amazon and Google

Bram Stolk No linux client from google (275 comments)

It is dropbox for me:
There is no linux client for Google Drive.
I think years ago it was supposed to be 'soon'.

about 5 months ago

60,000 Oculus Rift DK2 Orders, 20,000+ Units Shipped, New Orders Ship In October

Bram Stolk A lot of devs (67 comments)

Wow... That is a LOT of devs.
So we got 60k games coming to the platform.

I got a dk2 as well, and yes: I am a dev.

about 5 months ago

Apple's 2014 WWDC Keynote Will Be Streamed Live; Hopes For a Microconsole?

Bram Stolk Article seems ignorant of current state (147 comments)

I think the article screwed up here.
From the article:

"Party Play allows four friends to connect via BlueTooth controllers to an iPad, enabling local splitscreen multiplayer. Take your iPad out to your flatscreen TV with a HDMI adaptor and bingo, the Apple microconsole has arrived."

So the iPad is the microconsole, and you can ALREADY DO THIS.

The iPad can mirror anything to a TV using HDMI, and the iPad can already do MFi controllers, so there is NOTHING NEW HERE.

about 8 months ago

Joss Whedon Releases New Film On Demand

Bram Stolk Rent vs own (137 comments)

I do not like renting, I prefer to own.
Just put it up on AppleTV so it conveniently becomes part of my iTunes lib.
Also I don't have patience for sloppy flash based players.

about 9 months ago

Heartbleed Coder: Bug In OpenSSL Was an Honest Mistake

Bram Stolk Re:Bigger problem: stupid 'optimizations' (447 comments)

I bet it is.
Where are the numbers from the profile runs?
Could have left it in the code comments, or somewhere on a mailing list.

about 10 months ago

Heartbleed Coder: Bug In OpenSSL Was an Honest Mistake

Bram Stolk Re:Bigger problem: stupid 'optimizations' (447 comments)

OpenSSL has a functionality: to provide high security. If it fails to do that, it loses all reason to exist, regardless of how efficient the code is.
Also: allocation does not tend to show up in profiling.
Last, note that allocation was deemed slow on SOME PLATFORMS.
Way to go: completely compromise the security on all platforms because you think that on some platforms allocation is slow.

about 10 months ago

Ask Slashdot: Linux For Grandma?

Bram Stolk iPad (287 comments)

Please, give her an iPad.
Less problems for you, less problems for Grandma.

Zero maintenance, easy to use.
This is no contest.

about a year ago

PC Game Prices — Valve Starts the Race To Zero

Bram Stolk Re: It's not free (212 comments)

Hrs of development does not scale linearly with hrs of play.

A game with double the content will typically take marginaly more dev time to create.

about a year ago

Bugatti 100P Rebuilt: The Plane That Could've Turned the Battle of Britain

Bram Stolk counter rotating (353 comments)

If the two engines rev at different speeds, the whole plane will start to roll, faster and faster.
Consider this scenario:
Engine 1 stalls.
Engine 2 has its throttle stuck at wide open (Aircraft engines do this e.g. when linkage breaks: full throttle is safer than no throttle.)
Then the pilot will die a horrible death EVEN BEFORE HITTING THE GOUND.

You can do this with electric engines, not with IC engines.
It's a death trap, and it will not fly.

about a year ago

Ask Slashdot: Do You Still Trust Bitcoin?

Bram Stolk Logarithms! (631 comments)

Guess what... bitcoin price is arguably still trending up.
All you have to do is look at the logarithmic graph.
And frankly, logarithmic is the only way to view it, considering the exponential price movement.
Here's the data: http://bitcoincharts.com/chart...

about a year ago

NVIDIA Tegra Note 7 Tested, Fastest Android 4.3 Slate Under $200

Bram Stolk benchmark (107 comments)

It does well for on-screen benchmarks, because of the low resolution of 1280x720.
For on-screen tests, it will have to process fewer pixels than the more expensive models with high-res screens.
This makes it look faster than it is, as you can see by the off-screen benchmark results.

1 year,26 days

Kernel DBus Now Boots With Systemd On Fedora

Bram Stolk Re:Listen to A.S.T. (341 comments)

That word does not mean what you think it means. In fact, kernel dbus is probably the most microkernel-ish feature I've seen added to the Linux kernel (although I haven't been paying close attention).

From wikipedia:
Traditional operating system functions, such as device drivers, protocol stacks and file systems, are removed from the microkernel to run in user space.

1 year,29 days

Kernel DBus Now Boots With Systemd On Fedora

Bram Stolk Listen to A.S.T. (341 comments)

Andrew S. Tanenbaum had a point about Linux not being micro kernel.
This is getting crazy: moving perfectly fine userland systems to the kernel.
Isn't the kernel large enough already?

1 year,29 days

60% of Americans Unaware of Looming Incandescent Bulb Phase Out

Bram Stolk Sometimes you need inefficiency (944 comments)

My previous apartment had a bathroom without conventional heating.
You could still make the bathroom warm enough with the lights above the mirror though.
Six bulbs of 60W gave me a nice and cosy 360W heating, which is actually not that bad in a small bathroom.
If you remember to turn on lights an hour before your shower (in the winter), you would be fine.

My new place has heated floors in the bathroom, so I no longer care.
But for some people, 60W bulbs are nice.

about a year ago



Ask Slashdot: GPU of choice for OpenCL on Linux?

Bram Stolk Bram Stolk writes  |  5 days ago

Bram Stolk (24781) writes "So, I am running GNU/Linux on a modern Haswell CPU, with an old Radeon HD5xxx from 2009. I'm pretty happy with the open source Gallium driver for 3D acceleration.

But now I want to do some GPGPU development using OpenCL on this box, and the old GPU will no longer cut it. What do my fellow technophiles from slashdot recommend as a replacement GPU? Go nVidia, go AMD, or just use the integrated Intel GPU instead? Bonus points for open sourced solutions. Performance not really important, but OpenCL driver maturity is."

The geography factor in freemium conversions

Bram Stolk Bram Stolk writes  |  more than 3 years ago

Bram Stolk (24781) writes "Infographic on the the geography factor in freemium conversions.

Or: why Kiwi customers rock.

Sales and download data from Apple's app store can be valuable source to distill insight from. In this example: in which countries are customers more likely to transition from free to paying users?"

Link to Original Source

Bram Stolk Bram Stolk writes  |  more than 7 years ago

Bram Stolk writes "I've written a pong game for the PS/3. But this is pong with a twist (of the wrist). You control your paddle with a Wiimote. Running Linux on your PS/3 enables you to interface with any bluetooth device, such as Nintendo's Wiimote. The source of Wiipong/3 is available."


Bram Stolk has no journal entries.

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