Welcome to MilkyWay@home

Posts by Andrew Dicker

1) Message boards : News : N-Body (Message 59997)
Posted 26 Sep 2013 by Andrew Dicker
Post:
How about less "really cool science" ...


If you don't like "really cool science", don't crunch it.
2) Message boards : News : Badges for crunchers. (Message 59783)
Posted 2 Sep 2013 by Andrew Dicker
Post:
I like the lightyear landmark idea, especially how is isn't necessarily in just a boring 2^x or 10^x progression like most project's badges.

My astronomy degree slightly dislikes using Universe landmarks for MILKYWAY@home, but that's just a background niggle.
3) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59084)
Posted 24 Jun 2013 by Andrew Dicker
Post:
Yeah, the first link was "Validation inconclusive" when I posted it, but became valid later. 6dp sounds fine, the difference i noticed was much less significant.

I had a large number of tasks validate (~60) before removing my app_info and going back to standard apps. (note the computer may change ID, I seem to have to remove and re-attach the project and merge computers after fiddling with app_info)
4) Message boards : News : Separation Modified Fit Release (Message 59067)
Posted 23 Jun 2013 by Andrew Dicker
Post:
See
http://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=3276&postid=59036

There's an issue with OpenCL versions on Macs.
5) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59050)
Posted 23 Jun 2013 by Andrew Dicker
Post:
Seem to be reporting a minuscule difference in the result however:
http://milkyway.cs.rpi.edu/milkyway/workunit.php?wuid=387104484
6) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59048)
Posted 23 Jun 2013 by Andrew Dicker
Post:
Made those pointer changes, kernel compiles and appears to work:

http://milkyway.cs.rpi.edu/milkyway/result.php?resultid=507356160
7) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59036)
Posted 22 Jun 2013 by Andrew Dicker
Post:
google shows this for the error:
http://software.intel.com/en-us/forums/topic/280040
http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/constant.html

So i guess we need (lines 175-176 of probabilities_kernel.cl):
__constant SC* sc __attribute__((max_constant_size(NSTREAM * sizeof(SC)))),
__constant real* sg_dx __attribute__((max_constant_size(256 * sizeof(real)))),

I'll check this out soonish
8) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59032)
Posted 22 Jun 2013 by Andrew Dicker
Post:
I'm willing to fiddle around if you need some debugging info or anything.

Also, be aware that my machines are using pre-release OS, so it is entirely likely something is broken OS-side. For example, OpenCL 1.2 in the 680MX driver is very new.
9) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 59030)
Posted 22 Jun 2013 by Andrew Dicker
Post:
Cheers,
I noticed the new run, don't think i've gotten any GPU WUs yet to check how it runs though. Are the requirements the same as for the other (Win/Linux only) GPU apps? I have two machines, one with a 680MX, 2GB VRAM, and one 330M, 512MB. Should I keep an eye on them both, or only expect WU for the 680MX?

I'll report back when I get some on either.

EDIT:
I tell a lie, checking my task list from overnight results in seeing http://milkyway.cs.rpi.edu/milkyway/result.php?resultid=506354700 among others from the 680MX. A fail.
10) Message boards : Application Code Discussion : CUDA/OpenCL on Mac? (Message 58874)
Posted 15 Jun 2013 by Andrew Dicker
Post:
Hi all,
What chances are there of getting an OpenCL or CUDA milky way app for Mac?
I managed to compile a separation binary http://milkyway.cs.rpi.edu/milkyway/result.php?resultid=500657055 but got computation errors due to the OpenCL kernel not compiling (sorry, logs vanished, i forgot to save them before resetting the project when removing my app_info).

Regards, Andrew

(also: screensaver apps? i got nbody to compile for mac, but not separation)




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