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Posts by Kylinblue

1) Message boards : Number crunching : MT Nbody 1.62 workunit locked up (Message 65065)
Posted 23 Aug 2016 by Kylinblue
Similar problem with 3 tasks.

2) Message boards : Number crunching : AMD Radeon R9 Fury X - app_info.xml and apps - optimizations (Message 64942)
Posted 26 Jul 2016 by Kylinblue

I'm a bit disappointed that a project task last ~ 16 seconds with the Milkyway 1.36 ATI app on one FuryX VGA card (1 WU/GPU).
I looked to other PCs, e.g. hostid=590597 with 'R9 200 Series - Hawaii' VGA cards. This VGA card have just 44 ComputeUnits (CUs) A task last ~ 15 seconds.
The/my FuryX have 64 CUs. But a task last ~ 16 seconds.

Is there something wrong - possibilities to optimize/fine tune?


Take a look at memory speed and whether the R9 280 has 128bit, 256 bit or 384 bit thruput speeds, the faster the memory and the faster the bits get transferred at one time, the faster the card crunches. It's not JUST the CU's anymore.

Don't you know that Fury X beats R9 290x memory bandwidth by 1.6 (512gb/s vs 320)
3) Message boards : Number crunching : Any ETA on R9 series support? (Message 64389)
Posted 17 Mar 2016 by Kylinblue
Also, can anyone let me know how to setup to run anonymous platform?
4) Message boards : Number crunching : How to setup (Message 64374)
Posted 11 Mar 2016 by Kylinblue
Good suggestion, thanks
5) Message boards : Application Code Discussion : Questions on Nbody (Message 64371)
Posted 10 Mar 2016 by Kylinblue
Run time seems varies by a lot. I checked computation size and they were similar, but wall time varies too much, one can be finish in 10 minutes and the other took 10+ hours. Another thing I noticed is that when I run Nbody task, the handles in task manager skyrockets, right now it is at 1 million...

6) Message boards : Number crunching : How to setup (Message 64369)
Posted 10 Mar 2016 by Kylinblue
Also I have noticed that Nbody creates a massive number of "Handles" in Windows, observed in task manager. Some task may finish in an hour, one I have encountered took my CPU 8 hours+ and over a million of handles. What is that?
7) Message boards : Number crunching : How to setup (Message 64368)
Posted 10 Mar 2016 by Kylinblue
I have made an assumption that N-body is an application that runs better on CPU, since there is no GPU version available yet. So I would like to run Nbody only on my CPU, but leave all the modfit to my two GPUs, how should I config? I have 6 threads on my CPU and two GPUs.

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