I´m now stable @ 4.6 GHz with 1.34 V and temperatures in the high 60s. Today I have changed the memory frequency from 1600 (9-9-9-24 1T) to 1866 (9-9-9-24 1T) and the run time for gravity wave jobs went down to 12,800 from 13,400.
I haven´t expected that. My Q6600 didn´t care about FSB (9x400 == 8x450).
Ubuntu 10.10 does not yet support the new integrated graphics. I knew this going in, but I thought support would be there in version 11.04. But according to tests on phoronix (a great website to check on all things linux) even support in 11.04 looks unlikely.
I wanted to see how little power I could use with integrated graphics. But the recent release of the BRP CUDA app looks like it might be a very efficient way to go. But hardware failures on the nvida GPU, have delayed that test.
I've read, but not measured myself, that the ATI 4670 draws 11 watts at idle.
Agree that the power supply is to big. I would like to replace it with a seasonic 400 watt 80+ Gold PSU, but even that size is a bit to long for my small case. But before I try to squeeze something else in I want to measure power use with a nvidia GPU and the CUDA BRP application.
With Win 7 SP1 just released we could start to use AVX. Devs.. any word on this?
So far AVX has shown impressive speed gains in synthetic benchmarks (80% to 90% gain), but doesn't have much real world usage yet. At Einstein you could probably use it on 256 bit vectors anywhere where you're now using SSE2 128 bit vectors. Another code path.. but should be worth a little recompile ;)
We're using gcc (various versions) to build our Apps. AFAIK AVX support for gcc is still under development. When available, we might give it a shot on Linux with the BRP App. It will surely take much longer for a reliable gcc for Windows that supports AVX to become available. Time-critical parts of the GW App are hardcoded in x86 asm (SSE+SSE2), I don't believe there will be any additional benefit from AVX that would be worth the effort to change the build process.
I´m now stable @ 4.6 GHz
)
I´m now stable @ 4.6 GHz with 1.34 V and temperatures in the high 60s. Today I have changed the memory frequency from 1600 (9-9-9-24 1T) to 1866 (9-9-9-24 1T) and the run time for gravity wave jobs went down to 12,800 from 13,400.
I haven´t expected that. My Q6600 didn´t care about FSB (9x400 == 8x450).
@archae86 Ubuntu 10.10
)
@archae86
Ubuntu 10.10 does not yet support the new integrated graphics. I knew this going in, but I thought support would be there in version 11.04. But according to tests on phoronix (a great website to check on all things linux) even support in 11.04 looks unlikely.
I wanted to see how little power I could use with integrated graphics. But the recent release of the BRP CUDA app looks like it might be a very efficient way to go. But hardware failures on the nvida GPU, have delayed that test.
I've read, but not measured myself, that the ATI 4670 draws 11 watts at idle.
Agree that the power supply is to big. I would like to replace it with a seasonic 400 watt 80+ Gold PSU, but even that size is a bit to long for my small case. But before I try to squeeze something else in I want to measure power use with a nvidia GPU and the CUDA BRP application.
Just a heads up for everybody
)
Just a heads up for everybody using Sandy Bridge:
http://www.anandtech.com/show/4142/intel-discovers-bug-in-6series-chipset-begins-recall
It seems that the 4 SATA2 ports are affected. The 2 SATA3 should be fine.
With Win 7 SP1 just released
)
With Win 7 SP1 just released we could start to use AVX. Devs.. any word on this?
So far AVX has shown impressive speed gains in synthetic benchmarks (80% to 90% gain), but doesn't have much real world usage yet. At Einstein you could probably use it on 256 bit vectors anywhere where you're now using SSE2 128 bit vectors. Another code path.. but should be worth a little recompile ;)
MrS
Scanning for our furry friends since Jan 2002
We're using gcc (various
)
We're using gcc (various versions) to build our Apps. AFAIK AVX support for gcc is still under development. When available, we might give it a shot on Linux with the BRP App. It will surely take much longer for a reliable gcc for Windows that supports AVX to become available. Time-critical parts of the GW App are hardcoded in x86 asm (SSE+SSE2), I don't believe there will be any additional benefit from AVX that would be worth the effort to change the build process.
BM
BM
I guess I'm a bit spoiled by
)
I guess I'm a bit spoiled by using Matlab myself - it hides most of the nasty stuff from me. But thanks for answering anyway!
MrS
Scanning for our furry friends since Jan 2002