Can the 7800 series run MW@H?

otherwise should i stick with 5850 and 6950?

Can the 7800 series run MW@H?

otherwise should i stick with 5850 and 6950?

Yes they can, but they only have 1/16th double precision as opposed to 1/4 for the 79xx.

My 7750 takes 10 minutes per, so I would guess around 5 minutes per for the 7850.

My 4830 takes 3:45 and my 5830 took 2:15.

---

What about some of the 4 and 5 series nvidia cards?

how do they compare time wise?

I think my 560 was around 8 minutes and the 460 was at 10.

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My 7750 takes 10 minutes per, so I would guess around 5 minutes per for the 7850.

And I thought my old HD3850 would be slow... but apparently with less than 7 minutes per WU it's faster than a current 100€-GPU... at least for Milkyway crunching.

---

My HD 7950 takes 41 seconds per task without an app_info.xml. Can't find a sample app_info.xml though, would love to stop the droops in utilization between completed and starting tasks.

You can use this app_info.xml to run two tasks parallel. Kick them out of phase and you will have lesser utilization-drops.

<app_info>
<app>
<name>milkyway</name>
</app>
<file_info>
  <name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</name>
  <executable/>
</file_info>
<app_version>
  <app_name>milkyway</app_name>
  <version_num>102</version_num>
    <flops>1.0e13</flops>
    <avg_ncpus>0.05</avg_ncpus>
    <max_ncpus>1</max_ncpus>
    <plan_class>opencl_amd</plan_class>
    <coproc>
      <type>ATI</type>
      <count>0.5</count>
    </coproc>
    <cmdline></cmdline>
  <file_ref>
   <file_name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</file_name>
   <main_program/>
  </file_ref>
</app_version>
</app_info>

Cheers

Nowi

---

Thank you [boinc.at] Nowi,
I have been looking for an app_info formated correctly for Milkyway.
You are right about putting them out of phase. I paused the second
one till about 40% thru the first one and now they don't both try to use
the CPU at the same time. Sweet !
We had been using Boinc manager to reserve a CPU core but for some reason
using the app_info and putting the CPU setting in Boinc back to 100% seems
to better the run time. Was 43 sec. running 1 , and now it is 76 sec. running 2.
76/2 = 38 sec. each.
Should increase our RAC a good bit.
Now if we could only afford a second 7970 we could really pump up the RAC... ;-)

My 7750 takes 10 minutes per, so I would guess around 5 minutes per for the 7850.

And I thought my old HD3850 would be slow... but apparently with less than 7 minutes per WU it's faster than a current 100€-GPU... at least for Milkyway crunching.

Lol i was thinking the same right now ^^

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DSKAG Austria Research Team: http://www.research.dskag.at

You can compare the theoretical douple precision performance here in Wikipedia:
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units

GPU SP DP
3870 496 99.2
4770 960 192
7750 819 51.2
7870 2560 180

a 4770 gets about 70k a day. i won't expect much more from a 7870. I guess 2.5 to 3 min for a WU on the 7870.

Tomast, is you 7970 a standard card 925 core and 1375 mem or a overclocked card? It could also be a "2 cards in one box" problem. With 2 cards i need 45 to 47 sec for a WU.

Thank you very much [boinc.at] Nowi for the app_info.xml file :)

PS: I had the oportunity to test MW on a Tesla (GTX 480 version of Tesla) a WU took 4 min there. That was roughly a year ago. Does anyone knows how long a WU on a normal GTX 480 runs? The Tesla cards should have 1/2 DP of the SP power.

Sebastian* ,
It is 950 MHz GPU clock and 1425 MHz Mem clock. (Factory Overclocked)

I am running 2 ati 6950 cards+they take 1:08 each to run.I would like to try running 2 wu's per gpu.I tried to use the app_info file from the above post,but I keep getting that boinc cannot find any compatible files+it aborts all the other wu's.I am using boinc 7.0.25 with windows xp 32 bit.What am I doing wrong?Thanks,Kurt

I am running 2 ati 6950 cards+they take 1:08 each to run.I would like to try running 2 wu's per gpu.I tried to use the app_info file from the above post,but I keep getting that boinc cannot find any compatible files+it aborts all the other wu's.I am using boinc 7.0.25 with windows xp 32 bit.What am I doing wrong?Thanks,Kurt

This one works for me:

<app_info>
<app>
<name>milkyway</name>
</app>
<file_info>
<name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>milkyway</app_name>
<version_num>102</version_num>
<flops>1.0e11</flops>
<avg_ncpus>0.05</avg_ncpus>
<max_ncpus>1</max_ncpus>
<plan_class>ati14ati</plan_class>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<cmdline>--gpu-target-frequency 10 --gpu-disable-checkpointing</cmdline>
<file_ref>
<file_name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</file_name>
<main_program/>
</file_ref>
</app_version>
</app_info>

[edit] Oops. Didn't notice you're using 32 bit [/edit]

I can confirm that running a 7850 at 900MHz completes the workunit in 5 minutes.

If you want to have only MT WU's use your CPU and have the separations only crunch on your GPU's since it's way faster, the following is the app_info that I made and that I use. I can now crunch 3 WU's of the multi-threaded work units(4 cores per unit) and 4 of the GPU work units (2 units per card).
I'm on 2x 7970's and I can pump out 4 GPU work units in total every 77 seconds.

As per http://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=2841

<app_info>
<app>
<name>milkyway</name>
</app>
<file_info>
<name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>milkyway</app_name>
<version_num>102</version_num>
<flops>1.0e11</flops>
<avg_ncpus>0.05</avg_ncpus>
<max_ncpus>1</max_ncpus>
<plan_class>ati14ati</plan_class>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<cmdline>--gpu-target-frequency 10 --gpu-disable-checkpointing</cmdline>
<file_ref>
<file_name>milkyway_separation_1.02_windows_x86_64__opencl_amd_ati.exe</file_name>
<main_program/>
</file_ref>
</app_version>
<app>
<name>milkyway_nbody</name>
<user_friendly_name>MilkyWay@Home nbody Simulation</user_friendly_name>
</app>
<file_info>
<name>milkyway_nbody_0.84_windows_x86_64__mt.exe</name>
<executable/>
</file_info>
<file_info>
<name>libgomp_64-1.dll</name>
<executable/>
</file_info>
<file_info>
<name>pthreadGC2_64.dll</name>
<executable/>
</file_info>
<app_version>
<app_name>milkyway_nbody</app_name>
<version_num>84</version_num>
<plan_class>mt</plan_class>
<avg_ncpus>4</avg_ncpus>
<max_ncpus>4</max_ncpus>
<cmdline>--nthreads=4</cmdline>
<file_ref>
<file_name>milkyway_nbody_0.84_windows_x86_64__mt.exe</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>libgomp_64-1.dll</file_name>
</file_ref>
<file_ref>
<file_name>pthreadGC2_64.dll</file_name>
</file_ref>
</app_version>
</app_info>

HI!

Have recently installed a HD 7850 in my system. Just wondering if it's natural for MW@Home 1.02 WU completion time to vary much, as fastest so far has been 5m04s and slowest 8m15s? Previous card (HD 5850 OC (765/4500)) completed every WU in 1m23s which was also the estimated time to completion.

With the HD 7850 the estimated completion time is consistently 3m01s.

Thanks in advance.