Forum > GPU crunching
x38g reports
perryjay:
Okay, switched off and back to three for me too. Be interesting to see if I can hold up at this rate.
So much for that idea. Noticed my internet slowing then heard my fans slowing down. Checked SETI and saw the to completion time rising instead of falling. Checked EVGA Precision and saw my temp and fan speed was down but it did not downclock. I went ahead and shut down the SETI Client and BM, switched back to two at a time and things are running smoothly again. This poor little GTS 450 1GB just can't handle three at a time.
One more little note, I did not shut down Firefox. I just made my changes to SETI and started it back up. Firefox is running better now too.
Jason G:
--- Quote from: perryjay on 28 Jun 2011, 02:47:56 pm ---This poor little GTS 450 1GB just can't handle three at a time....
--- End quote ---
Oh! The penny has dropped. I've seen a VRAM utilisation blowout here & 3 tasks seems to be using way too much. Over 1.4GiG VRAM used :o ::) That was unintentional & likely you'll be able to go back to 3 once I figure out what has happened there (& fix it). No way should we be using that much per task, and indeed a 1 Gig card won't accomodate 3 strangely greedy instances.
perryjay:
While it ran, it ran good. I was only losing about a minute and a half over two at a time by running three. That's running shorties, I'm in the middle of the shorty storm right now. It would really be great if you find the problem and get us going again.
Jason G:
--- Quote from: perryjay on 28 Jun 2011, 04:33:40 pm ---While it ran, it ran good. I was only losing about a minute and a half over two at a time by running three. That's running shorties, I'm in the middle of the shorty storm right now. It would really be great if you find the problem and get us going again.
--- End quote ---
Oh I'll find it alright :D There's some V7 issues to resolve as well, but I am a stickler for trying to shrink memory footprints, simply because I prefer computation over RAM. RAM's Slow ;) The chances of this weird build running on 256MiB cards is currently zero ;D
Ghost0210:
Here's what happened when I tried to run 3 at a time
--- Quote ---setiathome_CUDA: Found 1 CUDA device(s):
Device 1: GeForce GTX 465, 993 MiB, regsPerBlock 32768
computeCap 2.0, multiProcs 11
clockRate = 1500000
In cudaAcc_initializeDevice(): Boinc passed DevPref 1
setiathome_CUDA: CUDA Device 1 specified, checking...
Device 1: GeForce GTX 465 is okay
SETI@home using CUDA accelerated device GeForce GTX 465
Priority of process raised successfully
Priority of worker thread raised successfully
Cuda Active: Plenty of total Global VRAM (>300MiB).
All early cuFft plans postponed, to parallel with first chirp.
) _ _ _)_ o _ _
(__ (_( ) ) (_( (_ ( (_ (
not bad for a human... _)
Multibeam x39d Preview, Cuda 3.20
Legacy setiathome_enhanced V6 mode.
Work Unit Info:
...............
WU true angle range is : 2.589599
VRAM: cudaMalloc((void**) &dev_cx_DataArray, 1048576x 8bytes = 8388608bytes, offs256=0, rtotal= 8388608bytes
VRAM: cudaMalloc((void**) &dev_cx_ChirpDataArray, 1179648x 8bytes = 9437184bytes, offs256=0, rtotal= 17825792bytes
VRAM: cudaMalloc((void**) &dev_flag, 1x 8bytes = 8bytes, offs256=0, rtotal= 17825800bytes
VRAM: cudaMalloc((void**) &dev_WorkData, 1179648x 8bytes = 9437184bytes, offs256=0, rtotal= 27262984bytes
VRAM: cudaMalloc((void**) &dev_PowerSpectrum, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 31457288bytes
VRAM: cudaMalloc((void**) &dev_t_PowerSpectrum, 1048584x 4bytes = 1048608bytes, offs256=0, rtotal= 32505896bytes
VRAM: cudaMalloc((void**) &dev_GaussFitResults, 1048576x 16bytes = 16777216bytes, offs256=0, rtotal= 49283112bytes
VRAM: cudaMalloc((void**) &dev_PoT, 1572864x 4bytes = 6291456bytes, offs256=0, rtotal= 55574568bytes
VRAM: cudaMalloc((void**) &dev_PoTPrefixSum, 1572864x 4bytes = 6291456bytes, offs256=0, rtotal= 61866024bytes
VRAM: cudaMalloc((void**) &dev_NormMaxPower, 16384x 4bytes = 65536bytes, offs256=0, rtotal= 61931560bytes
VRAM: cudaMalloc((void**) &dev_flagged, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 66125864bytes
VRAM: cudaMalloc((void**) &dev_outputposition, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 70320168bytes
VRAM: cudaMalloc((void**) &dev_PowerSpectrumSumMax, 262144x 12bytes = 3145728bytes, offs256=0, rtotal= 73465896bytes
VRAM: cudaMallocArray( &dev_gauss_dof_lcgf_cache, 1x 8192bytes = 8192bytes, offs256=176, rtotal= 73474088bytes
VRAM: cudaMallocArray( &dev_null_dof_lcgf_cache, 1x 8192bytes = 8192bytes, offs256=72, rtotal= 73482280bytes
VRAM: cudaMalloc((void**) &dev_find_pulse_flag, 1x 8bytes = 8bytes, offs256=0, rtotal= 73482288bytes
VRAM: cudaMalloc((void**) &dev_t_funct_cache, 1966081x 4bytes = 7864324bytes, offs256=0, rtotal= 81346612bytes
Thread call stack limit is: 1k
CudaThreadSetLimit() returned code
Unhandled Exception Detected...
- Unhandled Exception Record -
Reason: Access Violation (0xc0000005) at address 0x00529977 read attempt to address 0x00000002
Engaging BOINC Windows Runtime Debugger...
setiathome_CUDA: Found 1 CUDA device(s):
Device 1: GeForce GTX 465, 993 MiB, regsPerBlock 32768
computeCap 2.0, multiProcs 11
clockRate = 1500000
In cudaAcc_initializeDevice(): Boinc passed DevPref 1
setiathome_CUDA: CUDA Device 1 specified, checking...
Device 1: GeForce GTX 465 is okay
SETI@home using CUDA accelerated device GeForce GTX 465
Priority of process raised successfully
Priority of worker thread raised successfully
Cuda Active: Plenty of total Global VRAM (>300MiB).
All early cuFft plans postponed, to parallel with first chirp.
) _ _ _)_ o _ _
(__ (_( ) ) (_( (_ ( (_ (
not bad for a human... _)
Multibeam x39d Preview, Cuda 3.20
Legacy setiathome_enhanced V6 mode.
Work Unit Info:
...............
WU true angle range is : 2.589599
VRAM: cudaMalloc((void**) &dev_cx_DataArray, 1048576x 8bytes = 8388608bytes, offs256=0, rtotal= 8388608bytes
VRAM: cudaMalloc((void**) &dev_cx_ChirpDataArray, 1179648x 8bytes = 9437184bytes, offs256=0, rtotal= 17825792bytes
VRAM: cudaMalloc((void**) &dev_flag, 1x 8bytes = 8bytes, offs256=0, rtotal= 17825800bytes
VRAM: cudaMalloc((void**) &dev_WorkData, 1179648x 8bytes = 9437184bytes, offs256=0, rtotal= 27262984bytes
VRAM: cudaMalloc((void**) &dev_PowerSpectrum, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 31457288bytes
VRAM: cudaMalloc((void**) &dev_t_PowerSpectrum, 1048584x 4bytes = 1048608bytes, offs256=0, rtotal= 32505896bytes
VRAM: cudaMalloc((void**) &dev_GaussFitResults, 1048576x 16bytes = 16777216bytes, offs256=0, rtotal= 49283112bytes
VRAM: cudaMalloc((void**) &dev_PoT, 1572864x 4bytes = 6291456bytes, offs256=0, rtotal= 55574568bytes
VRAM: cudaMalloc((void**) &dev_PoTPrefixSum, 1572864x 4bytes = 6291456bytes, offs256=0, rtotal= 61866024bytes
VRAM: cudaMalloc((void**) &dev_NormMaxPower, 16384x 4bytes = 65536bytes, offs256=0, rtotal= 61931560bytes
VRAM: cudaMalloc((void**) &dev_flagged, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 66125864bytes
VRAM: cudaMalloc((void**) &dev_outputposition, 1048576x 4bytes = 4194304bytes, offs256=0, rtotal= 70320168bytes
VRAM: cudaMalloc((void**) &dev_PowerSpectrumSumMax, 262144x 12bytes = 3145728bytes, offs256=0, rtotal= 73465896bytes
VRAM: cudaMallocArray( &dev_gauss_dof_lcgf_cache, 1x 8192bytes = 8192bytes, offs256=176, rtotal= 73474088bytes
VRAM: cudaMallocArray( &dev_null_dof_lcgf_cache, 1x 8192bytes = 8192bytes, offs256=72, rtotal= 73482280bytes
VRAM: cudaMalloc((void**) &dev_find_pulse_flag, 1x 8bytes = 8bytes, offs256=0, rtotal= 73482288bytes
VRAM: cudaMalloc((void**) &dev_t_funct_cache, 1966081x 4bytes = 7864324bytes, offs256=0, rtotal= 81346612bytes
Thread call stack limit is: 1k
Cuda Thread Limit was adjusted to 10k
boinc_exit(): requesting safe worker shutdown ->
Worker Acknowledging exit request, spinning-> boinc_exit(): received safe worker shutdown acknowledge ->
--- End quote ---
changed it back to 2 at a time and the task picked up and looks like it will complete successfully
MSI was reading 925 MiB with the 3rd task running (or trying to) & Boinc reports my card as having 993MB
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