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drummers-lowrise
1) Message boards : Number crunching : cudaPPSsieve 1.42 high CPU usage (Message 149582)
Posted 53 days ago by _heinz
I run 1.42 (cudaPPSsieve) on my 3 Titans, but the app takes all my CPU cycles of 8 Cores of the XEON, it shows CPU usage=100%.
I let run 4 at once per GPU, so I got 95-98% usage of the GPU's.
The high usage of CPU=100% is not normal. With the old app 1.39 cudaPPSsieve I had never seen such values.
Please can you take a look at my machine V8-Xeon
V8-Xeon_results
What must I do to reduce CPU-Usage to max 20%

my app_config looks like this:
------------------------------
<app_config>
<app>
<name>pps_sr2sieve</name>
<fraction_done_exact/>
<max_concurrent>50</max_concurrent>
<plan_class>cudaPPSsieve</plan_class>
<gpu_versions>
<gpu_usage>0.25</gpu_usage>
<cpu_usage>0.04</cpu_usage>
</gpu_versions>
</app>
</app_config>
----------------------------------------------------
here you see usage, temps and all other important values
V8Xeon_working
-----------------------------------------------------
thanks _heinz
2) Message boards : Number crunching : Sophie Germain's Birthday Challenge (Message 139322)
Posted 406 days ago by _heinz
My old V8-Xeon works with 16 Tasks at once. CPUs are cool with 45 grd C
See me not in statistic till now
regards to all
_heinz
3) Message boards : Number crunching : pps sieve running 5 at once (Message 102788)
Posted 1597 days ago by _heinz
if I run five wu's per gpu on my 3 Titans with appinfo or appconfig BOINC 7.6.33 Shows:
GPU0 5 wu's
GPU1 5 wu's
GPU2 4 wu's
It runs on the last GPU allways 4 not 5 wu's Independent if I use appconfig or appinfo. Have no idea why.
<app_config>
<app>
<name>pps_sr2sieve</name>
<max_concurrent>70</max_concurrent>
<gpu_versions>
<gpu_usage>0.2</gpu_usage>
<cpu_usage>0.02</cpu_usage>
</gpu_versions>
</app>
</app_config>

or appinfo

app_info>
<app>
<name>pps_sr2sieve</name>
<user_friendly_name>Proth Prime Search (Sieve)</user_friendly_name>
</app>
<file_info>
<name>primegrid_tpsieve_1.39_windows_intelx86__cuda23.exe</name>
<executable/>
</file_info>
<file_info>
<name>cudart.dll</name>
</file_info>
<app_version>
<app_name>pps_sr2sieve</app_name>
<version_num>139</version_num>
<platform>windows_intelx86</platform>
<plan_class>cuda50</plan_class>
<avg_ncpus>0.04</avg_ncpus>
<max_ncpus>1.00</max_ncpus>
<flops>1.5e11</flops>
<coproc>
<type>CUDA</type>
<count>0.2</count>
</coproc>
<cmdline>L13 I8 S0</cmdline>
<file_ref>
<file_name>primegrid_tpsieve_1.39_windows_intelx86__cuda23.exe</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>cudart.dll</file_name>
</file_ref>
</app_version>
</app_info>
4) Message boards : Number crunching : genefer17mega curiosity (Message 102786)
Posted 1597 days ago by _heinz
Today I started genefer17mega on my 3 Titans without any appconfig or appinfo. The app started on all 3 Titans but run still on gpu0 and gpu1, on gpu3 it hang around and does nothing, later the app changed automatic the gpu and at least it run on gpu0, here you can have a look on the result
resultid=763669663

plese have a look at my host
hostid=374589
5) Message boards : Number crunching : Winter Solstice Challenge (Message 102389)
Posted 1607 days ago by _heinz
uhhh. have not enough work for V8-Xeon. :-(

got still 6 wu's
18.12.2016 13:03:35 | PrimeGrid | This computer has reached a limit on tasks in progress

Win10 killed my machine during the contest. Had to install driver again with several new starts. Installing EVGA Precision again and so on. Lost 2 hours today.
:-(
6) Message boards : Number crunching : Winter Solstice Challenge (Message 102368)
Posted 1607 days ago by _heinz
uhhh. have not enough work for V8-Xeon. :-(

got still 6 wu's
18.12.2016 13:03:35 | PrimeGrid | This computer has reached a limit on tasks in progress
7) Message boards : Number crunching : Winter Solstice Challenge (Message 102363)
Posted 1607 days ago by _heinz
uhhh. have not enough work for V8-Xeon. :-(
8) Message boards : Number crunching : Winter Solstice Challenge (Message 102345)
Posted 1608 days ago by _heinz
Intel Atom NVIDIA ION (256MB) driver: 34052
65,894.21 sec/wu
hostid=173620
surely the slowest GPU, but it does it.
9) Message boards : Number crunching : Winter Solstice Challenge (Message 102338)
Posted 1608 days ago by _heinz
EVGA Titan SC GK110 @1250MHz four at once: 1,174.71 sec /4 = 293,6 sec
10) Message boards : Number crunching : Winter Solstice Challenge (Message 102336)
Posted 1608 days ago by _heinz
Tried this on my i3 Laptop GT540M, it worked 4 on cpu,1 on GPU

<app_config>
<app>
<name>pps_sr2sieve</name>
<fraction_done_exact/>
</app>
<app_version>
<app_name>pps_sr2sieve</app_name>
<plan_class>cudaPPSsieve</plan_class>
<avg_ncpus>.01</avg_ncpus>
<ngpus>1.0</ngpus>
</app_version>
<app_version>
<app_name>pps_sr2sieve</app_name>
<plan_class>cpuPPSsieve</plan_class>
<avg_ncpus>1</avg_ncpus>
</app_version>
</app_config>

comment: ist not recommended to run sieve on CPU, Duration ca. 2 days/wu


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