Posts by Corsair

1) Message boards : Number crunching : Optimizing the apps (Message 1198)
Posted 24 Oct 2018 by Corsair
Post:
Hi Nedmanjo thanks a lot,

I missed in the app:

<gpu_versions>
...
...
</gpu_versions>

now is running fine but no time improvement at all WU are crunched in twice the time of one WU crunched alone. :-(

maybe will need some more tweak in the app configurations parameters.
2) Message boards : Number crunching : Optimizing the apps (Message 1196)
Posted 23 Oct 2018 by Corsair
Post:
I have a NVidia 1070 Ti with AMD Ryzen 7 1800x, windows 10 x64 ver 1809 (17763.55), Crunching correctly no problem and with optimisation of the app:

X:\ProgramData\BOINC\projects\boinc.thesonntags.com_collatz
in
collatz_sieve_1.30_windows_x86_64__opencl_nvidia_gpu.config
as:
verbose=1
kernels_per_reduction=48
threads=9
lut_size=17
sieve_size=30
cache_sieve=1
sleep=1


and from being doing a WU in 13 minutes with such parameters I'm doing in 6.x minutes, good improvement!

I want to run two WU in the same video card, and I've done before, but now I don't know why is not working.

I'm using too in:
X:\ProgramData\BOINC\projects\boinc.thesonntags.com_collatz
in
app_config.xml
as:

<app_config>
<app>
<name>collatz_sieve</name>
<max_concurrent>2</max_concurrent>
<gpu_gpu_usage>0.500000</gpu_gpu_usage>
<gpu_cpu_usage>0.250000</gpu_cpu_usage>
<fraction_done_exact>0</fraction_done_exact>
<report_results_immediately>1</report_results_immediately>
</app>
<project_max_concurrent>0</project_max_concurrent>
<report_results_immediately>0</report_results_immediately>
</app_config>


but no success, no way of crunching two WU at the same time.

I also tried the old method of:

<app_config>
<app>
<name>collatz_sieve</name>
<max_concurrent>2</max_concurrent>
<gpu_usage>0.50</gpu_usage>
<cpu_usage>0.25</cpu_usage>
</app>
</app_config>


and also no success, what I'n doing wrong??
3) Message boards : Number crunching : Optimizing the apps (Message 1119)
Posted 4 Oct 2018 by Corsair
Post:
Any hint about new NVIDIA driver 416.16 & win 10 pro x64 ver 1809-17763.1??

previously I had to uninstall new NVidia driver with optimisation for GTX 1060 as:
verbose=0
kernels_per_reduction=48
threads=10
lut_size=17
sieve_size=30
sleep=1
cache_sieve=1
reduce_CPU=0
because the app was broken just after 5 seconds running and all results were error, I just rename the config file and the app was running smoothly but the running time was double than optimised so I had to come back to previous driver.

now I have updated the o.s. to redstone 5 (October 18 update) and again all results end in error after 5 seconds so I had to delete the config file and restart the project and now is working again, but at double time than before.

so is there any update to work with redstone 5 & latest NVidia driver with optimisation for collatz??




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