Message boards :
Number crunching :
-LotOfMem Switch, what's it for?
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CryptokiD ![]() Send message Joined: 2 Dec 00 Posts: 150 Credit: 3,216,632 RAC: 0 ![]() |
In the stderr output of a few ATI multibeam applications I see a reference to -LotOfMem used. Here is an example from this host: https://setiathome.berkeley.edu/result.php?resultid=8170505486 Used GPU device parameters are: Number of compute units: 5 Single buffer allocation size: 128MB Total device global memory: 2047MB max WG size: 256 local mem type: Real LotOfMem path: yes LowPerformanceGPU path: no HighPerformanceGPU path: no period_iterations_num=50 I did search the forums and duckduckgo but I did not find the answers I seek, I'd like to know the details of what it does, why it's there, and maybe some example situations of when to use and not use it. Why it isn't documented in the readme's that Come with the relevant applications? |
![]() ![]() ![]() Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 ![]() ![]() |
That is just an internal flag the science application uses to determine how to set up the card to crunch the FFT array. Nothing you have any control over. Seti@Home classic workunits:20,676 CPU time:74,226 hours ![]() ![]() A proud member of the OFA (Old Farts Association) |
CryptokiD ![]() Send message Joined: 2 Dec 00 Posts: 150 Credit: 3,216,632 RAC: 0 ![]() |
if i put -lotofmem in the options file it changes lot of mem to yes in the stderr. am i under illusion because i never see lotofmem with a yes on my setup before now? |
![]() ![]() ![]() Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873 ![]() ![]() |
if i put -lotofmem in the options file it changes lot of mem to yes in the stderr. am i under illusion because i never see lotofmem with a yes on my setup before now? You'll have to ask Raistmer, the developer whether that is a real user settable option parameter. I have never seen it documented anywhere. Surprised setting that option didn't cause a config error complaint in the Event Log. Seti@Home classic workunits:20,676 CPU time:74,226 hours ![]() ![]() A proud member of the OFA (Old Farts Association) |
![]() ![]() ![]() Send message Joined: 17 Feb 01 Posts: 34423 Credit: 79,922,639 RAC: 80 ![]() ![]() |
Memory does not process any tasks. It is just an information. It is only helpful in conjunction with other flags like high perf for example. But not usable for iGPU. With each crime and every kindness we birth our future. |
CryptokiD ![]() Send message Joined: 2 Dec 00 Posts: 150 Credit: 3,216,632 RAC: 0 ![]() |
Hope Rasty sees this. Meanwhile, Would you happen to have any more info on it such as what it is suppose to output when enabled? Perhaps an example of what it is used for would be great if that isn't asking too much of you. |
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