DistrRTgen app_info file

[zombie67]

How much does it improve performance?

[Maxwell]

How much does it improve performance?

I didn't get much of a baseline in terms of credits (pending, impatience, etc). But I'm watching the GPU load. Running one at a time, the typical load was about 50% - now it's >95%. Completion times have not noticeably increased, either. I'll post my credit total at the end of the day.

[zombie67]

I only have a handful of tasks validated so far, but this is what I found:

GTX 580:
o Normal: Run time averaged 70 seconds and pay averaged 51. That works out to about 63,330/day.
o With app_info: Run time averaged 133 seconds and pay averaged 61. That works out to about 78,865/day.

GTX 295:
o Normal: Run time averaged 352 seconds and pay averaged 1231. That works out to about 30,234/day.
o With app_info: Run time averaged 524 seconds and pay averaged 61. That works out to about 40.057/day.

The odd bit is around the credits awarded. Normally, they vary between 48 to 54 per task on the 580. But with the app_info, they are all awarded the exact same 60.74 credits. Similar situation with the 295, all exactly 60.74.

[Maxwell]

That's really interesting - I am not seeing the same behavior. I'm seeing huge variation in the number of credits awarded, from ~40 to ~142, with an average of 60.79 (damn close to your fixed value).

Since you did it, I went in and calculated numbers, and I'm seeing a similar gain. My number of normal WUs is fairly small, but I was getting 48k/day on a 570 normal, and 59k/day with the app_info file.

[zombie67]

Just curious, why did you pick .75 CPU per? With my GTX 295, that is taking 3 of my 4 CPUs...not leaving much for crunching. Can this be lowered at all, without impacting the performance? Anyone feel like doing some experiments?

[Maxwell]

I used 0.75 because the default was 0.85, and 0.75 seemed rounder - completely arbitrary, but I wanted to stick close.

For the record: At exactly 06:00 UTC 27 March 2011, I changed it over to 0.25. Anything reported after that time has the new app_info system...

[zombie67]

I used 0.75 because the default was 0.85, and 0.75 seemed rounder - completely arbitrary, but I wanted to stick close.

For the record: At exactly 06:00 UTC 27 March 2011, I changed it over to 0.25. Anything reported after that time has the new app_info system...

I think the "default" is based on the stats of the GPU. The faster the GPU, the higher the percentage of CPU required (to keep up, I assume). For example, the default of my 295 is .69, and for my 9500GT PCI is .27.