System says: "Running 0,02 CPUs, 1 CUDA"

Questions and Answers : GPU applications : System says: "Running 0,02 CPUs, 1 CUDA"
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Author	Message
Kosh Send message Joined: 31 May 99 Posts: 11 Credit: 968,748 RAC: 0	Message 903542 - Posted: 4 Jun 2009, 10:42:30 UTC Well... Im new in CUDA projects so, i just like to know exactly the meaning of the expression "Running 0,02 CPUs, 1 CUDA" The question is especificaly about the menaing of these "0,02"... BTW, how to enable CUDA in the other projects against cancer, couse i have noted that runs just on CPU (slower then CUDA). Thx! ID: 903542 ·
Jord Volunteer tester Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3	Message 903552 - Posted: 4 Jun 2009, 11:17:22 UTC - in response to Message 903542.   Well... Im new in CUDA projects so, i just like to know exactly the meaning of the expression "Running 0,02 CPUs, 1 CUDA" The question is especificaly about the menaing of these "0,02"... 0.02 means that it's using 2% of the CPU cycles to transfer the data to and from the videocard's memory, so the GPU can run it. BTW, how to enable CUDA in the other projects against cancer, couse i have noted that runs just on CPU (slower then CUDA). They may not have a CUDA application. You'll have to ask about that on the project itself, it isn't affiliated to Seti in any bit. ID: 903552 ·
Kosh Send message Joined: 31 May 99 Posts: 11 Credit: 968,748 RAC: 0	Message 903589 - Posted: 4 Jun 2009, 14:00:25 UTC - in response to Message 903552.   "0.02 means that it's using 2% of the CPU cycles to transfer the data to and from the videocard's memory, so the GPU can run it. " Just 2% ? So, that means ... if that percentual increases the work can be done faster? If so, is it possible to increse it? Thx! ID: 903589 ·
perryjay Volunteer tester Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0	Message 903616 - Posted: 4 Jun 2009, 15:27:25 UTC - in response to Message 903589.   That 0.02 is just the percent of the CPU needed to prepare the task for the GPU. Increasing it will have little or no effect on how fast the task gets done. PROUD MEMBER OF Team Starfire World BOINC ID: 903616 ·
Jord Volunteer tester Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3	Message 903617 - Posted: 4 Jun 2009, 15:29:00 UTC - in response to Message 903589.   The CPU doesn't crunch that work, the GPU does. All that the CPU does is transfer the data about the task from physical memory to video memory and back. The GPU is completely saturated with the task being done. So no, it won't make the work being done faster if you manage to increase the CPU percentage. Only a better videocard and better PCI-e slot bus combination will do that. ID: 903617 ·

 
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