GPU vs GPU+CPU

Author	Message
Maxim _Nazaruk Send message Joined: 10 Apr 20 Posts: 2 Credit: 43,129,981 RAC: 0	Message 69685 - Posted: 11 Apr 2020, 8:07:30 UTC Hello. I've limited WUs to GPU only and it seems GPU gets less load compared to GPU+CPU mode. Besides, GPU only WUs need much longer time to be crunched comparing to GPU+CPU mode. Does it ruin performance running GPU only mode? Is CPU essential for crunching WUs? GPUs are AMD Vega 56 + RX 480. CPU i5-4670 Thanks. ID: 69685 · Rating: 0 · rate: / Reply Quote

mikey Send message Joined: 8 May 09 Posts: 2821 Credit: 463,358,740 RAC: 10,687	Message 69686 - Posted: 11 Apr 2020, 10:00:32 UTC - in response to Message 69685. Hello. I've limited WUs to GPU only and it seems GPU gets less load compared to GPU+CPU mode. Besides, GPU only WUs need much longer time to be crunched comparing to GPU+CPU mode. Does it ruin performance running GPU only mode? Is CPU essential for crunching WUs? GPUs are AMD Vega 56 + RX 480. CPU i5-4670 Thanks. It's more efficient to let the gpu use a cpu core to run the workunits, you need to keep the gpu fed and happy as it does 10 times the work giving you10 times the credit as a cpu core. The cpu and gpu workunits are doing the same thing just in different ways, so do things efficiently. ID: 69686 · Rating: 0 · rate: / Reply Quote

Maxim _Nazaruk Send message Joined: 10 Apr 20 Posts: 2 Credit: 43,129,981 RAC: 0	Message 69687 - Posted: 11 Apr 2020, 11:31:52 UTC - in response to Message 69686. Thank you for the explanation. ID: 69687 · Rating: 0 · rate: / Reply Quote

mikey Send message Joined: 8 May 09 Posts: 2821 Credit: 463,358,740 RAC: 10,687	Message 69688 - Posted: 12 Apr 2020, 2:40:52 UTC - in response to Message 69687. Thank you for the explanation. You are very welcome. Happy crunching. ID: 69688 · Rating: 0 · rate: / Reply Quote