Message boards :
Number crunching :
Varying GPU time per task
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Send message Joined: 25 Feb 16 Posts: 2 Credit: 211,868,052 RAC: 0 |
I've noticed for a while now that the time projects take to complete seems to vary over time somewhat unpredictably. When it's good, I'm crunching a task every ~65 seconds but this past week, for example, I've been closer to 180-350 seconds. I've been seeing my RAC dive from about 110k to about 60k now. Just want to know if this is normal or if it's something I might want to look into. I've performed plenty of BOINC resets, computer shutdowns, and graphics card updates to feel confident none of those is an issue. |
Send message Joined: 8 May 09 Posts: 3319 Credit: 520,292,789 RAC: 19,984 |
I've noticed for a while now that the time projects take to complete seems to vary over time somewhat unpredictably. When it's good, I'm crunching a task every ~65 seconds but this past week, for example, I've been closer to 180-350 seconds. I've been seeing my RAC dive from about 110k to about 60k now. Just want to know if this is normal or if it's something I might want to look into. I've performed plenty of BOINC resets, computer shutdowns, and graphics card updates to feel confident none of those is an issue. One thing is you are doing different tasks right now and the new tasks are taking twice as long as the old ones. |
Send message Joined: 25 Feb 16 Posts: 2 Credit: 211,868,052 RAC: 0 |
Are you saying all hosts should be taking longer to process tasks? Is there somewhere where this info is posted? |
Send message Joined: 8 May 09 Posts: 3319 Credit: 520,292,789 RAC: 19,984 |
Are you saying all hosts should be taking longer to process tasks? Is there somewhere where this info is posted? I have no clue if they announced it Officially or not, they did say new units are here, don't know where I saw that now though, and they just take longer than the previous ones. |
Send message Joined: 30 Oct 09 Posts: 6 Credit: 7,223,563,561 RAC: 23 |
Hi Oinkers and all others with the same problem. It might be due to the inefficient throttling of the actaul GPU frequency under heavy load. At least for AMD Tahiti GPUs GPU-Z show only the set value, not the acual value. Use i.e. HWinfo (https://www.hwinfo.com/download.php) to show the actual running frequency. My expirence is that the WU time is always about the same as long as is GPU frequency is constant, only one WU is run at a time on each GPU and the CPU is not overloaded with other tasks. |
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