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Title: Extra flag to exclude core when CPU mining Post by: maplemath on December 18, 2013, 06:03:40 AM When CPU mining alternative coins, what flag do I need to pass to cgminer to use all but one core? I want to avoid using all cores because it would affect my GPU scrypt hash rate. (I'd like to use the CPU to mine a CPU-friendly coin, which is different from what I mine with the GPUs.)
Title: Re: Extra flag to exclude core when CPU mining Post by: Mortimer452 on December 18, 2013, 06:09:15 AM I don't believe there is an option to specify number of course (but I could be mistaken)
However, putting cgminer on low CPU priority works well for me (assuming you are using Windows): 1. Start cgminer 2. Open Windows Task Manager 3. Switch to the "Processes" tab 4. Find the cgminer.exe process related to your CPU mining 5. Right-click this process, choose Set Priority -> Low This will allow this instance of cgminer to use 100% of CPU resources, but allows other tasks to "steal" CPU time if needed Title: Re: Extra flag to exclude core when CPU mining Post by: drknife on December 18, 2013, 06:18:01 AM Don't use cgminer. Use pooler's cpuminer aka minerd.
Here is original thread. https://bitcointalk.org/index.php?topic=55038.0 There are probably more up to date releases but without knowing your OS I don't want to go searching. In miners you can use the -t call to specify the number of threads. So if you have 4 cores you could do "-t 3" and have only 3 threads. This does not leave an entire core open but it should have all four cores at ~75% usage. At least that is my experience. Title: Re: Extra flag to exclude core when CPU mining Post by: eon89 on December 18, 2013, 06:19:22 AM -t #
# being the number of cores you want to use. Title: Re: Extra flag to exclude core when CPU mining Post by: drknife on December 18, 2013, 07:23:24 AM -t # # being the number of cores you want to use. This does not work for cgminer. At least for the cgminer I have used. |