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Author Topic: MINING with both GPU and the CPU on the same PC. DUAL MINING!!!  (Read 400 times)
adaseb
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September 30, 2019, 04:07:54 AM
 #21

In the past whenever I did separate CPU and GPU mining I had to configure it to use all the cores except one. Basically if you try and mine with all cores on the CPU, your GPU speeds will slowdown.

So if you got a 4 core CPU, you need to configure it to mine with 3 cores and leave the last one unused, the last one will be used for the GPU mining. Most GPU miners don't need a lot of CPU resources however if all CPU cores are using 99% usage then the GPU miner will lag from time to time and you will get a slower speed.

joblo
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September 30, 2019, 05:05:47 AM
 #22

The problem can be virtually eliminated by running the cpuminer at a lower priority than the
GPU miner. When the GPU's CPU support thread needs to run it will immediately preempt a
cpuminer thread. Other than a dirty cache it's the same as if the CPU had been idle.

Running the cpuminer at a lower prio will also prevent it from competing with other processes
running at the default prio.

AKA JayDDee, cpuminer-opt developer. https://github.com/JayDDee/cpuminer-opt
https://bitcointalk.org/index.php?topic=5226770.msg53865575#msg53865575
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
mineshop.eu
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September 30, 2019, 08:22:23 PM
 #23

Best bet mining Randomx is with Ryzen 9 and then add gpus best performance for your other preferable coin to mine.
We have this dual miner , check components we use https://mineshop.eu/monero-xmr-miners/monero-dual-miner-randomx/

sxemini
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October 01, 2019, 01:36:40 PM
 #24

In the past whenever I did separate CPU and GPU mining I had to configure it to use all the cores except one. Basically if you try and mine with all cores on the CPU, your GPU speeds will slowdown.

So if you got a 4 core CPU, you need to configure it to mine with 3 cores and leave the last one unused, the last one will be used for the GPU mining. Most GPU miners don't need a lot of CPU resources however if all CPU cores are using 99% usage then the GPU miner will lag from time to time and you will get a slower speed.

Sorry this is wrong. We mining with all cores on our rigs (Intel G3900) and the gpu´s didn´t slow down.
Kodaman (OP)
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October 02, 2019, 06:37:45 AM
 #25

The problem can be virtually eliminated by running the cpuminer at a lower priority than the
GPU miner. When the GPU's CPU support thread needs to run it will immediately preempt a
cpuminer thread. Other than a dirty cache it's the same as if the CPU had been idle.

Running the cpuminer at a lower prio will also prevent it from competing with other processes
running at the default prio.
I will try this definitely because it sounds like a great idea!
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