cpu-cores | 易学教程

Limit number of cores used in Keras

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问题 I have a shared machine with 64 cores on which I have a big pipeline of Keras functions that I want to run. The thing is that it seems that Keras automatically uses all the cores available and I can't do that. I use Python and I want to run 67 neural networks in a for loop. I would like to use half of the available cores. I can't find any way of limiting the number of cores in Keras... Do you have any clue? 回答1: As @Yu-Yang suggested, I used this line before each fit I do : from keras import

Python multiprocessing's Pool process limit

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问题 In using the Pool object from the multiprocessing module, is the number of processes limited by the number of CPU cores? E.g. if I have 4 cores, even if I create a Pool with 8 processes, only 4 will be running at one time? 回答1: You can ask for as many processes as you like. Any limit that may exist will be imposed by your operating system, not by multiprocessing . For example, p = multiprocessing.Pool(1000000) is likely to suffer an ugly death on any machine. I'm trying it on my box as I type

ARM: Start/Wakeup/Bringup the other CPU cores/APs and pass execution start address?

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问题 I've been banging my head with this for the last 3-4 days and I can't find a DECENT explanatory documentation (from ARM or unofficial) to help me. I've got an ODROID-XU board (big.LITTLE 2 x Cortex-A15 + 2 x Cortex-A7) board and I'm trying to understand a bit more about the ARM architecture. In my "experimenting" code I've now arrived at the stage where I want to WAKE UP THE OTHER CORES FROM THEIR WFI (wait-for-interrupt) state. The missing information I'm still trying to find is: 1. When

Java threads and number of cores

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问题 I just had a quick question on how processors and threads work. According to my current understanding, a core can only perform 1 process at a time. But we are able to produce a thread pool(lets say 30) with a larger number than the number of cores that we posses(lets say 4) and have them run concurrently. How is this possible if we are only have 4 cores? I am also able to run my 30 thread program on my local computer and also continue to perform other activities on my computer such as watch

Java: How to scale threads according to cpu cores?

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I'm not a good java programmer, it's just my hobby, but I'm eager to know more than average stuff. I want to solve a mathematical problem with multiple threads in java. my math problem can be separated into work units, that I want to have solved in several threads. but I don't want to have a fixed amount of threads working on it, but instead a coresponding amount of threads to the amount of cpu cores. and my problem is, that I couldn't find an easy tutorial in the internet for this. all I found are examples with fixed threads. So could you help me with a link to a good tuturial or could give

Java: How to scale threads according to cpu cores?

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问题 I\'m not a good java programmer, it\'s just my hobby, but I\'m eager to know more than average stuff. I want to solve a mathematical problem with multiple threads in java. my math problem can be separated into work units, that I want to have solved in several threads. but I don\'t want to have a fixed amount of threads working on it, but instead a coresponding amount of threads to the amount of cpu cores. and my problem is, that I couldn\'t find an easy tutorial in the internet for this. all

How to find the Number of CPU Cores via .NET/C#?

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问题 Is there a way via .NET/C# to find out the number of CPU cores? PS This is a straight code question, not a \"Should I use multi-threading?\" question! :-) 回答1: There are several different pieces of information relating to processors that you could get: Number of physical processors Number of cores Number of logical processors. These can all be different; in the case of a machine with 2 dual-core hyper-threading-enabled processors, there are 2 physical processors, 4 cores, and 8 logical